Editing PS2 Emulation

==Description==
[[File:Ps2_block_diagram.png|200px|thumb|right|Simplified block diagram of a PS2<br />[http://www.philvaz.com/games/PS2.htm source]]]
Emulation of Playstation 2 is currently handled by 3 kind of emulators. CECH-A/B models use ps2_emu.self able to use built-in PS2 hardware (EE/GS/Rambus memory), and have best compatibility. CECH-C/E use ps2_gxemu, this emulator use physical Graphic Synthesizer found in this ps3 model, but Emotion Engine is fully emulated here, also there is no Rambus memory. All other models emulate PS2 thru fully software based ps2_netemu used for ps2 classics, and hacked now to use decrypted ISO files. Earlier before Sony provided ps2 classics on PS Store there was another soft only emulator strongly based on ps2_gxemu. It was called ps2_softemu, and had support for original PS2 CDVD. Only emulator not able to run physical discs is ps2_netemu. 

Emulators are self files, but not typical one. Emulators are not truly PS3 Game OS elf executables, but Guest OS'es running on LV1 of PS3. This mean that LV2, or more friendly Game OS is unloaded before emulator is loaded. This also mean that while emulators are running we can't call any LV2 function. Also LV1 syscalls are limited to call from all emulators, but can be fully unlocked. 

All emulators use built-in stripped developement version of PS2 BIOS with disabled debug functions that can affect some games. This is done because some games print debug info on screen when found that are run on dev bios. Bios between ps2_emu, and ps2_gxemu/ps2_netemu are different. Ps2_emu BIOS is able to run only on ps2emu version of emulator due to RDRAM check.

PS3 models without Emotion Engine unit use "SPE-compatible SIMD graphics-rounding mode for VMX/Altivec Instructions" for FPU, and VU0 emulated floats calculations. This is set on emulator init by HV call 97 with param 1. VU1 actually run at SPE core so no compatibility mode need (or can) to be set. SPE compatible mode for PPE mean that rounding mode is set as round to zero, denormals are treated as zero, and there are no infinities or NaNs. So literally what PS2 VU was originally. Although SPE, and PPE SPE compatibility mode can still be inaccurate comparing to PS2. Good example here are TriAce games, or Castlevania COD where SPE calculation is wrong by 1 bit making games unplayable without patch. This is due to some PS2 math algo specific inaccuracies in FPU/VU implementation that are not present on any other hardware.

Note: 
* not available in early Tool/DECR and Debug/DEX firmwares. But available in AV TOOL firmware since 1.00
* Emulation is based on a SCPH-50000/SCPH-20401 Playstation 2 Model.
* [http://unina.stidue.net/Universita'%20di%20Trieste/Ingegneria%20Industriale%20e%20dell'Informazione/Tuzzi/Architetture_Avanzate_dei_Calcolatori/Emotion_2.pdf Introduction to PlayStation2 Architecture.pdf]
* ps2tek docs - https://psi-rockin.github.io/ps2tek/

==PS2 emulators workload comparison==
{{PS2 emulators workload comparison}}

==PS2 Emulators types and versions==
{| cellspacing="0" cellpadding="2" border="1" class="wikitable" style="text-align: center;"
|-
! colspan="4" | PS2_EMU
|-
! FW version !! TOC !!  Notes
|-
| 1.00 AV || 0x7C3150 ||
|-
| 1.02 || 0x7C31F0 ||
|-
| 1.10 || 0x7C2168 ||
|-
| 1.11 || 0x7C23C8 ||
|-
| 1.30 || 0x8442E8 ||
|-
| 1.30 AV || 0x8442E8 ||
|-
| 1.31 || 0x844C98 ||
|-
| 1.32 || 0x845CA0 ||
|-
| 1.50 || 0x848728 ||
|-
| 1.90 || 0x4D7ED8 ||
|-
| 3.66 - 3.74 || 0x4E9A20 ||
|-
| 4.00 - 4.01 || 0x4EADB8 ||
|-
| 4.10 - 4.11 || 0x4EAD28 ||
|-
| 4.20 - 4.21 || 0x4EAE30 ||
|-
| 4.23 || 0x4EACE0 ||
|-
| 4.25 || 0x4EAE30 || Reverted to 4.20 - 4.21 version?
|-
| 4.78 - 4.82 || 0x4EB8C0 ||
|-
! colspan="4" | PS2_GXEMU
|-
! FW version !! TOC !!  Notes
|-
| 1.50 || 0x5BDFC8 ||
|-
| 1.90 || 0x666C78 ||
|-
| 3.66 - 3.74 || 0x6766B8 ||
|-
| 4.00 - 4.11 || 0x677990 ||
|-
| 3.66 - 3.74 || 0x677AA8 ||
|-
| 4.78 - 4.82 || 0x678548 || 
|-
! colspan="4" | PS2_SOFTEMU
|-
! FW version !! TOC !!  Notes
|-
| 1.90 || 0x5C7B10 ||
|-
| 2.50 || 0x5C7ED8 ||
|-
| 3.41 || 0x5C8C00 || 
|-
| 3.66 - 3.71 || 0x5C8EC0 ||
|-
| 3.72 - 4.01 || 0x5C8E40 ||
|-
! colspan="4" | PS2_NETEMU
|-
! FW version !! TOC !!  Notes
|-
| 3.73 - 3.74 || 0x7D8B00 ||
|-
| 4.00 - 4.01 || 0x7DA200 ||
|-
| 4.10 - 4.11 || 0x7DA180 ||
|-
| 4.20 - 4.25 || 0x7DA500 ||
|-
| 4.78 - 4.83 || 0x751280 || 
|-
|}

==General observations regarding PS2 Classics emulator (ps2_netemu)==
* Virtual memory cards are per title based, but apparently run through the current memory card system. The module used to manage memory cards is: vmc_savedata_plugin.sprx - Using a regular memory card that has been renamed result in a "The save data is corrupt (8XXXXXXX) error"
* Loads an epilepsy warning before PS2 logo (PS button menu appears during epilepsy warning if controller is synced)
* Does not support online functionality of PS2 titles (network configuration utility inside Full Spectrum Warrior claims no network adaptor has been found, same with Syphon Filter: The Omega Strain).

- Only file that is needed in the folder for PS2 Classics is "iso.bin.enc". Removing the manuals/DXT files will cause the game to boot IMMEDIATELY to the PS2 logo upon switching to 720p/starting PS2 LPAR.

===LIMG Segment===
The ISO.BIN.ENC have a block of 0x4000 bytes added at the end codenamed "LIMG" that works as a descriptor of the ISO structure

{| class="wikitable"
|-
! Offset !! Lenght !! Name !! Example !! Description
|-
| 0x00 || 0x4 || '''magic''' || LIMG || 
|-
| 0x04 || 0x4 || '''volume_type''' || 0x00000001 || 1=DVD<br>2=CD
|-
| 0x08 || 0x4 || '''sector_count''' || 0x00279890 || sector_count = img_size / sector_size
|-
| 0x0C || 0x4 || '''sector_size''' || 0x0000800 || 0x800=DVD (Mode1/2048)<br>0x930=CD (Mode2/2352)
|-
| 0x10 || 0x3FF0 || ''padding'' || 0x00000000... || 
|}

===folder/file layout===
(in this example GTA San Andreas Classic)
<pre>
[NPUD20946]
       [USRDIR]
             [CONTENT]
                    001.dxt
                    002.dxt
                    003.dxt
                    004.dxt
                    005.dxt
                    006.dxt
                    007.dxt
                    008.dxt
                    009.dxt
                    010.dxt
                    011.dxt
                    012.dxt
                    013.dxt
                    014.dxt
                    015.dxt
                    016.dxt
                    017.dxt
                    Others.dxt
                    Manual.idx
             [SAVEDATA]
                    SCEVMC0.VME
                    SCEVMC1.VME
             CONFIG
             ISO.BIN.EDAT
             ISO.BIN.ENC
       PS3LOGO.DAT
       PARAM.SFO
       ICON0.PNG
       PIC0.PNG
       PIC1.PNG
       PIC2.PNG
</pre>

==Virtual PS2 (emulated machine) usage and features==

===Video Modes===
'''Note:''' Real PS2 : http://users.neoscientists.org/~blue/ps2videomodes.txt

 Video Modes
 ----.-----------.---------------.-----------.-----------.
  No | Name      | Resolution	| fV(Hz)    | fH(kHz)   |
 ----+-----------+---------------+-----------+-----------|
   0 | NTSC-NI   |  640x240(224) | 59.940    | 15.734    |
   1 | NTSC-I    |  640x480(448) | 59.820    | 15.734    |
   2 | PAL-NI    |  640x288(256) | 50.000    | 15.625    |
   3 | PAL-I     |  640x576(512) | 49.760    | 15.625    |
   4 | VESA-1A   |  640x480      | 59.940    | 31.469    |
   5 | VESA-1C   |  640x480      | 75.000    | 37.500    |
   6 | VESA-2B   |  800x600      | 60.317    | 37.879    |
   7 | VESA-2D   |  800x600      | 75.000    | 46.875    |
   8 | VESA-3B   | 1024x768      | 60.004    | 48.363    |
   9 | VESA-3D   | 1024x768      | 75.029    | 60.023    |
  10 | VESA-4A   | 1280x1024     | 60.020    | 63.981    |
  11 | VESA-4B   | 1280x1024     | 75.025    | 79.976    |
  12 | DTV-480P  |  720x480      | 59.940    | 31.469    |
  13 | DTV-1080I | 1920x1080     | 60.000    | 33.750    |
  14 | DTV-720P  | 1280x720      | ??        | ??        |
 ----^-----------^---------------^-----------^-----------'

==Memory Mapping==

=== ps2netemu === 
 Mapping ELF @ 0x200000000

{| class="wikitable"
|-
! Name !! ea !! lpar2(netemu 4.81) !! size !! flags !! lpar1(lv1 4.81)
|-
| text          ||          0x0 ||      0x3D00000 ||  0x300000(  3 MB) || 0x8000000000000003  0000000000000003 || 0x7D00000
|-                                                                                                                  
| ro_work       ||     0x300000 ||       0x300000 ||  0x500000(  5 MB) || 0x0000000000000003  0000000000000003 || 0x4300000
|-                                                                                                                  
| rw_work       ||     0x800000 ||       0x800000 || 0x2A00000( 42 MB) || 0x0000000000000001  0000000000000003 || 0x4800000
|-                                                                                                                  
| negmem        ||   0x1FFF0000 ||      0x3210000 ||   0x10000( 64 KB) || 0x0000000000000001  0000000000000000 || 0x7210000
|-                                                                                                                  
| ee_ram        ||  0x100000000 || 0x64000E000000 || 0x2000000( 32 MB) || 0x0000000000000001  0000000000000000 || 0x3C00000 - 0x3F00000, 0x8000000 - 0x9B00000
|-                                                                                                                  
| ee_jit_code   ||  0xD00000000 || 0x680024000000 || 0x3000000( 48 MB) || 0x8000000000000001  0000000000000003 || 0xBC00000 - 0xEB00000
|-                                                                                                                  
| vu0_jit_code  ||  0xD08000000 || 0x580000800000 ||  0x400000(  4 MB) || 0x8000000000000001  0000000000000003 || 0x900000 - 0xC00000
|-                                                                                                                  
| vu0_jit_data  ||  0xD0C000000 ||      0x3700000 ||  0x400000(  4 MB) || 0x0000000000000002  0000000000000003 || 0x7700000
|-                                                                                                                  
| eeram_jit_lut ||  0xE00000000 || 0x640010000000 || 0x2000000( 32 MB) || 0x0000000000000001  0000000000000003 || 0x9C00000 - 0xBB00000
|-                                                                                                                  
| eerom_jit_lut ||  0xE0FC00000 || 0x580000C00000 ||  0x400000(  4 MB) || 0x0000000000000001  0000000000000003 || 0xD00000 - 0x1000000
|-                                                                                                                  
| ee_dbg_ram    ||  0x90FFF8000 || 0x64000E078000 ||    0x8000( 32 KB) || 0x0000000000000001  0000000000000000 || 
|-                                                                                                                  
| iop_ram       ||  0x400000000 ||      0x3300000 ||  0x200000(  2 MB) || 0x0000000000000001  0000000000000000 || 0x7300000
|-                                                                                                                  
| iop_rom       ||  0x50FC00000 || 0x580001000000 ||  0x400000(  4 MB) || 0x0000000000000001  0000000000000002 || 0x1100000 - 0x1400000
|-                                                                                                                  
| iop_spad      ||  0x50F800000 ||      0x3220000 ||   0x10000( 64 KB) || 0x0000000000000001  0000000000000002 || 0x7220000
|-                                                                                                                  
| spu2_ram      ||  0x600000000 ||      0x3500000 ||  0x200000(  2 MB) || 0x0000000000000001  0000000000000000 || 0x7500000
|-                                                                                                                  
| spu2_ram2     ||  0x600200000 ||      0x3500000 ||  0x200000(  2 MB) || 0x0000000000000001  0000000000000000 || 0x7500000
|-                                                                                                                  
| spu2_pcm      || 0x1000000000 ||      0x3230000 ||   0x10000( 64 KB) || 0x0000000000000001  0000000000000000 || 0x7230000
|-                                                                                                                  
| ee_spr_lo     ||  0x700000000 ||      0x3201000 ||    0x2000(  8 KB) || 0x0000000000000001  0000000000000000 || 0x7201000
|-                                                                                                                  
| ee_spr        ||  0x800000000 ||      0x3203000 ||    0x6000( 24 KB) || 0x0000000000000001  0000000000000000 || 0x7203000
|-                                                                                                                  
| ee_vu0_dmem0  ||  0x301004000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                  
| ee_vu0_dmem1  ||  0x301005000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                  
| ee_vu0_dmem2  ||  0x301006000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                  
| ee_vu0_dmem3  ||  0x301007000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                  
| ee_rom        ||  0x30FC00000 || 0x580001000000 ||  0x400000(  4 MB) || 0x0000000000000001  0000000000000001 || 0x1100000 - 0x1400000
|-                                                                                                                  
| vrc           ||  0xC00000000 || 0x600005000000 || 0x1000000( 16 MB) || 0x0000000000000001  0000000000000000 || 0x1500000 - 0x2400000
|-                                                                                                                  
| /dev/zero     || 0x4000000000 ||      0x3240000 ||   0x10000( 64 KB) || 0x0000000000000001  0000000000000001 || 0x7240000
|-                                                                                                                  
| dma_vu0_dmem0 || 0x4001004000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                  
| dma_vu0_dmem1 || 0x4001005000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                  
| dma_vu0_dmem2 || 0x4001006000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                  
| dma_vu0_dmem3 || 0x4001007000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                  
| imm_vu0_dmem0 ||   0x30000000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                          
| imm_vu0_dmem1 ||   0x30001000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                          
| imm_vu0_dmem2 ||   0x30002000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                          
| imm_vu0_dmem3 ||   0x30003000 ||      0x3200000 ||    0x1000(  4 KB) || 0x0000000000000001  0000000000000001 || 0x7200000
|-                                                                                                                          
| SGSXdr        || 0x1904000000 || 0x64000C000000 || 0x1700000( 23 MB) || 0x0000000000000001  0000000000000000 || 0x2500000 - 0x3B00000
|-                                                                                                                          
| iopTrace      || 0x1400000000 ||      0x3250000 ||   0x10000( 64 KB) || 0x0000000000000001  0000000000000000 || 0x7250000
|}

===PS2 Memory and Hardware Mapped Registers Layout===
<pre>
EE Virtual/Physical Memory Map
  KUSEG: 00000000h-7FFFFFFFh User segment
  KSEG0: 80000000h-9FFFFFFFh Kernel segment 0
  KSEG1: A0000000h-BFFFFFFFh Kernel segment 1
  KSSEG: C0000000h-DFFFFFFFh Supervisor segment
  KSEG3: E0000000h-FFFFFFFFh Kernel segment 3
  
  Virtual    Physical
  00000000h  00000000h  32 MB    Main RAM (first 1 MB reserved for kernel)
  20000000h  00000000h  32 MB    Main RAM, uncached
  30100000h  00100000h  31 MB    Main RAM, uncached and accelerated
  10000000h  10000000h  64 KB    I/O registers
  11000000h  11000000h  4 KB     VU0 code memory
  11004000h  11004000h  4 KB     VU0 data memory
  11008000h  11008000h  16 KB    VU1 code memory
  1100C000h  1100C000h  16 KB    VU1 data memory
  12000000h  12000000h  8 KB     GS privileged registers
  1C000000h  1C000000h  2 MB     IOP RAM
  1FC00000h  1FC00000h  4 MB     BIOS, uncached (rom0)
  9FC00000h  1FC00000h  4 MB     BIOS, cached (rom09)
  BFC00000h  1FC00000h  4 MB     BIOS, uncached (rom0b)
  70000000h  ---------  16 KB    Scratchpad RAM (only accessible via virtual addressing)

IOP Physical Memory Map
  KUSEG: 00000000h-7FFFFFFFh User segment
  KSEG0: 80000000h-9FFFFFFFh Kernel segment 0
  KSEG1: A0000000h-BFFFFFFFh Kernel segment 1
  
  Physical
  00000000h  2 MB     Main RAM (same as on PSX)
  1D000000h           SIF registers
  1F800000h  64 KB    Various I/O registers
  1F900000h  1 KB     SPU2 registers
  1FC00000h  4 MB     BIOS (rom0) - Same as EE BIOS
  
  FFFE0000h (KSEG2)   Cache control

Additional Memory
  4 MB   GS VRAM (used for framebuffer, textures, zbuffer, etc)
  2 MB   SPU2 work RAM - quadrupled from PSX's SPU
  8 MB   Memory card


Hardware Mapped Registers
EE Map
EE Timers
  100000xxh        Timer 0
  100008xxh        Timer 1
  100010xxh        Timer 2
  100018xxh        Timer 3
Image Processing Unit (IPU)
  10002000h 8h     IPU Command
  10002010h 4h     IPU Control
  10002020h 4h     IPU bit pointer control
  10002030h 8h     Top of bitstream
  10007000h 10h    Out FIFO (read)
  10007010h 10h    In FIFO (write)
Graphics Interface (GIF)
  10003000h 4h     GIF_CTRL - Control register
  10003010h 4h     GIF_MODE - Mode setting
  10003020h 4h     GIF_STAT - Status
  10003040h 4h     GIF_TAG0 - Bits 0-31 of tag before
  10003050h 4h     GIF_TAG1 - Bits 32-63 of tag before
  10003060h 4h     GIF_TAG2 - Bits 64-95 of tag before
  10003070h 4h     GIF_TAG3 - Bits 96-127 of tag before
  10003080h 4h     GIF_CNT - Transfer status counter
  10003090h 4h     GIF_P3CNT - PATH3 transfer status counter
  100030A0h 4h     GIF_P3TAG - Bits 0-31 of PATH3 tag when interrupted
  10006000h 10h    GIF FIFO
DMA Controller (DMAC)
  100080xxh        VIF0 - channel 0
  100090xxh        VIF1 - channel 1
  1000A0xxh        GIF - channel 2
  1000B0xxh        IPU_FROM - channel 3
  1000B4xxh        IPU_TO - channel 4
  1000C0xxh        SIF0 - channel 5
  1000C4xxh        SIF1 - channel 6
  1000C8xxh        SIF2 - channel 7
  1000D0xxh        SPR_FROM - channel 8
  1000D4xxh        SPR_TO - channel 9
  1000E000h 4h     D_CTRL - DMAC control
  1000E010h 4h     D_STAT - DMAC interrupt status
  1000E020h 4h     D_PCR - DMAC priority control
  1000E030h 4h     D_SQWC - DMAC skip quadword
  1000E040h 4h     D_RBSR - DMAC ringbuffer size
  1000E050h 4h     D_RBOR - DMAC ringbuffer offset
  1000E060h 4h     D_STADR - DMAC stall address
  1000F520h 4h     D_ENABLER - DMAC disabled status
  1000F590h 4h     D_ENABLEW - DMAC disable
Interrupt Controller (INTC)
  1000F000h 4h     INTC_STAT - Interrupt status
  1000F010h 4h     INTC_MASK - Interrupt mask
Subsystem Interface (SIF)
  1000F200h 4h     MSCOM - EE->IOP communication
  1000F210h 4h     SMCOM - IOP->EE communication
  1000F220h 4h     MSFLAG - EE->IOP flags
  1000F230h 4h     SMFLAG - IOP->EE flags
  1000F240h 4h     Control register
Privileged GS registers
  12000000h 8h     PMODE - various PCRTC controls
  12000010h 8h     SMODE1
  12000020h 8h     SMODE2
  12000030h 8h     SRFSH
  12000040h 8h     SYNCH1
  12000050h 8h     SYNCH2
  12000060h 8h     SYNCV
  12000070h 8h     DISPFB1 - display buffer for output circuit 1
  12000080h 8h     DISPLAY1 - output circuit 1 control
  12000090h 8h     DISPFB2 - display buffer for output circuit 2
  120000A0h 8h     DISPLAY2 - output circuit 2 control
  120000B0h 8h     EXTBUF
  120000C0h 8h     EXTDATA
  120000D0h 8h     EXTWRITE
  120000E0h 8h     BGCOLOR - background color
  12001000h 8h     GS_CSR - control register
  12001010h 8h     GS_IMR - GS interrupt control
  12001040h 8h     BUSDIR - transfer direction
  12001080h 8h     SIGLBLID - signal

IOP Map
Subsystem Interface (SIF)
  1D000000h 4h     MSCOM - EE->IOP communication
  1D000010h 4h     SMCOM - IOP->EE communication
  1D000020h 4h     MSFLAG - EE->IOP flags
  1D000030h 4h     SMFLAG - IOP->EE flags
  1D000040h 4h     Control register
CDVD Drive
  1F402004h 1h     Current N command
  1F402005h 1h     N command status (R)
  1F402005h 1h     N command params (W)
  1F402006h 1h     Error
  1F402007h 1h     Send BREAK command
  1F402008h 1h     CDVD I_STAT - interrupt register
  1F40200Ah 1h     Drive status
  1F40200Fh 1h     Disk type
  1F402016h 1h     Current S command
  1F402017h 1h     S command status
  1F402018h 1h     S command params
Interrupt Control
  1F801070h 4h     I_STAT - Interrupt status
  1F801074h 4h     I_MASK - Interrupt mask
  1F801078h 1h     I_CTRL - Global interrupt disable
DMA registers
  1F80108xh        MDECin - channel 0
  1F80109xh        MDECout - channel 1
  1F8010Axh        SIF2 (GPU) - channel 2
  1F8010Bxh        CDVD - channel 3
  1F8010Cxh        SPU2 Core0 - channel 4
  1F8010Dxh        PIO - channel 5
  1F8010Exh        OTC - channel 6
  1F80150xh        SPU2 Core1 - channel 8
  1F80151xh        ??? - channel 9
  1F80152xh        SIF0 - channel 10
  1F80153xh        SIF1 - channel 11
  1F80154xh        SIO2in - channel 12
  1F80155xh        SIO2out - channel 13
  
  1F8010F0h 4h     DPCR - DMA priority control
  1F8010F4h 4h     DICR - DMA interrupt control
  1F801570h 4h     DPCR2 - DMA priority control 2
  1F801574h 4h     DICR2 - DMA priority control 2
IOP Timers
  1F80110xh        Timer 0
  1F80111xh        Timer 1
  1F80112xh        Timer 2
  1F80148xh        Timer 3
  1F80149xh        Timer 4
  1F8014Axh        Timer 5
Serial Interface (SIO2)
  1F808200h 40h    SEND3 buffer
  1F808240h 20h    SEND1/2 buffers
  1F808260h 1h     In FIFO
  1F808264h 1h     Out FIFO
  1F808268h 4h     SIO2 control
  1F80826Ch 4h     RECV1
  1F808270h 4h     RECV2
  1F808274h 4h     RECV3
Sound Processing Unit (SPU2)
  1F900000h 180h   Core0 Voice 0-23 registers
  1F900190h 4h     Key ON 0/1
  1F900194h 4h     Key OFF 0/1
  1F90019Ah 2h     Core attributes
  1F90019Ch 4h     Interrupt address H/L
  1F9001A8h 4h     DMA transfer address H/L
  1F9001ACh 2h     Internal transfer FIFO
  1F9001B0h 2h     AutoDMA status
  1F9001C0h 120h   Core0 Voice 0-23 start/loop/next addresses
  1F900340h 4h     ENDX 0/1
  1F900344h 2h     Status register
  
  ... above addresses repeat for Core1 starting at 1F900400h ...
  
  1F900760h 2h     Master Volume Left
  1F900762h 2h     Master Volume Right
  1F900764h 2h     Effect Volume Left
  1F900766h 2h     Effect Volume Right
  1F900768h 2h     Core1 External Input Volume Left
  1F90076Ah 2h     Core1 External Input Volume Right
 </pre>

== Memory Allocation ==
===ps2_netemu===
{| class="wikitable"
|-
! Name !! Size !! page_log2 !! lpar2(netemu 4.81) !! lpar1(lv1 4.81)
|-
| ra_vu0_dmem   ||    0x1000 (4 KB) || 12 (4 KB) ||      0x3200000 || 0x7200000
|-                                                                       
| ra_ee_spr_lo  ||    0x2000 (8 KB) || 12 (4 KB) ||      0x3201000 || 0x7201000
|-                                                                       
| ra_ee_sprx    ||    0x6000 (24 KB) || 12 (4 KB) ||      0x3203000 || 0x7203000
|-                                                                       
| ra_negmem     ||   0x10000 (64 KB) || 16 (64 KB) ||      0x3210000 || 0x7210000
|-                                                                       
| ra_iop_spad   ||   0x10000 (64 KB) || 16 (64 KB) ||      0x3220000 || 0x7220000
|-                                                                       
| ra_spu2_pcm   ||   0x10000 (64 KB) || 16 (64 KB) ||      0x3230000 || 0x7230000
|-                                                                       
| ra_nulls      ||   0x10000 (64 KB) || 16 (64 KB) ||      0x3240000 || 0x7240000
|-                                                                       
| ra_itrace     ||   0x10000 (64 KB) || 16 (64 KB) ||      0x3250000 || 0x7250000
|-                                                                       
| ra_iop_ram    ||  0x200000 (2 MB) || 20 (1 MB) ||      0x3300000 || 0x7300000
|-                                                                       
| ra_spu2_ram   ||  0x200000 (2 MB) || 20 (1 MB) ||      0x3500000 || 0x7500000
|-                                                                       
| ra_vu0_code   ||  0x400000 (4 MB) || 20 (1 MB) || 0x580000800000 || 0x900000 - 0xC00000
|-                                                                       
| ra_vu0_data   ||  0x400000 (4 MB) || 20 (1 MB) ||      0x3700000 || 0x7700000
|-                                                                       
| ra_ee_rom_pc  ||  0x400000 (4 MB) || 20 (1 MB) || 0x580000C00000 || 0xD00000 - 0x1000000
|-                                                                       
| ra_ps2_rom    ||  0x400000 (4 MB) || 20 (1 MB) || 0x580001000000 || 0x1100000 - 0x1400000
|-                                                                       
| ra_vrc_mem    || 0x1000000 (16 MB) || 20 (1 MB) || 0x600005000000 || 0x1500000 - 0x2400000
|-                                                                       
| ra_sgs_xdr    || 0x1700000 (23 MB) || 20 (1 MB) || 0x64000C000000 || 0x2500000 - 0x3B00000
|-                                                                       
| ra_ee_ram     || 0x2000000 (32 MB) || 20 (1 MB) || 0x64000E000000 || 0x3C00000 - 0x3F00000, 0x8000000 - 0x9B00000
|-                                                                       
| ra_ee_ram_pc  || 0x2000000 (32 MB) || 20 (1 MB) || 0x640010000000 || 0x9C00000 - 0xBB00000
|-                                                                       
| ra_trans_code || 0x3000000 (48 MB) || 20 (1 MB) || 0x680024000000 || 0xBC00000 - 0xEB00000
|}


==Controller==
{| class="wikitable sortable"
|-
! ID !! Controller #Number !! Note
|-
| 1 (1-A) || 1 ||
|-
| 2 (2-A) || 2 ||
|-
| 3 (1-B) || 3 ||
|-
| 4 (2-B) || 4 ||
|-
| 5 (1-C) || 5 || Gamepad LED #1 + #4
|-
| 6 (2-C) || 6 || Gamepad LED #2 + #4
|-
| 7 (1-D) || 7 || Gamepad LED #3 + #4
|-
|}

==Peripheral support==
===ps2_emu.self / ps2_gxemu.self===
#Hub
#Mouse
#Keyboard
#EyeToy
#Head Mount Display
#Mic
#Ascii Mic
#Socom USB Headset
#Usb Headset
#Sea Mic Controller
#Force Feedback device
#GT Force
#Momo Force
#Driving Force Pro
#G25/G27
#Momo Racing
#Flight Force
#Force 3D Pro
#Modem
#Guncon2
#Densya de GO! controller type 2
#Densya de GO! Sincansen senyou controller
#Capture Eye
#Flight Stick
#Flight Stick 2
#Pop Egg
#Trance Vibrator
#PSP
#Compact Flight Controller
#Flash Memory
#Buzz!
#Pachi-Slot Controller Kurouto
#Usb Adapter
#Guncon3
#Multi Train Controller
#Para Para Paradise controller

===ps2_netemu.self===
#BD Remote Control
#PLAYSTATION(R)3 Controller (Vendor ID 0x54C, Product ID 0x268), 
#Motion Controller - Move (Vendor ID 0x54C, Product ID 0x3D5), 
#Navigation Controller  (Vendor ID 0x54C, Product ID 0x42F)
#"guncon3"
<br/>
Unknown: 
#Vendor ID 0xF0D (Hori), Product ID 0x4A 
#Vendor ID 0x54C (Sony), Product ID 0x5AF

==BIOS==
===ps2_netemu.self===
Ps2_netemu use integrated PS2 bios included in ps2netemu.elf, not additional file like in ps1emu case. In 4.81 firmware BIOS is located from 0x820A00 to 0x9F09FF (0x820900 to 0x9F08FF in fw4.50). Bios version is to be Developement v2.20 from Japan region (22/01/2007), but it's of course not limited to booting only NTSC-J games.

Notable thing is that ps2_netemu use the same bios as ps2_gxemu, and ps2onps4. ps2_netemu not boot using ps2_emu bios because of failing RDRAM check. 

{| class="wikitable" style="font-size:small;"
|-
! File !! Offset in fw4.81 ps2_netemu !! Offset in exported bin !! Description !! File type (exportable)
|-
| RESET || 0x820A00 || 0x00 || Bootstrap code for the EE and IOP. || BIN
|-
| ROMDIR || 0x823180 || 0x2780 || The ROMDIR part of the ROM image, which provides information on the location and name of files contained in the image. || BIN
|-
| EXTINFO || 0x8236C0 || 0x2CC0 || Contains the "EXTINFO" for all files in the ROM image. || BIN
|-
| SBIN || 0x823D30 || 0x3330 || Seems to be the pad controller library for the PS1 monitor. || BIN
|-
| LOGO || 0x82ACD0 || 0xA2D0 || PS1 logo? || BIN
|-
| IOPBTCONF || 0x83F420 || 0x1EA20 || Boot configuration file for the IOP, during the final phase of the IOP reset. If no UDNL module is specified, the IOP will only have a single IOP reset in the reboot process, with the modules listed in IOPBTCONF.  || BIN
|-
| IOPBTCON2 || 0x83F510 || 0x1EB10 || Boot configuration file for the IOP, for the first phase of the IOP reset (before UDNL is loaded). || BIN
|-
| SYSMEM || 0x83F5E0 || 0x1EBE0 || System Memory Manager. || ELF
|-
| LOADCORE || 0x840800 || 0x1FE00 || The core of IOP module loading. Provides the lowest level of IOP module loading functions. Also handles the startup of the IOP. || ELF
|-
| EXCEPMAN || 0x842D80 || 0x22380 || Exception manager. || ELF
|-
| INTRMANP || 0x843960 || 0x22F60 || Interrupt Manager. According to wisi, it is for PS mode. || ELF
|-
| INTRMANI || 0x845370 || 0x24970 || Interrupt Manager. According to wisi, it is for IOP mode. || ELF
|-
| SSBUSC || 0x8471B0 || 0x267B0 || SSBUS Controller library. The SSBUS seems to be the bus that all peripherals get connected to. It seems to have the power to control the mapping of the device registers, as well as access timing. || ELF
|-
| TIMEMANP || 0x847920 || 0x26F20 || Timer Manager (PS mode) || ELF
|-
| TIMEMANI || 0x848500 || 0x27B00 || Timer Manager (IOP mode) || ELF
|-
| DMACMAN || 0x849130 || 0x28730 || DMA Controller Manager. || ELF
|-
| SYSCLIB || 0x84C830 || 0x2BE30 || System C Library. || ELF
|-
| HEAPLIB || 0x84EF90 || 0x2E590 || Memory HEAP LIBrary (i.e. thvpool, thfpool) || ELF
|-
| THREADLIB || 0x84FC90 || 0x2F290 || Multi_Thread_Manager || ELF
|-
| VBLANK || 0x858A20 || 0x38020 || V-Blank management || ELF
|-
| IOMAN || 0x8597B0 || 0x38DB0 || IO Manager || ELF
|-
| MODLOAD || 0x85B720 || 0x3AD20 || IOP module loader. || ELF
|-
| ROMDRV || 0x85DA70 || 0x3D070 || ROM driver. Provides access to the boot ROM (rom0). || ELF
|-
| ADDDRV || 0x85E960 || 0x3DF60 ||  Adds support for the DVD ROM (rom1:), via ROMDRV. || ELF
|-
| STDIO || 0x85DDC0 || 0x3D3C0 || Standard I/O library. || ELF
|-
| SIFMAN || 0x85F9B0 || 0x3EFB0 || SIF manager. || ELF
|-
| SIFINIT || 0x860F50 || 0x40550 || Initializes the SIF. || ELF
|-
| EESYNC || 0x861370 || 0x40970 || For synchronizing with the EE, at the end of IOP resets. EESYNC from DNAS images are evil; they also perform a memory wipe of the region from 0x00084000 to .0x00100000. || ELF
|-
| EENULL || 0x861810 || 0x40E10 ||  The idle thread (id #0) module, in ps2 loaded to 0x00081FC0. || BIN
|-
| PS1ID || 0x861850 || 0x40E50 ||  Only found in newer boot ROMs || BIN
|-
| LIBFI || 0x861860 || 0x40E60 || Not present in the boot ROM of the SCPH-10000 and SCPH-15000. || BIN
|-
| PS1VERJ || 0x861950 || 0x40F50 ||   || BIN
|-
| PS1VERA || 0x861960 || 0x40F60 ||   || BIN
|-
| PS1VERE || 0x861970 || 0x40F70 ||  || BIN
|-
| PS1VERC || 0x861980 || 0x40F80 ||  || BIN
|-
| PS1VERH || 0x861990 || 0x40F90 ||  || BIN
|-
| OSDSYS || 0x8619A0 || 0x40FA0 || The browser || BIN
|-
| - || 0x8619B0 || 0x40FB0 ||   || BIN
|-
| RDRAM || 0x861A00 || 0x41000  || Provides a RDRAM test for the EE at power-on. This is run from RESET. || BIN
|-
| EELOADCNF || 0x864750 || 0x43D50 || Contains the IOP boot configuration file for EELOAD. || BIN
|-
| SIFCMD || 0x864900 || 0x43F00 || SIF command module. Contains the SIF command and SIF RPC functions. || ELF
|-
| REBOOT || 0x866B40 || 0x46140 || The reboot service. Receives IOP reset packets from the EE, from across the SIF. || ELF
|-
| LOADFILE || 0x867310 || 0x46910 || The RPC server for MODLOAD || ELF
|-
| EECONF || 0x869A70 || 0x49070 || Loads part of the system configuration from the MECHACON EEPROM. Also configures and resets some peripherals, depending on the model version. In slimlines, and possibly on PS3 EECONF will also load the MAC address. || ELF
|-
| - || 0x86A9F0 || 0x49FF0 ||   || BIN
|-
| IOPBOOT || 0x86AA00 || 0x4A000 || IOP bootup program || BIN
|-
| - || 0x86BB60 || 0x4B160 ||   || BIN
|-
| TBIN || 0x86C200 || 0x4B800 ||  The PS1 monitor program. Seems to be the PS1 BIOS. This is started by RESET, when the IOP is in PS1 mode. || BIN
|-
| XSHA1 || 0x87A170 || 0x59770 || sha1 - this only present in PS3. It is used as additional antipiracy check. It seems that it calculate disc main elf checksum and compares it with some database. Config related?|| ELF
|-
| XLOADFILE || 0x87B140 || 0x5A740 || Updated module || ELF
|-
| SIO2MAN || 0x87E1F0 || 0x5D7F0 || SIO2 manager. Provides access to the SIO2 interface. || ELF
|-
| - || 0x87FE20 || 0x5F420 ||   || BIN
|-
| MCSERV || 0x881D40 || 0x61340 ||  RPC server for MCMAN. || ELF
|-
| - || 0x883A40 || 0x63040 ||   || BIN
|-
| KROMG || 0x884A00 || 0x64000 ||   || BIN
|-
| - || 0x8866C0 || 0x65CC0 ||   || BIN
|-
| KROM || 0x886A00 || 0x66000 || Kanji ROM? Not sure where this is used. || BIN
|-
| - || 0x8A0870 || 0x7FE70 ||   || BIN
|-
| ROMVER || 0x8A0900 || 0x7FF00 || ROM version. || BIN
|-
| - || 0x8A0910 || 0x7FF10 ||   || BIN
|-
| VERSTR || 0x8A0930 || 0x7FF30 || Version string. Probably PS1 ROM will use this because that this string is also present in PlayStation consoles. || BIN
|-
| - || 0x8A0990 || 0x7FF90 ||   || BIN
|-
| ROMGSCRT || 0x8A0A00 || 0x80000 ||   || BIN
|-
| NCDVDMAN || 0x8A3730 || 0x82D30 || It seems to be a heavily stripped-down CDVDMAN module, with no support for some S-command functions like sceCdRI. || ELF
|-
| SECRMAN || 0x8B0170 || 0x8F770 || Security Manager. Signing is NOT done with the one in ROM, but with a special version that comes with the utility discs. Looks like PS3 units have a different SECRMAN module from retail sets, similar to PS2 TOOL one. || ELF
|-
| MCMAN || 0x8B4630 || 0x93C30 || Memory Card Manager. || ELF
|-
| PADMAN || 0x8C3AC0 || 0xA30C0 || Pad manager. || ELF
|-
| CDVDMAN || 0x8CD210 || 0xAC810 || The CD/DVD manager. || ELF
|-
| CDVDFSV || 0x8D55C0 || 0xB4BC0 || The RPC server for CDVDMAN. || ELF
|-
| FILEIO || 0x8DD980 || 0xBCF80 || RPC server for IOMAN. Sony has greatly changed the semantics and design of FILEIO after some point. Connecting an old FILEIO EE RPC client to a newer server will result in a severe IOP crash. || ELF
|-
| CLEARSPU || 0x8DFA80 || 0xBF080 || Seems to clear/reset the SPU, but is known to cause crashes under some conditions. Not sure if it's buggy or not. Only used by the OSDSYS of the SCPH-10000 and SCPH-15000, probably retained for backward-compatibility. || ELF
|-
| UDNL || 0x8E16C0 || 0xC0CC0 || It is responsible for selecting the modules and starting the IOP, during the final phase of the IOP reset where the desired modules are to be loaded into the IOP. || ELF
|-
| IGREETING || 0x8E35C0 || 0xC2BC0 || Displays boot information (i.e. IOP boot type, EBOOTP, IBOOTP, switch positions for DSW602 and the type of DSW602 board installed || ELF
|-
| EELOAD || 0x8E4620 || 0xC3C20 || The EE ELF loader, which is loaded by LoadExecPS2() to 0x00082000 in PS2 for loading ELFs. || BIN
|-
| XCDVDMAN || 0x8F37A0 || 0xD2DA0 || cdvd_driver - Updated module || ELF
|-
| XCDVDFSV || 0x902530 || 0xE1B30 ||  cdvd_ee_driver - Updated module || ELF
|-
| OSDSND || 0x910960 || 0xEFF60 || OSD sound library. This is actually the tentative sound driver, which is called "librspu2" in the Sony SDK. || ELF
|-
| PS2LOGO || 0x93B5B0 || 0x11ABB0 ||  Displays the PlayStation 2 logo from the inserted disc. For newer consoles, if the logo cannot be decrypted properly, it will fall back to the browser. Not actually required to boot games, but the Sony OSDSYS boots PS2 games through this program. || ELF
|-
| XPARAM2 || 0x957F00 || 0x137500 || Store IOP emulation settings/flags || ELF
|-
| OSDSYS || 0x95A400 || 0x139A00 ||  The browser, in ps3 is stripped to parse xparam2. No real browser here. || BIN
|-
| PIOPRP || 0x998280 || 0x177880 ||  Present in the PS3 ps2_(gx/soft/net)emu; contains version 3.1.0 of the IOP software (compared to version 1.3.4 on the root). || BIN
|-
| KERNEL || 0x9DC1E0 || 0x1BB7E0 || The EE kernel || BIN
|}
Description source: https://gist.github.com/uyjulian/25291080f083987d3f3c134f593483c5

==Virtual PS2 HDD==
There are 2 different "PS2 game" contents that can be installed in PS3 HDD (CATEGORY's [[PARAM.SFO#CATEGORY_For_HDD_contents | 2P and 2G ]]).
'''2P''' are games released from PSN as "PS2 Classic" in .PKG format, and '''2G''' are a few real "PS2 DVD discs" that can be installed in the PS3 HDD, this installation is managed by the '''PS2_system_data.pkg'''.

This games can be installed in real PS2 (in the internall HDD of a PS2 fat)... later this same installation was used in the [http://en.wikipedia.org/wiki/PSX_(DVR) PSX]... and when implemented in PS3 there was needed to use a '''virtual PS2 HDD''' image file keeping the same format than the original HDD used in PS2.

Game files (extracted from the real PS2 disc) are installed in a '''IMAGE.DAT''' file, this file is a 1:1 "raw copy" of a PS2 HDD.

This '''IMAGE.DAT''' is placed in the "install folder" (inside USRDIR folder) and his size can vary up to 10+GB

There are 2 different installations: the most common is used to store "game expansions" (e.g: used by additional content in SOCOM games)... the other type of installation is a "full install" and it seems the only game that uses it is "Final Fantasy XI" (main game installation when the game boots for first time + game expansions added later when needed in the same '''IMAGE.DAT''')

'''PS2_system_data.pkg''' itself uses an '''IMAGE.DAT''' file (6.43 MB)

The structure of this "virtual PS2 HDD" uses an "APA header" and a "APA MBR" + several "APA partitions", some of them containing "PFS filesystems".

 Error message trying to boot a CATEGORY "2G" game with hand-made SFO's and invalid IMAGE.DAT file:
 '''The game partition for this game cannot be created because the installed game is corrupted.'''
 '''To perform this operation, delete the game, and then reinstall the game using the disc.'''

*Notes
**List of PS2 disc games compatibles with PS3 HDD installation hardcoded in '''dev_flash/vsh/module/[[game_ext_plugin]].sprx'''
**Virtuall PS2 HDD support module '''dev_flash/vsh/module/[[libps2hdd]].sprx''' ?

===PS2 System Data (PSN HDD Tool package)===
A direct link to the package can be found in NoPayStation database in DLCs

 Content ID: IP9100-NPIA00001_00-PS2HDDSYSDAT0001
 QA Digest: 2A876715D42678BB7A6E00C030C0121B
 HASH: E1B0DBE46FC44190DC7A140681D8B9D4

http://manuals.playstation.net/document/en/ps3/current/game/hddinstall.html

'''Titles supporting HDD installation'''
* Nobunaga's Ambition Online and Expansion Packs
* Final Fantasy XI (disc1=SCUS97266 disc2=SCUS97269)and Expansion Discs
* SOCOM II: U.S. NAVY SEALs and Related discs included with OPM Issue 87, OPM Issue 88, OPM Issue 89, OPM Issue 90
* SOCOM 3: U.S. NAVY SEALs
* SOCOM: U.S. NAVY SEALs Combined Assault
* Front Mission Online
* Official PlayStation Magazine Issue 87, 88, 89, 90 Discs
([[Talk:Emulation#PS2_HDD | non-official ps2hdd gameslist ]])

===TitleID/DiscID in game_ext_plugin.sprx===

Mainly Final Fantasy 11, Nobunaga Ambition Online, Socom IDs and the required HDD Gigabyte amount for install onto the internal hdd.

Speculation: flags are AND' with 0,1,2 (selected from sys_sm_get_hw_config according to ps2emu hardware flags? 0 = no hw?, 1 = gxemu?, 2=full hw? )

{| class="wikitable" style="font-size:small;"
! Flags !! DiscID !! Alternative? DiscID !! GigaByte !! Title !! 0 = VMC<br>1 = IMAGE.DAT !! Internal Name? !! GigaByte
|-
| rowspan="9" | 0xFFFF || SLPS20200 || rowspan="9" | SLPS25200 || rowspan="9" | 0x15 || rowspan="9" | FINAL FANTASY XI || rowspan="9" | 1 || rowspan="9" | PP.SLPM-25200.MAGIC.APPLICATION || rowspan="9" | 0x15
|-
| SLPM65705
|-
| SLPM65706
|-
| SLPM65953
|-
| SLPM66393
|-
| SLPM66394
|-
| SLPM66893
|-
| SLPM66894
|-
| SLPM55229
|-
|rowspan="4" | 0x0001 || SLPM65197 || rowspan="4" | SLPM65197 || rowspan="4" | 0x07 || rowspan="4" | 信長の野望 Online || rowspan="4" | 1 || rowspan="4" | PP.SLPM-65197.MAGIC.APPLICATION || rowspan="4" | 0x07
|-
| SLPM65783
|-
| SLPM66539
|-
| SLPM66954
|-
|rowspan="5" | 0xFFFF || SCUS97269 || rowspan="5" | SCUS97269 || rowspan="5" | 0x15 || rowspan="5" | FINAL FANTASY XI || rowspan="5" | 1 || rowspan="5" | PP.SCUS-97266.MAGIC.APPLICATION || rowspan="5" | 0x15
|-
| SLUS21070
|-
| SLUS21404
|-
| SLUS21694
|-
| SLUS21704
|-
|rowspan="7" | 0xFFFF || SCUS97275 || rowspan="7" | SCUS97275 || rowspan="7" | 0x02 || rowspan="7" | SOCOM || rowspan="7" | 0 || rowspan="7" | PP.SCUS-97275..SOCOM_II || rowspan="7" | 0x02
|-
| SCUS97474
|-
| SCUS97340
|-
| SCUS97341
|-
| SCUS97342
|-
| SCUS97442
|-
| SCUS97545
|}

In PS2 Emulator same Title IDs are present with following information: 
 SLPS25200 FINAL FANTASY XI          : 0x100000000 (4 GB?)
 SCUS97269 FINAL FANTASY XI          : 0x300000000 (12GB?)
 SLPM65981 Front Mission Online      : 0x100000000 (4 GB?)
 SLPM65197 Nobunagas Ambition Online : 0x200000000 (8 GB?)

==Emulators management from GameOS==

===Mountpoints===
  dev_ps2disc
  dev_ps2disc1 

===ps2_netemu syscalls ===
 
 0x0 - 0 = exec smth, 
       1 = 0x132 panic, 
       2 = 0x133 panic, 
       3 = 0x134 panic,
       4 = 0x135 panic, 
       else = 0x136 panic)
 0xC - exec smth
 0x5 - exec smth
 0x6 - exec smth
 0x10 - panic

 Basically are [[HV_Syscalls#HV_Syscalls|hvsc syscalls]] (xoris     r11, r11, 0x8000)
  
 0x80000000 - [[HV_Syscall_Reference#lv1_allocate_memory]]
 0x80000001 - [[HV_Syscall_Reference#lv1_write_htab_entry]]
 0x80000002 - [[HV_Syscall_Reference#lv1_construct_virtual_address_space]]
 0x80000007 - [[HV_Syscall_Reference#lv1_select_virtual_address_space]]
 0x80000009 - [[HV_Syscall_Reference#lv1_pause]]
 0x8000000F - [[HV_Syscall_Reference#lv1_put_iopte]]
 0x80000012 - [[HV_Syscall_Reference#lv1_construct_event_receive_port]]
 0x8000001A - [[HV_Syscall_Reference#lv1_detect_pending_interrupts]]
 0x8000001B - [[HV_Syscall_Reference#lv1_end_of_interrupt]]
 0x8000001C - [[HV_Syscall_Reference#lv1_connect_irq_plug]]
 0x80000039 - [[HV_Syscall_Reference#lv1_construct_logical_spe]]
 0x8000003D - [[HV_Syscall_Reference#lv1_set_spe_interrupt_mask]]
 0x80000042 - [[HV_Syscall_Reference#lv1_clear_spe_interrupt_status]]
 0x80000043 - [[HV_Syscall_Reference#lv1_get_spe_interrupt_status]]
 0x80000045 - [[HV_Syscall_Reference#lv1_get_logical_ppe_id]]
 0x80000049 - [[HV_Syscall_Reference#lv1_set_interrupt_mask]]
 0x8000004A - [[HV_Syscall_Reference#lv1_get_logical_partition_id]]
 0x8000004E - [[HV_Syscall_Reference#lv1_get_spe_irq_outlet]]
 0x8000005B - [[HV_Syscall_Reference#lv1_get_repository_node_value]]
 0x8000005F - [[HV_Syscall_Reference#lv1_read_htab_entries]]
 0x80000061 - [[HV_Syscall_Reference#lv1_set_vmx_graphics_mode]]
 0x80000062 - [[HV_Syscall_Reference#lv1_set_thread_switch_control_register]]
 0x80000074 - [[HV_Syscall_Reference#lv1_allocate_io_segment]]
 0x80000076 - [[HV_Syscall_Reference#lv1_allocate_ioid]]
 0x80000078 - [[HV_Syscall_Reference#lv1_construct_io_irq_outlet]]
 0x8000007C - [[HV_Syscall_Reference#lv1_undocumented_function_124]]
 0x8000007D - [[HV_Syscall_Reference#lv1_undocumented_function_125]]
 0x8000007E - [[HV_Syscall_Reference#lv1_undocumented_function_126]]
 0x80000088 - [[HV_Syscall_Reference#lv1_undocumented_function_136]]
 0x8000008C - [[HV_Syscall_Reference#lv1_construct_lpm]]
 0x8000008D - [[HV_Syscall_Reference#lv1_destruct_lpm]]
 0x8000008E - [[HV_Syscall_Reference#lv1_start_lpm]]
 0x8000008F - [[HV_Syscall_Reference#lv1_stop_lpm]]
 0x80000090 - [[HV_Syscall_Reference#lv1_copy_lpm_trace_buffer]]
 0x80000091 - [[HV_Syscall_Reference#lv1_add_lpm_event_bookmark]]
 0x80000092 - [[HV_Syscall_Reference#lv1_delete_lpm_event_bookmark]]
 0x80000093 - [[HV_Syscall_Reference#lv1_set_lpm_interrupt_mask]]
 0x80000094 - [[HV_Syscall_Reference#lv1_get_lpm_interrupt_status]]
 0x80000095 - [[HV_Syscall_Reference#lv1_set_lpm_general_control]]
 0x80000096 - [[HV_Syscall_Reference#lv1_set_lpm_interval]]
 0x80000097 - [[HV_Syscall_Reference#lv1_set_lpm_trigger_control]]
 0x80000098 - [[HV_Syscall_Reference#lv1_set_lpm_counter_control]]
 0x80000099 - [[HV_Syscall_Reference#lv1_set_lpm_group_control]]
 0x8000009A - [[HV_Syscall_Reference#lv1_set_lpm_debug_bus_control]]
 0x8000009B - [[HV_Syscall_Reference#lv1_set_lpm_counter]]
 0x8000009C - [[HV_Syscall_Reference#lv1_set_lpm_signal]]
 0x8000009D - [[HV_Syscall_Reference#lv1_set_lpm_spr_trigger]]
 0x800000A3 - [[HV_Syscall_Reference#lv1_write_virtual_uart]]
 0x800000A4 - [[HV_Syscall_Reference#lv1_set_virtual_uart_param]]
 0x800000A5 - [[HV_Syscall_Reference#lv1_get_virtual_uart_param]]
 0x800000A6 - [[HV_Syscall_Reference#lv1_configure_virtual_uart_irq]]
 0x800000AA - [[HV_Syscall_Reference#lv1_open_device]]
 0x800000AB - [[HV_Syscall_Reference#lv1_close_device]]
 0x800000AC - [[HV_Syscall_Reference#lv1_map_device_mmio_region]]
 0x800000AE - [[HV_Syscall_Reference#lv1_allocate_device_dma_region]]
 0x800000AF - [[HV_Syscall_Reference#lv1_free_device_dma_region]]
 0x800000B0 - [[HV_Syscall_Reference#lv1_map_device_dma_region]]
 0x800000B1 - [[HV_Syscall_Reference#lv1_unmap_device_dma_region]]
 0x800000B2 - [[HV_Syscall_Reference#lv1_read_pci_config]]
 0x800000B3 - [[HV_Syscall_Reference#lv1_write_pci_config]]
 0x800000C5 - [[HV_Syscall_Reference#lv1_connect_interrupt_event_receive_port]]
 0x800000CF - [[HV_Syscall_Reference#lv1_enable_logical_spe]]
 0x800000D2 - [[HV_Syscall_Reference#lv1_gpu_open]]
 0x800000D4 - [[HV_Syscall_Reference#lv1_gpu_device_map]]
 0x800000D6 - [[HV_Syscall_Reference#lv1_gpu_memory_allocate]]
 0x800000D9 - [[HV_Syscall_Reference#lv1_gpu_context_allocate]]
 0x800000DD - [[HV_Syscall_Reference#lv1_gpu_context_iomap]]
 0x800000E1 - [[HV_Syscall_Reference#lv1_gpu_context_attribute]]
 0x800000E3 - [[HV_Syscall_Reference#lv1_gpu_context_intr]]
 0x800000E4 - [[HV_Syscall_Reference#lv1_gpu_attribute]]
 0x800000F5 - [[HV_Syscall_Reference#lv1_storage_read]]
 0x800000F6 - [[HV_Syscall_Reference#lv1_storage_write]]
 0x800000F9 - [[HV_Syscall_Reference#lv1_storage_get_async_status]]

===LPAR / AUTH ID's===
{| border="1" cellspacing="0" cellpadding="5" border="#999" class="wikitable" style="border:1px solid #999; border-collapse: collapse;" 
|- bgcolor="#cccccc"
! Name !! Auth ID !! Self<br />(/dev_flash/ps2emu) !! Notes
|-
| PS2_LPAR  || 0x1020000003000001 || rowspan="2" | ps2_emu.self || 
|-
| *SCE_CELLOS_SYSTEM_MGR_PS2  || 0x107000001D000001 || 
|-
| PS2_GX_LPAR || 0x1020000003000001 || rowspan="2" | ps2_gxemu.self || 
|-
| *SCE_CELLOS_SYSTEM_MGR_PS2_GX || 0x107000001D000001 || 
|-
| PS2_SW_LPAR || 0x1020000003000001 || rowspan="2" | ps2_softemu.self || 
|-
| *SCE_CELLOS_SYSTEM_MGR_PS2_SW || 0x107000001D000001 || 
|-
| PS2_NE_LPAR || 0x1020000003000001 || rowspan="2" | ps2_netemu.self || 
|-
| *SCE_CELLOS_SYSTEM_MGR_PS2_NE || 0x107000001D000001 || 
|-
|}

===Getting compatibility hardware info===
See: [[PS2_Compatibility#Software]]

===ps2bootparam.dat===
A file created at path: dev_hdd0/tmp/game/'''ps2bootparam.dat'''
*See: [[ps2bootparam.dat]]<!--we need this page because we have others like that in wiki-->

===Cobra core===
taken from storage_ext.c
 <pre> patch_ps2emu_entry(ps2emu_type); </pre>
*sets proper ps2_(gx/soft)emu.self path for reboot
*patches ss_storage service 0x5004 disc checks on ss_server3.self inside lv1
  (Change from Parameter li r3, 2 and li r3, 1E (Drive Authentification) to li r3, 0x29 (Reset Drive))
*and the usual either replace read/ioctl for iso etc.

==Game CONFIG==
Some of the PS2 emulator types (such ps2_gxemu.self, ps2netemu.self) are able to load config commands that are applyed "by game ID". The concept of "game patches" is not technically correct because some of the commands does patching functions but others does other things (not patching), and other commands works as switches or sets a value that are enviromental settings for the emulator (not for the game) but because are applyed "by game" should be considered enviromental settings for that specific game, so for simplification purposes you can think in all this data as "game configs"

This "game config" data seems to work in the same way for all the PS2 emulator types but can be located in different places, some are hardcoded inside the emulators itself (inside the .self), and at the time the "PS2 classics" emulator (ps2_netemu.self) was developed this config can be loaded from an external file<!--and there is some more inside some .sprx or inside the ps2 hdd data pkg ?-->

In short, the "game configs" can modify the game image (by patching it) and can be used to configure the virtual PS2 (the emulated machine). And can be loaded from hardcoded data (inside the .self) or from an external file (this feature is supported only by ps2_netemu.self)

The config data consists in a list of concatenated values of 8 bytes lenght (uint32_t), and can be processed like this:
 union{
  uint32_t command
  ...data...
 }

===Config Commands===
 ps2_netemu.self fw4.50 sub_12D7D8, fw4.81 sub_12E050
 params are uint32_t unless noted.

At the time of writing this, most of the commands are completely or partially unknown.<br />
If you want to read some speculation and brainstorming about them, please join the {{talk}} page

{| class="wikitable sortable"
|-
! CMD ID !! Example !! Notes
|-
| 0x00|||| Copy following title id for enforcing if available.
|-
| 0x01|||| 2x uint32_t Params ( addr, func_id 0-0x3B) - EE_ADD_HOOK

 Most of 0x01 commands are strictly per game fixes, or at least per game engine. 
  [Grand Theft Auto 3 (EU)] uses 0x349790, 0x10 (somewhat floats related)
  [Max Payne] uses 0x52E9F4, 3 and 0x52EB78, 2 (set lwsync 0)
 Maximum Amount of Usage: ?
 (The command is used 3 times consecutively by SLUS-20565 (Champions of Norrath) and SLUS-21494 (Need for Speed Carbon)
 game configs hardcoded inside ps2_gxemu.self)
{| class="wikitable sortable"
|-
!Function ID!! Notes
|-
|0x00|| 
|-
|0x01|| FIFA 2000 use it as hook for EE kernel at 0x80001858 (DMAC related). 
|-
|0x02|| 
Max Payne
sets some sync off?
|-
|0x03|| 
Max Payne
sets some sync on?
|-
|0x04|| Used by Castle Shikigami II store 0 on 0x94A290 (EMU Memory)
|-
|0x05|| Used by Star Wars games developed by Pandemic Studios (freeze fix), Worms 3D and NBA 08.
|-
|0x06|| 
|-
|0x07|| 
|-
|0x08|| Harry Potter - Quidditch World Cup US use it at offset 0x2BD45C (EE)
|-
|0x09|| Harry Potter - Quidditch World Cup US use it at offset 0x2BD620 (EE)
|-
|0x0A|| 
|-
|0x0B|| 
|-
|0x0C|| Used by Piglet's Big Game
|-
|0x0D|| usleep(100)
|-
|0x0E|| Used 3 times in Need for Speed - Carbon [Collector's Edition] US
|-
|0x0F|| 
GTA 3 (US)
 using 0x348B40, 0x18E1F0, 0x348EC8 ( + 200000000 base )
 0x348B40 = start CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 
 0x18E1F0 = start CCollision::ProcessColModels((CMatrix const &, CColModel &, CMatrix const &, CColModel &, CColPoint *, CColPoint *, float *))
 0x348EC8 = Almost end (only loading values preserved on stack) of CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 
|-
|0x10|| 
GTA 3 (EU)
 using 0x349790, 0x18E1F0, 0x349B18 ( + 200000000 base ) 
 0x349790 = start CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 
 0x18E1F0 = start CCollision::ProcessColModels((CMatrix const &, CColModel &, CMatrix const &, CColModel &, CColPoint *, CColPoint *, float *))
 0x349B18 = Almost end (only loading values preserved on stack) of CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 
|-
|0x11|| 
GTA 3 (EU different ver.)
 using 0x3495C0, 0x18E1F0, 0x349948 ( + 200000000 base )
 0x3495C0 = start CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 
 0x18E1F0 = start CCollision::ProcessColModels((CMatrix const &, CColModel &, CMatrix const &, CColModel &, CColPoint *, CColPoint *, float *))
 0x349948 = Almost end (only loading values preserved on stack) of CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 
|-
|0x12|| Used by Disney/Pixar Finding Nemo (fixes the pause menu freeze)
 if condition met...
 store 0 in [ 0x204FC500 + 200000000 base] 0x4FC500 EE memory
|-
|0x13|| 
|-
|0x14|| 
|-
|0x15|| 
|-
|0x16|| Used exclusively by Champions of Norrath (NTSC)
 store 0x01114BA8 in [ 0x208EAB4C + 200000000 base]
 store 0x010C9E40 in [ 0x208EAB6C + 200000000 base]
|-
|0x17|| 
 condition r18 == 0x8000
 setting:
  stores 0x40490FDA somewhere 
Note: 0x40490FDA (3.14159250) is the highest float approximation to π in hexadecimal without going over the value.<br />
Probably can improve FPU accuracy for some games.
|-
|0x18||
 condition [ 0x20183F04 + 200000000 base ] == 0x0C060F2C 
 setting:
  stores 0 in address 0x20183F04, 0x20183F34, 0x20183F3C ( + 0x200000000 base )
  0x183F0C, sub_46334 (4.70)
  0x183F3C, sub_45DA4 (4.70)
  0x183D74, sub_47B50 (4.70)
|-
|0x19|| 
|-
|0x1A|| 
 store 0 in [ 0x209FD560 + 200000000 base]
 store 0 in [ 0x209F9550 + 200000000 base]
 store 0 in [ 0x20A01570 + 200000000 base]
 store 0 in [ 0x209F9540 + 200000000 base]
 store 0 in [ 0x209F5540 + 200000000 base]
 store 0 in [ 0x209F1530 + 200000000 base]
|-
|0x1B|| store 0 in [ 0x20552168 + 200000000 base]
|-
|0x1C|| store 1 in [ 0x20552168 + 200000000 base]
|-
|0x1D|| store 0 in [ 0x20556C08 + 200000000 base]
|-
|0x1E|| store 1 in [ 0x20556C08 + 200000000 base]
|-
|0x1F|| store 0 in [ 0x205243D8 + 200000000 base]
|-
|0x20|| store 1 in [ 0x205243D8 + 200000000 base]
|-
|0x21|| store 0 in [ 0x20524F88 + 200000000 base]
|-
|0x22|| store 1 in [ 0x20524F88 + 200000000 base]
|-
|0x23|| store 0 in [ 0x2047E7F8 + 200000000 base]
|-
|0x24|| store 1 in [ 0x2047E7F8 + 200000000 base]
|-
|0x25|| store 0 in [ 0x204802B8 + 200000000 base]
|-
|0x26|| store 1 in [ 0x204802B8 + 200000000 base]
|-
|0x27|| store 0 in [ 0x20586348 + 200000000 base]
|-
|0x28|| store 1 in [ 0x20586348 + 200000000 base]
|-
|0x29|| store 0 in [ 0x205868A8 + 200000000 base]
|-
|0x2A|| store 1 in [ 0x205868A8 + 200000000 base]
|-
|0x2B|| 
|-
|0x2C|| Shin Onimusha - Dawn of Dreams Fix ingame IPU runtime - JPN/US release [https://github.com/PCSX2/pcsx2/issues/1141 bug]
|-
|0x2D|| Shin Onimusha - Dawn of Dreams Fix ingame IPU runtime - PAL release [https://github.com/PCSX2/pcsx2/issues/1141 bug]
|-
|0x2E|| 
|-
|0x2F|| condition [ 0x37B0C4 + 200000000 base ] == 0 -> 00 10 0B 98 
|-
|0x30|| condition [ 0x37B704 + 200000000 base ] == 0 -> 00 10 0B 98 
|-
|0x31|| condition [ 0x37630C + 200000000 base ] == 0 -> 00 10 0B A8 
|-
|0x32|| condition [ 0x37BB0C + 200000000 base ] == 0 -> 00 10 0B A8 
|-
|0x33|| 
|-
|0x34|| not filled
|-
|0x35|| 
|-
|0x36|| 
|-
|0x37|| 
|-
|0x38||
|-
|0x39|| 
|-
|0x3A|| 
|-
|0x3B|| GTA 3 (JP/AS) ? using 0x351210, 0x18F590, 0x351568 ( + 200000000 base )
|}
|-
|0x02|||| 1 Param, Config file revision ?
|-
|0x03|||| 0 Param, sets something 0
|-
|0x04|||| 1 Param uint32_t index (i*0x80, special 0x12345: 0x91a280?)
|-
|0x05|||| read next command
|-
|0x06|||| 0 Param, sets something 0x14F80 (85888'd)
|-
|0x07|||| 1 Param uint32_t (default 1)
 Delay VU xgkick by X cycles
|-
|0x08|||| 8 Param uint32_t (read mask,read mask, original opcode, original opcode, write mask, write mask, replace opcode, replace opcode)
 Maximum Amount of Usage: 3 times
 Patch VU memory by mask 
|-
|0x09|||| uint32_t count, <list> (offset, original opcode, original opcode, replace opcode, replace opcode) - EE_INSN_REPLACE64
   [Dark Cloud] uses 1
   [Dead Or Alive 2 Hardcore] uses 1
 Maximum List Count: 32
|-
|0x0A|||| uint32_t count, <List> (offset, original opcode, replace opcode) - EE_INSN_REPLACE32 --- command present only in the ps2_netemu
   [Deadly Strike] uses 1
   [Dragon Force] uses 2
 Maximum List Count: 32
|-
|0x0B|||| 1 Param uint32_t count, <List> {sector id, offset, sizeof present opcodes, replace opcodes, original opcodes} - MECHA_SET_PATCH
 offset on disc = sector id * sector size + offset (-0xC for DVD [not always applied, see Psychonauts or
 SRS: Street Racing Syndicate configs], +0x18 for CD [raw 2352 sector size])
  [Dead Or Alive 2 Hardcore] uses 7
  [Gradius V] uses 1
  [Grand Theft Auto III] uses 1
  [Katamari Damacy] uses 1
  [Manhunt] uses 1
  [Odin Sphere] uses 2
  [Primal] uses 1
  [Psychonauts] uses 1
  [Syphon Filter The Omega Strain] uses 1
 Maximum List Count: 47
|-
|0x0C|||| 1 Param (uint16_t, uint16_t) --- 0/1/2,<0x63>
|-
|0x0D|||| 1 Param, true/false
 Default Init = 1?
 0 == skip some code, 
 1 == some code + checks
|-
|0x0E|||| 1 Param offset --- Improves ADD/SUB accuracy for selected offset (incl. Floats) 
  [Rygar] only has 0x147DA8 sub.s   $f12, $f20, $f12
 Used in official configs: SCUS97501=0x3C458C, SCES53642=0x3C4854, SLUS21026=0x386864, SLUS20916=0x121F64, SLUS20437=0x11EDF0
 Maximum Amount of Usage: 31 times
|-
|0x0F|||| List <uint32_t Param, uint32_t Param> --- More accurate memory range (FPU mul/div/sub/add accuracy related) 
  [Dark Cloud] uses 0x239334, 0x1FFFFFF
  [Grand Theft Auto SA] uses 0x1E46DC, 0x1E4AE8
 Maximum List Count: 31 
|-
|0x10||||  List <uint32_t Param, uint32_t Param> --- More accurate memory range (COP2, mul/div/sub/add accuracy related) - MULDIV_Accurate_range
 Maximum List Count: 31 
|-
|0x11|||| 1x uint32_t Param. ADD/SUB accuracy related, all emulated ADD/SUB instruction variations check that value. Param seems to be VU memory offset (need confirmation).
 Used in official configs: SLUS21172=0x208, SLUS20878=0x140,0x368,0x570
 Maximum Amount of Usage: 31 times
|-
|0x12||||  <List> (uint32_t count,
  [Primal] uses 0xD
  [Rayman Arena] uses 0x11
  [Syphon Filter: The Omega Strain] uses 0x5
 00 00 00 0?
 00 00 00 00
 type? count?
 ...  
 Maximum List Count: 63 
|-
| 0x13|||| 1x uint64_t Param --- Memory card timing related
 Jak X: Combat Racing uses 0xf960 (63840)
 Netsu Chu! Pro Yakyuu 2004 uses 0xf960 (63840)
 Phantasy Star Universe uses 0x9bdc (39900)
 WRC II Extreme uses 0x9bdc (39900)
 Burnout Dominator uses 0x9bdc (39900)
 Jissen Pachi-Slot Hisshouhou! Kemono-Oh uses 0x1d394 (119700)
 Used in official configs: SCUS97429=0xF960(63840), SLPM66031=0x9BDC(39900), SLPS20131=0x1D394(119700)
|-
| 0x14|||| 0 Param, sets something 1
|-
| 0x15|| 4 || 1 Param ( <1, >1 ), different settings/mode?
 [Bloodrayne 2] uses 4
 [GRIMgRiMoiRe] uses 4
 [Mana Khemia 2] uses 4
 [Odin Sphere] uses 4
 [SMT Persona 3 FES] uses 4
|-
| 0x16|||| = 0x05 (next id)
|-
| 0x17||1 || 1 Param, true/false?
 [Bully] uses 1
|-
| 0x18|||| = 0x16 = 0x05 (next id)
|-
| 0x19 |||| 0 Param, sets something 1 --- SB_SIO2 related?
 [Grand Theft Auto III]
 [Red Faction 2]
 [Siren]
|-
| 0x1A|||| 0 Param, sets something 1
|-
| 0x1B|||| 0 Param, sets something 1
 [Mana Khemia 2]
|-
| 0x1C |||| read uint32_t (use uint8_t) Param (default 3)
|-
| 0x1D |||| read uint32_t (use uint8_t) Param 
|-
| 0x1E |||| read uint32_t (use uint8_t) Param 
|-
| 0x1F |||| uint32_t Param (default 0x3E8?)
|-
| 0x20|||| uint64_t Param (default 0x3C)
 Config value is used as multiplier for some value, and result is used in vsync related runtimes.
 Is worth to note that 0x3C is default multiplier even for PAL titles, so is not stricly related to framerate,
 but to vsync counters (where 0x3C is still wrong anyway..). Result of multiply is also compared at some point to vsync delay value. 
|-
| 0x21|| 1 || 1 Param: 
 0 = sets an option from 1 to 0 and another one to 0,
 1 = sets an option from 1 to 0 and another one to 1,
 2 = sets an option from 1 to 1 and another one to 0
  [Fatal Frame II] uses 0
  [Grand Theft Auto Vice City] uses 1
  [Grand Theft Auto III (EU)] uses 1
  [SMT Persona 3 FES] uses 0
|-
| 0x22|||| 0 Param, sets something 1
|-
| 0x23|||| 0 Param --- memcpy 0x100 Bytes and sets 0x14E00
|-
| 0x24|||| uint64_t Param
|-
| 0x25|||| = 0x18 = 0x16 = 0x05 (next id)
|-
| 0x26|||| List <uint32_t Param,uint32_t Param> --- Improves ADD/SUB accuracy for selected memory range (incl. Floats) - FPU_Accurate_range
 
  [Bloodrayne 2] uses 0x340000, 0x350000
  [Gradius V] uses 0x3046E0, 0x0x305E44
 Maximum List Count: 31 
 Maximum Amount of Usage: ??
  The command is used 4 times consecutively by [Strawberry Shortcake: The Sweet Dreams]
   SLES-54309 (EU) and
   SLUS-21497 (US) game configs hardcoded inside ps2_gxemu.self
|-
| 0x27|||| List <uint32_t Param,uint32_t Param> --- Improves COP2 operations accuracy for selected memory range - VU0 macromode accurate range
 Maximum List Count: 31 
|-
| 0x28|||| 1x uint32_t Param (<=3)
|-
| 0x29 |||| 2x uint32_t Param,
|-
| 0x2A|||| 0 Param, sets something 1 --- Allow online downloadable content (HDD)? Multitap? Local 2 player?
 All-Star Baseball 2004
|-
| 0x2B|||| 0 Param, sets something 1 --- Allow disc eject/swap?
 Dance Factory
|-
| 0x2C |||| 1 Param, uint32_t
 Summoner uses 0x1
|-
| 0x2D |||| = 0x25 = 0x18 = 0x16 = 0x05 (next id)
|-
| 0x2E |||| 1 Param, uint32_t
|-
| 0x2F |||| 1 Param, uint32_t --- SPU2 related?
 Indigo Prophecy/Fahrenheit uses 0x1 
|-
| 0x30|||| (nothing)
|-
| 0x31|||| (nothing)
|-
| 0x32|||| (nothing)
|-
| 0x33|||| (nothing)
|-
| 0x34|||| (nothing)
|-
| 0x35|||| 0 Param --- Enables Force Flip Field, described in emu setting as "''Fix for [Hang] for soft-lock''"
|-
| 0x36|||| (nothing)
|-
| 0x37|||| (nothing)
|-
| 0x38|||| (nothing)
|-
| 0x39 |||| (nothing)
|-
| 0x3A|||| (nothing)
|-
| 0x3B|||| (nothing)
|-
| 0x3C |||| (nothing)
|-
| 0x3D |||| 1 Param, uint32_t Config file revision

{| class="wikitable sortable"
|-
! Firmware !! ps2_netemu Revision !! Max Supported Commands
|-
| 3.70 || 15686 || 0x41
|-
| 3.73 || 15936 || 0x41
|-
| 3.74 || 15936 || 0x41
|-
| 4.00 || 16195 || 0x41
|-
| 4.01 || 16195 || 0x41
|-
| 4.10 || 16361 || 0x41
|-
| 4.11 || 16361 || 0x41
|-
| 4.20 || 16604 || 0x43
|-
| 4.21 || 16604 || 0x43
|-
| 4.23 || 16604 || 0x43
|-
| 4.25 || 16740 || 0x43
|-
| 4.26 || 16740 || 0x43
|-
| 4.30 || 16808 || 0x45
|-
| 4.31 || 16808 || 0x45
|-
| 4.40 || 16916 || 0x46
|-
| 4.41 || 16916 || 0x46
|-
| 4.45 || 17041 || 0x48
|-
| 4.46 || 17041 || 0x48
|-
| 4.50 || 17179 || 0x4A
|-
| 4.55 || 17277 || 0x4D
|- 
|4.60<br />
4.70<br />
4.75<br />
4.76<br />
|| 17314 || 0x4D
|- 
|4.78<br />
4.80<br />
4.81<br />
|| 17495 || 0x50
|- 
|}
|-
| 0x3E |||| 0 Params --- Sets something 1
 Default Init = 0
 0 == do set some stuff, 
 1 == skip
 Similar to 0x0D with param 0. Affect the same code path, but skips more code. 
|-
| 0x3F |||| 1 Param, uint32_t
|-
| 0x40|||| 0 Param --- Sets something 1
 Grand Theft Auto SA
 Silent Hill Origins - unofficial fix
|-
| 0x41|||| 0 Param --- Sets something 1 (Disables some lwsync - speedhack?)
 Dragon Force
 God Hand
 Gradius V
 Katamari Damacy
|-
| 0x42|||| EE Overlay patch. 2 main Params + patch data: uint32_t address, uint32_t count, opcode,opcode,opcode... 
 Address need to be in 0xFF000 - 0xFFFFC range.
 Count is size of patch in 4 bytes opcodes. So 5 opcode patch = count 5.
 Opcodes will be placed on selected address, we use only patch code, no need for original opcode.
 Next opcode addresses are auto calculated (+4..) so we need to specify only patch start address.
 Remember we need to jump to our new code, best way is command 0x0A with j (jump) opcode.
 Also is important to add return jump if required. That one need to be added in our 0x42 patch.  
 Maximum opcodes count seems to be 0x3FF (1023 opcodes).
|-
| 0x43|||| 1 Param --- Equal to 0x40, but with Parameter:
 0 = Default
 1 = (like 0x40)
 param = 
 -1 = failure?
|-
| 0x44|||| 0 Param --- Disables Smoothing and Smoothing option
|-
| 0x45|||| 0 Param --- Sets something 1
 Phantasy Star Complete Collection
|-
| 0x46|||| 0 Param --- Enables L2H Improvement, [Performance] related setting for titles using L2H
 SMT Digital Devil Saga 1
 SMT Nocturne
 Fatal Frame II
|-
| 0x47|||| 0 Param --- Enables XOR CSR - XOR System Status Register (0x12001000)?, [Graphics] related setting, should fix fullscreen line corruption
|-
| 0x48|||| VSYNC Delay, 2x uint32_t Param
*First param possible value are 1 = No IPU, 2 = IPU, 3 = Anytime.
*Second param is delay (in ms?), and can be also negative value.
**Emu has standard presets for second param.
***Agressive = 0x3D090 (250000 decimal),
***Normal = 0x186A0 (100000 decimal),
***Conservative = 0x4E20 (20000 decimal),
***But other values can be used.
 [SMT Digital Devil Saga 1] uses 1, 0x3D090
 [Fatal Frame II] uses 0x2, 0xFFFFE69C (-6500 decimal)
|-
| 0x49|||| 0 Param --- Sets something 0xB,0,0
 Trapt
|-
| 0x4A|||| 0 Param --- Sets something 0x15100
 Applies to the Snowblind Engine games. Fixes the rest of flickering textures.
 Meant to be used in conjunction with the GX/SOFT Snowblind Engine's specific commands (double 0x01 and 0x23 combo).
|-
| 0x4B|||| Redirect SAVEDATA by ID, 2 x uint32_t Params + ID: offset, int, char[12]
 For proper config we need at least 2 (can be more if needed) 0x4B commands, one to enable redirect, one to disable.
 First param is EE memory offset that when is hit enable/disable redirection.
 Second param is partially unknown, seems to be size of next param to read * 4 (3 in known configs), or 0xFFFFFFFF for disable redirect command.
 Third param is ID of SAVEDATA we want to use padded with 00 to match 12 bytes, or all 00 in disable redirect config.
 Important note here is that config have own 00 00 00 00 terminator at the end. 
 So after 12 bytes of ID we need to add 4 bytes of 00. That apply also to disable redirect version.
|-
| 0x4C|||| 2x uint32_t Params: offset,int (2 = current path?, 3 = new ISO.BIN.ENC path?, other= ?)
|-
| 0x4D|||| 1 uint32_t Param (can be -1) --- Sets something (same as 0x49 but) 0xC, Param, 0
 Wild Arms: The Fifth Vanguard uses 0x3F800000
|-
| 0x4E|||| (nothing)
|-
| 0x4F|||| (nothing)
|-
| 0x50|||| 0 Param --- Enables pressure sensitive controls
|-
|}

===Config file examples (for netemu)===

====Official PS2 Classic====
See: [[PS2 Official Configs]]

====Official GXEMU/SOFTEMU extracted====
See: [[PS2 Official Configs]]

==== Custom Configs ====
See: [[PS2 Custom Configs]]

===Config data examples (hardcoded)===
====Inside ps2_emu.self====
Embedded patches are based on Checksum/Hash of title. ps2_emu is only emulator version where patches are described inside self file in ascii. Known patch types described in ascii are: Patch data, new SPU2 params, and Setting mecha HACK to show GODZCD as GODZCDDA.

{| class="wikitable sortable"
! PS2 Title !! Hash !! Game !! Patch Type !! Data
|-
| SCUS_971.46|| 0x6B1ADE00D||Disney's Treasure Planet || Patch data - Fixes black screen at start, it apply to STREAM_D.IRX file in IOP folder. || 0x147C (sector) , 0x580 (offset) (- 0xC on disc) 
 Replace opcodes
 00 01 01 3C	lui	at,0x0100
 80 BF 03 3C 	lui	v1,0xBF80
 C8 10 63 8C	lw	v1,0x10C8(v1)
 24 18 61 00	and	v1,at
 FB FF 61 10	beq	v1,at, -0x10
 00 00 00 00 	nop	
 
 Original opcodes
 FF FF 01 24	li	at,-0x1
 04 00 61 14 	bne	at,v1, +0x14
 00 80 01 3C	lui	at,0x8000
 02 00 41 14	bne	at,v0, +0x0C
 00 00 00 00	nop	
 0D 00 06 00 	break   
|-
|SLUS_201.74 ||0x23D92589C5|| Rumble Racing || Patch data - fixes black screen after Playstation 2 logo. Patch apply to AUDIO.IRX file in MODULES folder || 0x3AEDA (sector), 0x120 (offset)
 Replace opcodes
 06 00 80 14	bnez	a0, +0x1C
 21 20 43 00 	addu	a0,v0,v1
 21 10 A0 00	move	v0,a1
 02 00 A0 14 	bnez	a1, +0x0C
 00 00 00 00	nop	
 01 00 05 24 	li	a1,0x1
 EB FF 40 10	beqz	v0, -0x50
 04 00 84 24 	addiu	a0,0x4
 FC FF 90 24	addiu	s0,a0,-0x4
 	
 Original opcodes
 07 00 80 14	bnez	a0, +0x20
 21 80 43 00 	addu	s0,v0,v1
 21 10 A0 00	move	v0,a1
 02 00 A0 14	bnez	a1, +0x0C
 00 00 00 00	nop	
 01 00 05 24 	li	a1,0x1
 FC FF 40 10	beqz	v0, -0x0C
 00 00 00 00	nop	
 04 00 04 26	addiu	a0,s0,0x4
 	
|-
|SLUS_211.96||0x24D92589D5|| Indigo Prophecy || new SPU2 params || 1
|-
|SLPM_661.93||0x608634992D|| <abbr title="https://www.gamefaqs.com/ps2/544598-indigo-prophecy/data">Fahrenheit (NTSC-J)</abbr> || new SPU2 params || 1
|-
|SLUS_212.96||0x5CA15DF14D|| Dance Factory ||Setting mecha HACK to show GODZCD as GODZCDDA ||
|}

====Inside ps2_gxemu.self/ps2_softemu.self====
There are hundreds of configs hidden in ps2_gxemu, and ps2_softemu self files. Internal config structure is basing on custom hash based on Title ID, internal memory offset pointing to place where true patch instruction is, and count of used commands. When disc/iso is started emulator search for configs, and if config for selected ID exist, then emulator apply it by itself. Is not perfect way of applying patches, because some games use the same ID, but different content. Good example here is Star Wars Battlefront II SLUS-21240, where some versions of game can refuse to work because it apply bad patch.

{| class="wikitable sortable"
! PS2 Title !! Hash !! Game !! Patch Type !! Data
|-
|  ||  ||  ||   ||  
|}

==Known Emulation Bugs==
This list known bugs inside emulator code that make emulation inaccurate. Since those are only EE side bugs for now, ps2_gxemu/ps2_netemu/ps_softemu share the same issues. 
{| class="wikitable sortable"
! Bug !! Description !! Known Affected Games
|-
| Missing Emotion Engine Cache emulation || Emulating that is literally not possible without making games run at 3 fps. Fixed by patches to game image, or EE code. || Ice Age 2, DOA2: Extreme, Nascar 2009 (luckily fixed by instant VIF bug).
|-
| Branch delay slot violation not supported on EE || Some games have Branch instruction inside Branch delay slots, this is not emulated correctly on EE (VU have proper emulation of that). This is patched in configs by rearangging MIPS code. || WRC 3,4,Rally Evolved, one of Action Replay discs.  
|-
| VIF is instant || There is no correct timing, or even attempt to emulate that. Everyting done by VIF0/1 is done right when pushed || Nascar 2009 is affected in possitive way, game don't have time to corrupt transfer. Probably many more games. 
|-
| XGKick is instant || Some games expect to XGKick happen few cycles in future, on PS3 is done instant. Fixed by config 0x07 which delay XGKick by selected value || WRC series, Wakeboarding Unleashed, TriAce games, World of Outlaws - Sprint Cars, Ty - The Tazmanian Tiger, dot Hack - G.U. series, and more
|-
| COP2 instructions are instant || Some games rely on fact that COP2 operations can take some time, on PS3 emulators they are done instantly due to lack of correctly emulated pipeline Patched by rearranging mips code || FFX, FFX-2, Ghost in The Shell SAC, Ace Combat series, Sprint Cars 1/2, Black, Run Like Hell, Everblue 2, Dragon Quest - Shounen Yangus no Fushigi na Daibouken, and many more
|-
| VU0 is not running in sync with EE core || Seems like old pcsx2 mVU approach is used where VU0 is running thousands of cycles ahead of EE. Partially resolved on emu using 0x12 command with 2/3 subcommands.  || 24 The Game, ATV Quad Power Racing 2, Twisted Metal Head-On, Primal, Ghosthunter, Rayman Arena, Rayman 3, All games using M-bit. 
|-
| M-Bit not supported || Emulator ignore VU0 M-Bit, that cause issues for games that need it to work correctly. This is done because there is no way to sync correctly running VU0 without sync with EE. Partially resolved on emu using 0x12 command with 2/3 subcommands. || Totally Spies! Totally Party, Mike Tyson Heavyweight Boxing, My Street, Crash Twinsanity, Marvel Nemesis, Panzer Elite Action - Fields of Glory, TriAce games (speed optimizations only), Super Monkey Ball Adventure, most Eko Software games, and many more.
|-
| Emulator Fail to save correct flag instances while ending VU0 program on Ebit || This cause few games to read bad flag status (not status flag!) on COP2. This is resolved on emu by forcing update of MAC flag on every STATUS flag read (by config 0x12), this cause slowdowns creating a lot of unnesessary operations. || Driving Emotion Type-S, State of Emergency 2, The Getaway Black Monday.
|-
| Not updated status flag when VDIV/VSQRT/VRSQRT is done on COP2 || Potential bad flag state can cause a lot of issues that are not related on first sight || Yanya Caballista (already patched by custom config)
|-
| In corner cases emu select wrong block pipeline state while processing Flag VU opcodes. || This can cause various issues, mostly SPS, missing graphic, specific slowdowns, etc. For now it was only confirmed that FSAND opcode don't ask for exact pipeline state, but looking at assembly of other opcode this rather affect all of them. || Tales of Legendia, more..
|-
|}

==TitleID/DiscID in ps2_netemu.self==
There are 193 titleIDs listed inside ps2_netemu.self. More precisely, into XPARAM2.ELF file of PS2 Bios included in ps2_netemu.self. XPARAM2.ELF is called by OSDSYS, then ID check is performed. If title ID match to one of included in the table, different IOP emulation settings are applied.
There are internal flags related to every title ID included inside file, still unknown what they do. Also some arguments, in plain text. File in real ps2 is introduced in SCPH-750XX models so exactly when DECKARD Power PC chip exchanged original IOP chip. This can explain why it is still in PS3 netemu bios. Because PS3 it is ppc that can need the same/similar flags.

Original PS2 bios include similar list file called XPARAM.ELF, but Title IDs there are not the same, although some of them exist on both lists.

{| class="wikitable sortable" || 
|- 
! Command !! Name
|-
| 0x00 || TITLE_MASK 
|-
| 0x01 || SIO2_MASK
|-
| 0x02 || DEV9_MASK
|-
| 0x03 || USB_MASK
|-
| 0x04 || SIF_DMA_SYNC
|-
| 0x05 || SIF_DMA_LOAD
|-
| 0x06 || DMAC_CH10_INT_DELAY
|-
| 0x07 || MECHA_RECOGTIME
|-
| 0x08 || CPU_DELAY
|-
| 0x09 || DEV5_INT_SPEED
|-
| 0x0A || CDVD_READ_DELAY
|-
| 0x0B || SPU2_BEHAVIOR
|-
|}

{| class="wikitable sortable" || 
|- 
! ID !! Title !! Command !! Value !! Remarks 
|- 
|PBPX_952.01 || DVD Utility Disc Version 1.00                                        || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.02 || DVD Utility Disc Version 1.01                                        || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.03 || DVD Utility Disc Version 1.01                                        || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.06 || DVD Player (Version 2.01)                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.07 || DVD Player (Version 2.10)                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.08 || DVD Player (Version 2.10)                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.09 || DVD Player (Version 2.10)                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.10 || DVD Utility Disc Version 2.10                                        || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.11 || DVD Utility Disc Version 1.00                                        || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.21 || DVD Player (Version 2.12)                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.22 || DVD Player (Version 2.14)                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.24 || DVD Player (Version 2.16)                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.28 ||                                                                      || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.35 ||                                                                      || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_952.39 || Online Start Up Disc v3.0                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_955.01 || Linux for PS2 Beta Release 1                                         || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_955.07 || Playstation 2 Linux Runtime Environment v1.0 (Disc 1)                || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_955.09 || Linux for PS2 Release 1.0                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PBPX_955.18 ||                                                                      || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PDPX_991.09 || DVD Player (Version 3.04)                                            || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PSXC_002.01 || PSX Update Disc 1.10                                                 || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PSXC_002.02 || PSX Update Disc 1.20                                                 || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PSXC_002.03 || PSX Update Disc 1.31                                                 || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|PTPX_970.38 ||                                                                      || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SCAJ_201.25 || Tekken 5                                                             || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SCAJ_201.26 || Tekken 5                                                             || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SCES_532.02 || Tekken 5                                                             || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SCKA_200.49 || Tekken 5                                                             || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SCPM_621.15 ||                                                                      || 0x00 ||  0x1000000 || TITLE_MASK
|-
|SCPM_621.16 ||                                                                      || 0x00 ||  0x1000000 || TITLE_MASK
|-
|SCPN_601.01 || PlayStation BB Navigator (Version 0.10)                              || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SCPN_601.30 || PlayStation BB Navigator (Version 0.20)                              || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SCPN_601.40 || PlayStation BB Navigator (Version 0.30)                              || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SCPN_601.50 || PlayStation BB Navigator (Version 0.31)                              || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SCPN_601.60 || PlayStation BB Navigator (Version 0.32)                              || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SCPS_110.01 || I.Q. Remix                                                           || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SCPS_110.10 || Yoake no Mariko (Performance Pack Edition)                           || 0x01 ||     0x1800 || SIO2_MASK
|-
|SCPS_110.18 || Yoake no Mariko                                                      || 0x01 ||     0x1800 || SIO2_MASK
|-
|SCPS_110.21 || Yoake no Mariko 2nd Act (Limited Edition)                            || 0x01 ||     0x1800 || SIO2_MASK
|-
|SCPS_110.22 || Yoake no Mariko 2nd Act                                              || 0x01 ||     0x1800 || SIO2_MASK
|-
|SCPS_150.38 || Lifeline                                                             || 0x0A ||    0x80300 || CDVD_READ_DELAY
|-
|SCPS_150.39 || Lifeline                                                             || 0x0A ||    0x80300 || CDVD_READ_DELAY
|-
|SCPS_170.01 || Gran Turismo 4                                                       || 0x0B || 0x10000000 || SPU2_BEHAVIOR
|-
|SCPS_175.01 || Linux (for PlayStation2) Release 1.0                                 || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SCPS_200.39 ||                                                                      || 0x00 ||  0x4000000 || TITLE_MASK
|-
|SCUS_971.67 || PaRappa the Rapper 2                                                 || 0x04 ||     0x2000 || SIF_DMA_SYNC
|-
|SCUS_972.69 || Final Fantasy XI [Disc 2]                                            || 0x02 ||        0xB || DEV9_MASK
|-
|SLES_500.48 || Donald Duck: Quack Attack                                            || 0x01 ||      0x800 || SIO2_MASK
|-
|SLES_500.62 || Orphen: Scion of Sorcery                                             || 0x08 ||      0xC1C || CPU_DELAY
|-
|SLES_503.64 || City Crisis                                                          || 0x0A ||    0x80BB8 || CDVD_READ_DELAY
|-
|SLES_504.46 || Shadow Man 2: The Second Coming                                      || 0x0A ||    0x80600 || CDVD_READ_DELAY
|-
|SLES_505.40 || Simpsons: Road Rage                                                  || 0x01 ||      0x800 || SIO2_MASK
|-
|SLES_506.08 || Shadow Man 2: The Second Coming                                      || 0x0A ||    0x80600 || CDVD_READ_DELAY
|-
|SLES_506.28 || Simpsons: Road Rage                                                  || 0x01 ||      0x800 || SIO2_MASK
|-
|SLES_507.28 || Tiger Woods PGA Tour 2002                                            || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLES_507.29 ||                                                                      || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLES_512.82 || Tiger Woods PGA Tour 2003                                            || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLES_514.79 || Def Jam Vendetta                                                     || 0x01 ||      0x802 || SIO2_MASK
|-
|SLES_518.41 || SpyHunter 2                                                          || 0x01 ||      0x800 || SIO2_MASK
|-
|SLES_518.44 || Time Crisis 3                                                        || 0x01 ||      0x800 || SIO2_MASK
|-
|SLES_519.97 || SWAT: Global Strike Team                                             || 0x01 ||      0x800 || SIO2_MASK
|-
|SLES_520.97 || SWAT: Global Strike Force                                            || 0x01 ||      0x800 || SIO2_MASK
|-
|SLES_530.37 || Super Monkey Ball Deluxe                                             || 0x01 ||      0x802 || SIO2_MASK
|-
|SLES_536.68 || Micro Machines v4                                                    || 0x01 ||      0x801 || SIO2_MASK
|-
|SLES_537.55 || Castlevania: Curse of Darkness                                       || 0x04 ||       0x10 || SIF_DMA_SYNC
|-
|SLES_537.96 || FIFA Street 2                                                        || 0x01 ||     0x1800 || SIO2_MASK
|-
|SLPM_620.42 || Kurogane no Houkou: Warship Commander                                || 0x01 ||     0x3000 || SIO2_MASK
|-
|SLPM_620.62 || Gitaroo Man One                                                      || 0x0A ||    0x80540 || CDVD_READ_DELAY
|-
|SLPM_621.05 || Taikou Risshiden IV                                                  || 0x09 || 0x2B47000A || DEV5_INT_SPEED
|-
|SLPM_621.24 || Ready 2 Rumble Boxing: Round 2                                       || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_621.25 || Gauntlet: Dark Legacy                                                || 0x08 ||      0xC1C || CPU_DELAY
|-
|SLPM_621.25 || Gauntlet: Dark Legacy                                                || 0x09 || 0x2B470005 || DEV5_INT_SPEED
|-
|SLPM_621.35 || Final Fantasy: XI (Beta Version)                                     || 0x00 || 0xA0000000 || TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
|-
|SLPM_621.54 || DDRMAX Dance Dance Revolution 6thMix                                 || 0x08 ||     0x1A5E || CPU_DELAY
|-
|SLPM_622.39 || Supercar Street Challenge                                            || 0x0A ||    0x80300 || CDVD_READ_DELAY
|-
|SLPM_623.69 || Karaoke Revolution: J-Pop Vol.1                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_623.79 || Karaoke Revolution: J-Pop Vol.2                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_623.80 || Karaoke Revolution: J-Pop Vol.3                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_623.81 || Karaoke Revolution: J-Pop Vol.4                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_623.82 || Karaoke Revolution: Love & Ballad                                    || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_623.83 || Karaoke Revolution: Night Selection 2003                             || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.14 || Karaoke Revolution: Dreams & Memories                                || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.37 || Suisui Sweet: Amai Ai no Mitsukekata                                 || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SLPM_624.50 || Karaoke Revolution: Anime Song Selection                             || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.51 || Karaoke Revolution: J-Pop Vol.5                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.54 || Karaoke Revolution: J-Pop Vol.6                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.55 || Karaoke Revolution: J-Pop Vol.7                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.56 || Karaoke Revolution: J-Pop Vol.8                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.57 || Karaoke Revolution: Snow & Party                                     || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.64 || Pop'n Taisen Pazurudame Online                                       || 0x08 ||     0x1F40 || CPU_DELAY
|-
|SLPM_624.79 || Karaoke Revolution: J-Pop Vol.9                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_624.91 || Mega Man: The Power Battle                                           || 0x04 ||     0x2000 || SIF_DMA_SYNC
|-
|SLPM_624.92 || Karaoke Revolution: Kids Song Selection                              || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_625.28 || Karaoke Revolution: Kazoku Idol Sengen (Bundle Edition)              || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_625.29 || Karaoke Revolution: Kazoku Idol Sengen                               || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_650.86 || A Visual Mix: Ayumi Hamasaki Dome Tour 2001 (Disc 1)                 || 0x08 ||     0x1450 || CPU_DELAY
|-
|SLPM_650.87 || A Visual Mix: Ayumi Hamasaki Dome Tour 2001 (Disc 2)                 || 0x08 ||     0x1450 || CPU_DELAY
|-
|SLPM_650.90 || Spy Hunter                                                           || 0x01 ||     0x1800 || SIO2_MASK
|-
|SLPM_651.97 || Nobunaga's Ambition Online                                           || 0x02 ||        0xB || DEV9_MASK
|-
|SLPM_652.09 || Star Ocean: Till the End of Time                                     || 0x0B ||    0x20014 || SPU2_BEHAVIOR
|-
|SLPM_654.38 || Star Ocean: Till the End of Time (Director's Cut) (Disc 1)           || 0x0B ||    0x20014 || SPU2_BEHAVIOR
|-
|SLPM_654.39 || Star Ocean: Till the End of Time (Director's Cut) (Disc 2)           || 0x0B ||    0x20014 || SPU2_BEHAVIOR
|-
|SLPM_654.88 || Grand Theft Auto: Vice City                                          || 0x0A ||      0x300 || CDVD_READ_DELAY
|-
|SLPM_654.88 || Grand Theft Auto: Vice City                                          || 0x09 || 0x36000200 || DEV5_INT_SPEED
|-
|SLPM_656.33 || I Love Baseball: Pro Yakyu wo Koyonaku                               || 0x08 ||      0xFA0 || CPU_DELAY
|-
|SLPM_656.98 || Love Songs: ADV Futaba Riho 14-sai Natsu                             || 0x0A ||    0x80380 || CDVD_READ_DELAY
|-
|SLPM_657.05 || Final Fantasy XI: Chains of Promathia (Expansion Disc)               || 0x02 ||        0xB || DEV9_MASK
|-
|SLPM_657.06 || Final Fantasy XI: Chains of Promathia (All-In-One Edition)           || 0x02 ||        0xB || DEV9_MASK
|-
|SLPM_657.19 || Burnout 3: Takedown                                                  || 0x01 ||     0x1C00 || SIO2_MASK
|-
|SLPM_657.83 || Nobunaga no Yabou Online: Tappi no Shou                              || 0x02 ||        0xB || DEV9_MASK
|-
|SLPM_658.94 || Winning Post 6: 2005 Version                                         || 0x01 ||     0x2400 || SIO2_MASK
|-
|SLPM_659.34 || Maple Colors                                                         || 0x0A ||    0x80300 || CDVD_READ_DELAY
|-
|SLPM_659.53 || Final Fantasy: XI (Entry Disc 2005)                                  || 0x02 ||        0xB || DEV9_MASK
|-
|SLPM_659.84 || Grand Theft Auto: San Andreas                                        || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLPM_660.33 || The Sword of Etheria                                                 || 0x08 ||      0xC1C || CPU_DELAY
|-
|SLPM_660.33 || The Sword of Etheria                                                 || 0x00 ||  0x2000000 || TITLE_MASK
|-
|SLPM_660.48 || The Sword of Etheria                                                 || 0x08 ||      0xC1C || CPU_DELAY
|-
|SLPM_660.48 || The Sword of Etheria                                                 || 0x00 ||  0x2000000 || TITLE_MASK
|-
|SLPM_660.57 || Taito Memories Vol.1                                                 || 0x08 ||      0xCE4 || CPU_DELAY
|-
|SLPM_661.56 || Marheaven: Arm Fight Dream                                           || 0x01 ||     0x1800 || SIO2_MASK
|-
|SLPM_661.75 || Akumajo Dracula: Yami no Juin                                        || 0x08 ||       0x60 || CPU_DELAY
|-
|SLPM_661.75 || Akumajo Dracula: Yami no Juin                                        || 0x0B ||    0x2001C || SPU2_BEHAVIOR
|-
|SLPM_663.93 || Final Fantasy XI: Treasures of Aht Urhgan (All-In-One Edition)       || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLPM_663.93 || Final Fantasy XI: Treasures of Aht Urhgan (All-In-One Edition)       || 0x09 || 0x2B47000A || DEV5_INT_SPEED
|-
|SLPM_663.93 || Final Fantasy XI: Treasures of Aht Urhgan (All-In-One Edition)       || 0x02 ||        0xB || DEV9_MASK
|-
|SLPM_663.94 || Final Fantasy XI: Treasures of Aht Urhgan                            || 0x02 ||        0xB || DEV9_MASK
|-
|SLPM_664.36 || Aria the Natural                                                     || 0x01 ||     0x1800 || SIO2_MASK
|-
|SLPM_664.36 || Aria the Natural                                                     || 0x00 ||  0xA000000 || TITLE_MASK
|-
|SLPM_665.39 || Nobunaga no Yabou Online: Haten no Shou                              || 0x02 ||        0xB || DEV9_MASK
|-
|SLPM_665.58 || Tomb Raider: Legend                                                  || 0x08 ||      0x3E8 || CPU_DELAY
|-
|SLPM_665.74 || Detective Evangelion                                                 || 0x00 ||  0x2000000 || TITLE_MASK
|-
|SLPM_680.07 || Karaoke Revolution (Trial)                                           || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPM_680.10 ||                                                                      || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPS_200.08 || Morita Shogi                                                         || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLPS_200.20 || FIFA 2000 World Championship                                         || 0x04 ||     0x2001 || SIF_DMA_SYNC
|-
|SLPS_200.37 || Go Go Golf                                                           || 0x09 || 0x2B47000A || DEV5_INT_SPEED
|-
|SLPS_200.38 || Grappler Baki: Baki Saidai no Tournament                             || 0x08 ||     0x1194 || CPU_DELAY
|-
|SLPS_200.53 || Tenshi no Present: Marle Oukoku Monogatari (Limited Edition)         || 0x0B || 0x20000000 || SPU2_BEHAVIOR
|-
|SLPS_200.66 || Tenshi no Present: Marle Oukoku Monogatari                           || 0x0B || 0x20000000 || SPU2_BEHAVIOR
|-
|SLPS_201.01 || City Crisis                                                          || 0x0A ||    0x80BB8 || CDVD_READ_DELAY
|-
|SLPS_201.11 || Magical Sports Pro Baseball 2001                                     || 0x09 || 0x2B47000A || DEV5_INT_SPEED
|-
|SLPS_201.72 || Koushien: Konpeki no Sora                                            || 0x09 || 0x2B47000A || DEV5_INT_SPEED
|-
|SLPS_201.73 || Hard Hitter 2                                                        || 0x0A ||    0x80300 || CDVD_READ_DELAY
|-
|SLPS_201.97 || Surfing Air Show with RatBoy                                         || 0x09 || 0x2B47000A || DEV5_INT_SPEED
|-
|SLPS_201.99 || F1 2002                                                              || 0x0B ||    0x20005 || SPU2_BEHAVIOR
|-
|SLPS_202.00 || Final Fantasy XI                                                     || 0x02 ||        0xB || DEV9_MASK
|-
|SLPS_204.04 || Rakushou! Pachi-Slot Sengen 2                                        || 0x0A ||    0x80300 || CDVD_READ_DELAY
|-
|SLPS_204.29 || Hissatsu Pachi-Slot Evolution: Ninja Hattori-Kun V                   || 0x08 ||     0x1B58 || CPU_DELAY
|-
|SLPS_204.55 || Simple 2000 Series Vol.94: The Aka-Champion - Come on Baby           || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SLPS_250.08 || Sorcerous Stabber Orphen                                             || 0x08 ||      0xC1C || CPU_DELAY
|-
|SLPS_250.71 || A Visual Mix: Ayumi Hamasaki Dome Tour 2001                          || 0x08 ||     0x1450 || CPU_DELAY
|-
|SLPS_250.72 || A Visual Mix: Ayumi Hamasaki Dome Tour 2001                          || 0x08 ||     0x1450 || CPU_DELAY
|-
|SLPS_250.81 || Saishuu Densha                                                       || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLPS_251.36 || Kuon no Kizuna Sairin Mikotonori                                     || 0x0A ||    0x805DC || CDVD_READ_DELAY
|-
|SLPS_251.42 || Tiger Woods PGA Tour 2002                                            || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLPS_251.50 || Only You                                                             || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SLPS_252.37 || Only You                                                             || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SLPS_252.75 || Def Jam: Vendetta                                                    || 0x01 ||      0x802 || SIO2_MASK
|-
|SLPS_252.78 || Memories Off: Mix                                                    || 0x0A ||    0x80300 || CDVD_READ_DELAY
|-
|SLPS_252.90 || Time Crisis 3                                                        || 0x01 ||      0x800 || SIO2_MASK
|-
|SLPS_253.15 || One Piece: Grand Battle 3                                            || 0x01 ||     0x1800 || SIO2_MASK
|-
|SLPS_253.57 || 3-Nen B-Gumi Kinpachi Sensei: Densetsu no Kyoudan ni Tate!           || 0x01 ||     0x1800 || SIO2_MASK
|-
|SLPS_253.79 || Tokyo Majin Gakuen: Kaihoujyou Kefurokou                             || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLPS_254.06 || Hitman: Contracts                                                    || 0x08 ||      0xDAC || CPU_DELAY
|-
|SLPS_254.18 || Ace Combat 5: The Unsung War                                         || 0x0A ||   0x500000 || CDVD_READ_DELAY
|-
|SLPS_255.10 || Tekken 5                                                             || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SLPS_255.85 || Monster Farm 5: Circus Caravan                                       || 0x07 ||          5 || MECHA_RECOGTIME
|-
|SLPS_255.86 || Tales of the Abyss                                                   || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLPS_256.04 || Ar tonelico Qoga: Knell of Ar Ciel                                   || 0x00 ||  0xA000000 || TITLE_MASK
|-
|SLPS_256.67 || Daito Giken Premium Pachi-Slot Collection: Yoshimune                 || 0x01 ||     0x1800 || SIO2_MASK
|-
|SLPS_256.98 || Fatal Fury Battle Archives Volume 2                                  || 0x00 ||  0xA000000 || TITLE_MASK
|-
|SLPS_257.08 || The Familiar of Zero (Limited Edition)                               || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLPS_257.09 || The Familiar of Zero                                                 || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLPS_257.21 || HimeHibi - Princess Days                                             || 0x0B ||  0x8000000 || SPU2_BEHAVIOR
|-
|SLPS_257.22 || Routes PE (Limited Edition)                                          || 0x08 ||      0x3E8 || CPU_DELAY
|-
|SLPS_257.27 || Routes PE                                                            || 0x08 ||      0x3E8 || CPU_DELAY
|-
|SLPS_732.49 || Ar tonelico Qoga: Knell of Ar Ciel (Platinum)                        || 0x00 ||  0xA000000 || TITLE_MASK
|-
|SLUS_200.11 || Orphen: Ocion of Sorcery                                             || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLUS_200.11 || Orphen: Ocion of Sorcery                                             || 0x09 ||  0x8000010 || DEV5_INT_SPEED
|-
|SLUS_200.77 || Donald Duck: Go'in Quackers                                          || 0x01 ||      0x800 || SIO2_MASK
|-
|SLUS_202.74 || City Crisis                                                          || 0x0A ||    0x80BB8 || CDVD_READ_DELAY
|-
|SLUS_203.05 || Simpsons: Road Rage                                                  || 0x01 ||      0x800 || SIO2_MASK
|-
|SLUS_203.64 || Tiger Woods PGA Tour 2002                                            || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLUS_204.13 || Shadowman 2                                                          || 0x0A ||    0x80600 || CDVD_READ_DELAY
|-
|SLUS_204.33 || SWAT: Global Strike Team                                             || 0x01 ||      0x800 || SIO2_MASK
|-
|SLUS_204.88 || Star Ocean: Til the end of Time [Disc 1]                             || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLUS_205.72 || Tiger Woods PGA Tour 2003                                            || 0x0A ||    0x803E8 || CDVD_READ_DELAY
|-
|SLUS_205.90 || Spyhunter 2                                                          || 0x01 ||      0x800 || SIO2_MASK
|-
|SLUS_206.35 || Muppets Party Cruise                                                 || 0x01 ||      0x801 || SIO2_MASK
|-
|SLUS_206.39 || Def Jam Vendetta                                                     || 0x01 ||      0x800 || SIO2_MASK
|-
|SLUS_206.86 || Splashdown: Rides Gone Wild                                          || 0x0A ||    0x80400 || CDVD_READ_DELAY
|-
|SLUS_208.38 || All-Star Baseball 2005                                               || 0x01 ||      0x802 || SIO2_MASK
|-
|SLUS_208.51 || Ace Combat 5: The Unsung War                                         || 0x0A ||   0x500000 || CDVD_READ_DELAY
|-
|SLUS_208.91 || Star Ocean: Til the end of Time [Disc 2]                             || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLUS_209.18 || Super Monkey Ball: Deluxe                                            || 0x01 ||      0x800 || SIO2_MASK
|-
|SLUS_210.59 || Tekken 5                                                             || 0x0B || 0x40000000 || SPU2_BEHAVIOR
|-
|SLUS_210.70 || Final Fantasy XI: Chains of Promathia                                || 0x02 ||        0xB || DEV9_MASK
|-
|SLUS_210.89 || Karaoke Revolution Vol.3                                             || 0x08 ||     0x1388 || CPU_DELAY
|-
|SLUS_213.31 || Sonic Riders                                                         || 0x01 ||      0x800 || SIO2_MASK
|-
|SLUS_213.39 || Puzzle Challenge                                                     || 0x01 ||      0x800 || SIO2_MASK
|-
|SLUS_214.04 || Final Fantasy XI: Treasures of Aht Urhgan                            || 0x02 ||        0xB || DEV9_MASK
|-
|SLUS_214.52 || Valkyrie Profile 2: Silmeria                                         || 0x08 ||     0x1388 || CPU_DELAY
|- 
|}

==Other game patches (unofficial)==
There are other unofficial ways to patch the PS2 games such the [https://forums.pcsx2.net/Thread-A-simplistic-guide-to-pnach-files-aka-pnach-for-dummies pnach] format, or the widescreen patches that allows 16:9 screen output for some games by hex editing the ISO, or by applying ppf patches. Games work fine on PS3 with same compatibility like before patching. Also some 480p (aka progressive scan) patches work fine. http://ps2wide.net/

The problem of this methods is the patch is applyed over the ISO and is modifyed permanently, but this problem can be avoided in PS3 because that unofficial patches can be "ported" to the official config format to be used by ps2_netemu.self, by using the official config format the settings and patchs from the config file are applyed "on the fly" and the ISO is not modifyed

==ps2_title_brute code==

A script to calculate whatever this encode is that is used in ps2emu, gxemu and softemu from given input title id.

It contains code for bruting as well. Just call gen_sum with the title id in a specific format to get it.

<syntaxhighlight lang="python">
title_ = "SLUS_200.73"

#patches = [0x6b1ade00dL, 0x23d92589c5L, 0x24d92589d5L, 0x608634992dL, 0x5ca15df14dL]
#patches = [0x37ae1cb18dL, 0x608634999dL, 0x06b1ade00dL, 0x5fc674d915L, 0x178e3c9165L, 0x3889349935L,0x18fe4ce145L,0xc126943985,0xe90ebc11b5,0x58be0ca165L]
patches = [ 0xCD1298155L, 0x12C93199A5L, 0x15C93199ADL, 0x24D92589A5L, 0x2CD12D8125L, 0x34C9359935L, 0x34C93599E5L, 0x34C93599E5L, 0x449961C9E5L, 0x4C9169C1CDL, 0x4C9169C1D5L, 0x4C9169C1DDL, 0x4C9169C1E5L, 0x4C9169C1F5L, 0x4C9169C1FDL, 0x4CB14DE12DL, 0x54A955F915L, 0x5CA15DF165L, 0x5CA15DF1FDL, 0x5CA15DF1FDL, 0x649965C94DL, 0x649965C955L, 0x649965C95DL, 0x649965C965L, 0x649965C96DL, 0x6BB149E15DL, 0x6C916DC165L, 0x6C916DC1A5L, 0x6C916DC1ADL, 0x6C916DC1B5L, 0x6C916DC1D5L, 0x6C916DC1DDL, 0x748975D9DDL, 0x7C817DD125L, 0x7C817DD165L, 0x7C817DD16DL, 0x7C817DD175L, 0x7C817DD1CDL, 0x84798529BDL, 0x8559A109ADL, 0x8579852915L, 0x8579852965L, 0x8D51A90145L, 0x8D51A901B5L, 0x8D51A901BDL, 0x8D718D21BDL, 0x9C619D31E5L, 0x9D41B911ADL, 0x9D619D31C5L, 0x9F29357805L, 0x9F293578E5L, 0xB549B51915L, 0xB549B51925L, 0xB549B5195DL, 0xB549B519A5L, 0xB549B519ADL, 0xBC61793025L, 0xBD41BD1105L, 0xC439C569F5L, 0xC7716D20D5L, 0xC7716D20D5L, 0xCA11E941F5L, 0xCF7965285DL, 0xCF7965285DL, 0xD20911582DL, 0xD7617D308DL, 0xE339C1695DL, 0xE794CCB06DL, 0xEA3129608DL, 0xEC11ED4115L, 0xEF594508D5L, 0xF409F559ADL, 0xF7415D10E5L, 0xF7415D10E5L]

def gen_sum(title):
        var_30 = []
        for i in range(0x1A):
                var_30.append(0)
        r9=5
        r31=0
        #Title 2 decimal
        while r9 != 0xB:
                r11 = r9 + 1
                if r9 == 8:
                        pass
                else:
                        r5 = ord(title[r9:r9+1])
                        r7 = r31 * 0xA
                        r6 = r7 & 0xFFFFFFFF
                        r4 = r5 + r6
                        r9 = r4 - 0x30
                        r31 = r9 & 0xFFFFFFFF
                r9 = r11
        #print r31
        r10 = ord(title[3:4]) # S
        r7 = (r31 >> 10) & 0x7F
        r11 = ord(title[1:2]) # L
        r8 = ord(title[2:3])  # U
        r6 = (r10 >> 1) & 0x3F
        r12 = ord(title[0:1]) # S
        r4 = (r11 >> 3) & 0xF
        r5 = (r8 >> 2) & 0x1F
        r3 = (r12 >> 4) & 7
        r9 = r10 << 7
        r0 = r8 << 6
        r10 = r11 << 5
        r8 = r12 << 4
        r12 = r31 << 3
        r11 = r10 | r5
        r9 = r9 | r7
        r0 = r0 | r6
        var_30[2] = r11 & 0xFF
        r7 = r8 | r4
        var_30[0] = (r9 & 0xFF)
        r10 = r12 | r3
        var_30[1] = (r0 & 0xFF)
        r12 = (r31 >> 2) & 0x3FFFFFF8
        var_30[3] = (r7 & 0xFF)
        r8 = 5
        var_30[4] = (r10 & 0xFF)
        var_30[0x19] = (r12 & 0xFF)
        var_30[0x18] = (r8 & 0xFF)
        var_30 = [int(v) for v in var_30]
        #print [hex(v) for v in var_30]
        r5 = var_30
        r6 = 0
        r4 = 0
        while r6 < 5:
                r12 = r5[r6:r6+1][0]
                r7 = r6 + 1
                r0 = var_30[0x19]
                r3 = r6 + 0x10
                r9 = r12 ^ r0
                r31 = r3
                r5[r6] = r9
                r6 = r7
                r5[r31] = r4
        #print [hex(v) for v in r5]
        r9 = 0
        r10 = 0
        while r10 < 5:
                r11 = r10 + 1
                r6 = r5[r10:r10+1][0]
                r4 = r9 << 8
                r10 = r11
                r9 = r4 | r6
        return r9
'''
print hex(gen_sum(title_))

a1='A'
a2='A'
a3='A'
a4='A'
while a1 <= 'Z':
        a2='A'
        a3='A'
        a4='A'
        while a2 <= 'Z':
                a3='A'
                a4='A'
                while a3 <= 'Z':
                        a4='A'
                        while a4 <= 'Z':
                                #print "%s%s%s%s" % (a1,a2,a3,a4)
                                for i in range(99999):
                                        t = "%s%s%s%s_" % (a1,a2,a3,a4) + '{4}{3}{2}.{1}{0}'.format(i%10,(i/10)%10,(i/100)%10,(i/1000)%10,(i/10000)%10)
                                        if gen_sum(t) in patches:
                                                print t
                                                print True
                                a4=chr(ord(a4)+1)
                                print "%s%s%s%s" % (a1,a2,a3,a4)
                        a3=chr(ord(a3)+1)
                        print "%s%s%s%s" % (a1,a2,a3,a4)
                a2=chr(ord(a2)+1)
        a1=chr(ord(a1)+1)
'''

print hex(gen_sum("SLUS_213.86"))
'''
for i in range(99999):
        t = "SLUS_" + '{4}{3}{2}.{1}{0}'.format(i%10,(i/10)%10,(i/100)%10,(i/1000)%10,(i/10000)%10)
        if gen_sum(t) in patches:
                print "%s %x" % (t, gen_sum(t))

'''
</syntaxhighlight>


==External References==
* [http://www.eurogamer.net/articles/digitalfoundry-vs-ps2-classics-on-ps3 Digital Foundry vs. PS2 Classics on PS3]
* [http://www.ps3hax.net/showthread.php?t=53444 PS2 Classics Algorithm By flatz]
* [https://web.archive.org/web/20140422030433/http://gitorious.ps3dev.net/ps2classic C port]
* [https://web.archive.org/web/20150623164110/http://www.pshomebrew.net/wiki/PS2_Classics_Emulator_Compatibility_List Alternative Compatibility List (outdated)]
* [http://www.ps3hax.net/showthread.php?p=620747#post620747 How to properly convert Final Fantasy XII: IZJS For ps2classics]
* [https://en.wikipedia.org/wiki/List_of_PlayStation_2_Classics Wikipedia list of officially released PS2 Classics]
<br>
CPU-GPU intensive games + games only playable in software render on PCSX2:
* http://wiki.pcsx2.net/index.php/Category:GPU_intensive_games
* http://wiki.pcsx2.net/index.php/Category:CPU_intensive_games
* http://wiki.pcsx2.net/index.php/Category:Software_rendering_only_games

{{Reverse engineering}}<noinclude>[[Category:Main]]</noinclude>