Editing Talk:PS1 Emulation

Jump to navigation Jump to search
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.

Latest revision Your text
Line 185: Line 185:
  0xE13C4 replace 60 00 00 00 to 38 60 00 00
  0xE13C4 replace 60 00 00 00 to 38 60 00 00


==== GTE Automatic Widescreen Hack ====
== Commands Info ==
Automatic widescreen without per game patches. Work only for 3D elements (like 95% of available widescreen patches).<br>
Tested on both RPCS3 and real PS3 (CFW only, but can be added to hen).<br>
ps1_netemu.elf 4.86 - 4.91 offsets in raw hex (for Hxd, etc.)
0x2BDA4 original code:
    7C 69 1B 78 3C 60 80 54 2F 89 00 00 60 63 00 10
    40 9E 00 14 3C 60 80 54 60 63 00 02 7C 63 07 B4
    4E 80 00 20 A0 09 00 02 2F 80 00 00 41 9E FF F0
    C0 02 A3 D8 FF 81 00 00 41 9D FF DC C0 02 A3 DC
    38 60 00 00 FF 81 00 00 41 9C FF CC D0 29 00 6C
    4B FF FF CC
replace to:
    78 C0 F8 42 78 C6 F0 82 7C C6 02 14 7D 08 32 14
    48 0C 47 7E 78 E9 F8 42 78 E7 F0 82 7C E9 3A 14
    7C C6 3A 14 48 0C 65 66 79 00 F8 42 79 08 F0 82
    7D 08 02 14 7C C6 42 14 48 0C 69 0A 79 00 F8 42
    79 08 F0 82 7D 08 02 14 7C C6 42 14 48 0C 6C 6A
    60 00 00 00
0xB4778  original code: 7D 08 32 14 replace to: 48 03 BD A6
0xB6560  original code: 7C C6 3A 14 replace to: 48 03 BD BA
0xB6904  original code: 7C C6 42 14 replace to: 48 03 BD CE
0xB6C64  original code: 7C C6 42 14 replace to: 48 03 BD E2
 
== Ps1_netemu Commands Info ==


=== External Configs ===
=== External Configs ===


Loading external commands is be possible in ps1_netemu. From this we can also figure out that sony call those configs "ad hoc params" which can be little bit misleading. Emulator expect them inside ISO.BIN.EDAT file. Offset depend if "optional header" exist or not. Values are little endian.
Loading external commands is be possible in ps1_netemu. From this we can also figure out that sony call those configs "ad hoc params" which can be little bit misleading. Emulator expect them inside ISO.BIN.EDAT file. Offset depend if "optional header" exist or not. Values are little endian.
The offsets below are the offsets from the start of the PSISOIMG section. This data starts at absolute file offset 0x424 for single disk games that do not use a PSTITLEIMG section. For games that do have a PSTITLEIMG section, the absolute offset will be shifted by 0x400 bytes, i.e. to offset 0x824 and similar.
* Offset 0x424 or 0x824 in DAT file = Config revision in bcd format, that need to be higher than DB from emu (11624 for 4.86). Safe to use 0x200000.
* Offset 0x424 Config revision in bcd format, that need to be higher than DB from emu (11624 for 4.86). Safe to use 0x200000.
* Offset 0x42C or 0x82C first config command
* Offset 0x42C first config command
* Offset 0x430 or 0x830 param for first command
* Offset 0x430 param for first command
* This repeats 8 times as only 8 commands is supported.  
* This repeats 8 times as only 8 commands is supported.  
* Command 2 is unsupported.
* Command 2 is unsupported.
Line 267: Line 242:
**0 = ? (used by SCPS-18011 Um Jammer Lammy, and SLPS-01818 Langrisser IV & V Final Edition [Disc1of2])
**0 = ? (used by SCPS-18011 Um Jammer Lammy, and SLPS-01818 Langrisser IV & V Final Edition [Disc1of2])
In Um Jammer Lammy is used together with command 0x13, so it was a bit doubtful if it was a mistake. But Langrisser IV & V Final Edition [Disc1of2] uses it too and is the only command used by this disc, so it "should" do something. Um Jammer Lammy in netemu 3.40 was fixed only with command 0x0/0x0 (id/data)
In Um Jammer Lammy is used together with command 0x13, so it was a bit doubtful if it was a mistake. But Langrisser IV & V Final Edition [Disc1of2] uses it too and is the only command used by this disc, so it "should" do something. Um Jammer Lammy in netemu 3.40 was fixed only with command 0x0/0x0 (id/data)
*Um Jammer Lammy (SCPS-18011) uses somewhat new external config revision (11580) in official classic's external config, but only uses command 0x13. Keep in mind the game was released Febuary 27, 2008, so package was possibly updated with new config at some point, and then in internal table, so maybe it once had a different config command in config table and 0x00 nullified it. Langrisser IV (SLPS-01818) has old config revision (5713) and uses command 0x03 set to 0x3E8, so just default. Maybe internal config for Langrisser IV is empty config just to also nullify external config? --[[User:Mrjaredbeta|Mrjaredbeta]] ([[User talk:Mrjaredbeta|talk]]) 03:32, 1 September 2023 (CEST)


=== Command 0x01 (netemu 3.40 up to 4.88) ===
=== Command 0x01 (netemu 3.40 up to 4.88) ===
Line 636: Line 610:
Value is integer that is later converted to double float using fcfid, and truncated to single precision by frsp.<br>
Value is integer that is later converted to double float using fcfid, and truncated to single precision by frsp.<br>
I'm not familiar with CELL floating point unit quirks, but value could be just single precision float from the start, why complicate that so much?<br>
I'm not familiar with CELL floating point unit quirks, but value could be just single precision float from the start, why complicate that so much?<br>
*Possible disc read speed delay or adjustment. Larger value results in slower loading times. --[[User:Mrjaredbeta|Mrjaredbeta]] ([[User talk:Mrjaredbeta|talk]]) 03:21, 1 September 2023 (CEST)
_xcdrom_thread related.
'''Custom Usage:'''
*Param 0x384 (900d) fixes Vampire Hunter D (SLUS-01138) hanging issues.
*Param 0x1F4 (500d) fixes Medievil 2 audio and hanging issues.


=== Command 0x04 (netemu 3.40 up to 4.88) ===
=== Command 0x04 (netemu 3.40 up to 4.88) ===
*Valid values found: 0x4, 0x7, 0x14 (20d), 0x46 (70d), 0x64 (100d), 0xC8 (200d), 0xFFFFFF38 (-200d)
*Valid values found: 0x4, 0x7, 0x14 (20d), 0x46 (70d), 0x64 (100d), 0xC8 (200d), 0xFFFFFF38 (????????)
*Default value: 0
*Default value: 0
*_xcdrom_thread related.
*_xcdrom_thread related.
Possible seek delay/adjustment.<br>
'''Custom Usage:'''
*Param 0x64 and above fixes Transformers: Beast Wars Transmetals (SLUS-01160). 0x14 also gets past initial main menu screen, but hangs when loading into a stage. Param 0xC8 is probably safest.


=== Command 0x05 (netemu 3.40 up to 4.88) ===
=== Command 0x05 (netemu 3.40 up to 4.88) ===
Line 657: Line 625:
*Default value: 0
*Default value: 0
*_xcdrom_thread related.
*_xcdrom_thread related.
'''Custom Usage:'''
*Param 0x01 fixes Shrek Treasure Hunt (SLUS-01463) minigame loading screen hangs.
*Param 0x01 fixes Fear Effect (SLUS-00920) hang when pressing START at menu screen.


=== Command 0x07 (netemu 4.83 up to 4.88) ===
=== Command 0x07 (netemu 4.83 up to 4.88) ===
*Default value: 0
*Default value: 0
*_xcdrom_thread related.
*_xcdrom_thread related.
'''Custom Usage:'''
*Param 0x01 fixes Fear Effect (SLUS-00920) other issues in main menu, such as graphical corruption in options screens, and returning to options screen after viewing credits.


=== Command 0x08 (netemu 3.40 up to 4.88) ===
=== Command 0x08 (netemu 3.40 up to 4.88) ===
Line 703: Line 666:
*Default value: 0
*Default value: 0
*MDEC related?
*MDEC related?
'''Custom Usage:'''
*Param 0x01 fixes Roland Garros French Open 2001 (SLES-03449) hang when loading into a match.
*Param 0x01 fixes Fear Effect (SLUS-00920) hang when pressing START at menu screen (sometimes).


=== Command 0x14 (netemu 4.83 up to 4.88) ===
=== Command 0x14 (netemu 4.83 up to 4.88) ===
Line 715: Line 675:
=== Command 0x16 (netemu 4.83 up to 4.88) ===
=== Command 0x16 (netemu 4.83 up to 4.88) ===
*Default value: 0
*Default value: 0
*DMA timing related.
'''Custom Usage:'''
*Param 0x32 is enough to fix International Superstar Soccer (SLES-02550) black screen after PlayStation logo.
*Param 0x08 is enough to fix Vampire Hunter D’s main menu flashing.


=== Command 0x17 (netemu 4.83 up to 4.88) ===
=== Command 0x17 (netemu 4.83 up to 4.88) ===
Line 776: Line 732:
*Default value: 0x7D0
*Default value: 0x7D0
*xPadThread related.
*xPadThread related.
=== Command 0x20 (netemu 4.83 up to 4.88) ===
GPU multi command (bifield)
*Default value: 0
*0x08 = Always set Vertical Interlace bit in GPUSTAT to 0 on GP1 (08h) command.
*0x40 = Is not exactly known what happen under the hood, but this command allow to play 50Hz titles in 60Hz with correct speed.


=== Command 0x21 (netemu 4.83 up to 4.88) ===
=== Command 0x21 (netemu 4.83 up to 4.88) ===
Line 790: Line 740:
*Default value: 0x3E8
*Default value: 0x3E8
*PS1 GPU related.
*PS1 GPU related.
Seems to fix slowdown in Rapid Racer (SCPS-10060) with value 0x320.


=== Command 0x23 (netemu 4.83 up to 4.88) ===
=== Command 0x23 (netemu 4.83 up to 4.88) ===
Line 819: Line 768:
*Default value: 0
*Default value: 0
*PS1 GPU related.
*PS1 GPU related.
=== Command 0x31 (netemu 4.83 up to 4.88) ===
GPU multi command (bitfield)
*0x02 = Enable Vertical Interlace bit in GP1 (08h) command in SPE writes (in renderer only). Emulator by default use hack where VI bit is ALWAYS disabled in spe.
Note from nocash docs about Vertical Interlace: ''"'''Interlace must be enabled to see all lines in 480-lines mode''' (interlace is causing ugly flickering, so a non-interlaced low resolution image is typically having better quality than a high resolution interlaced image, a pretty bad example are the intro screens shown by the BIOS).''"<br>
This suggest that games which eventually need 0x31, 0x02 will be ones that send GP1 commands with active bit 2(Vertical Resolution 1=480) and 5(Vertical Interlace) at the same time. Otherwise image will be cropped, or badly interlaced. FF8 use this on "Published by..." screen, you can notice weird interlacing when subtitles fade-in without command.


=== Command 0x32 (netemu 4.83 up to 4.88) ===
=== Command 0x32 (netemu 4.83 up to 4.88) ===
Line 852: Line 795:
*Or command 0x2C in ps1_netemu.self 3.40
*Or command 0x2C in ps1_netemu.self 3.40
*Or command 0x2E in ps1_netemu.self 3.55 ?
*Or command 0x2E in ps1_netemu.self 3.55 ?
*Or command 0x15 in ps1_emu.self 4.88 ?
*Valid values found:
*Valid values found:
**0/1/2/3
**0/1/2/3
Line 868: Line 812:
         stay_netemu
         stay_netemu
   
   
  // Boot is considered to be from disc if argv with game path is empty. Which make 0x38 with param 0x01 inaccessible, because there is no way to start disc game with netemu in official way (excluding games that ps1_emu launch with 0x15 cmd to ps1_netemu).
  // boot is considered to be from disc if argv with game path is empty.
 
=== Command 0x3B (netemu 4.83 up to 4.88) ===
PS1 SPU DMA related config. Seems to change some cycles calculation.
*Default value: 0
*Valid values: 0/1
 
== Ps1_emu Commands Info ==
 
=== Command 0x15 (ps1emu 4.83 up to 4.88) ===
*Valid values found:
**3 (launch game using ps1_netemu)
**Different values are ignored


== Ps1_newemu Commands Info ==
=== Orphan commands info ===
 
* 0xE param is divider for 0x204CC00 (psx cpu speed), result is stored on fixed address and used by many functions. <!-- we need to move this note to the new page sections and delete this one originally named "Known ps1emu.self commands" -->
=== Command 0x18 (ps1newemu 4.83 up to 4.88) ===
Supposed to launch game using different emulator, but all paths do nothing.  
*Valid values found:
**3 (Do nothing, but with print! [https://imgflip.com/i/7x4j2p 1])
**Different values do nothing


== Known bugs ==
== Known bugs ==
Please note that all contributions to PS3 Developer wiki are considered to be released under the GNU Free Documentation License 1.2 (see PS3 Developer wiki:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission!

To protect the wiki against automated edit spam, we kindly ask you to solve the following hCaptcha:

Cancel Editing help (opens in new window)
Retrieved from "http://www.psdevwiki.com/ps3/Talk:PS1_Emulation"