Editing PS2 Emulation/PS2 Config Commands

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  0x4000000  = Enable type 2 config from cmd 0x12.
  0x4000000  = Enable type 2 config from cmd 0x12.
  0x8000000  = Accurate VU0 DIV opcode, not used in COP2 mode.
  0x8000000  = Accurate VU0 DIV opcode, not used in COP2 mode.
  0x10000000 = Full Accurate VU0 MUL. Use runtime from CMD 0x10, but for every matching VU0 opcode, including opcodes like MSUB for mul part.
  0x10000000 = Fast Accurate VU0 MUL. Try to round mantissa. Opcodes like MSUB/MADD additionally require 0x100000 to be enabled, otherwise command skip them. Not used in COP2 mode.
0x20000000 = Full Accurate VU0 MUL. Use runtime from CMD 0x10, but for every matching VU0 opcode, including opcodes like MSUB for mul part.
               Opcodes like MSUB/MADD additionally require 0x100000 to be enabled, otherwise command skip them.
               Opcodes like MSUB/MADD additionally require 0x100000 to be enabled, otherwise command skip them.
0x20000000 = Fast Accurate VU0 MUL. Opcodes like MSUB/MADD additionally require 0x100000 to be enabled, otherwise command skip them. Not used in COP2 mode.
   
   
  Selecting both 0x10000000 and 0x20000000 (0x30000000) work the same way as 0x20000000.
  Selecting both 0x10000000 and 0x20000000 (0x30000000) work the same way as 0x20000000.
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This happen because emulator read 64 bit value from 0x100000 and reverse it from little to big endian as whole 64 bits. Exactly the same happen for values that emulator write to memory.
This happen because emulator read 64 bit value from 0x100000 and reverse it from little to big endian as whole 64 bits. Exactly the same happen for values that emulator write to memory.
This little code snippet can help little bit with conversion.
# Value to convert, copied from hex editor or disassembler.
x = "00 11 22 33 44 55 66 77"
x = x.replace(" ", "")
x = int(x, 16)
x = (x & 0x00000000FFFFFFFF) << 32 | (x & 0xFFFFFFFF00000000) >> 32
x = (x & 0x0000FFFF0000FFFF) << 16 | (x & 0xFFFF0000FFFF0000) >> 16
x = (x & 0x00FF00FF00FF00FF) << 8  | (x & 0xFF00FF00FF00FF00) >> 8
a = x >> 56
b = (x >> 48) & 0xFF
c = (x >> 40) & 0xFF
d = (x >> 32) & 0xFF
e = (x >> 24) & 0xFF
f = (x >> 16) & 0xFF
g = (x >> 8) & 0xFF
h = x & 0xFF
print("{:02X} {:02X} {:02X} {:02X} {:02X} {:02X} {:02X} {:02X}".format(a,b,c,d,e,f,g,h))
Beside own python installation, code can be used on site like https://www.w3schools.com/python/trypython.asp?filename=demo_compiler
</div>
</div>
</div>
</div>
Line 1,089: Line 1,069:
  32 bit ID  | 32 bit align | 32 bit align | 32 bit align | 32 bit align | 32 bit align
  32 bit ID  | 32 bit align | 32 bit align | 32 bit align | 32 bit align | 32 bit align
  0x0000001F |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000
  0x0000001F |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x20|net_id=0x24|data=1x int64|}}
SIO2 timing related, still partially unknown.
Format:
32 bit ID  | 32 bit align |    64 bit data    | 32 bit align | 32 bit align
0x00000020 |  0x00000000  | 0x0000000000002EE0 |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x21|net_id=Not available|data=1x int32|}}
Unknown, GSGIF SPE related.
Format:
32 bit ID  | 32 bit align | 32 bit data | 32 bit align | 32 bit align | 32 bit align
0x00000021 |  0x00000000  | 0x00000009  |  0x00000000  |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x22|net_id=0x26|data=2x int32|}}
Improves FPU accuracy for selected memory range. Efective only on: ADD.s, SUB.s, ADDA.s, SUBA.s, MADD.s, MSUB.s, MADDA.s, MSUBA.s.
For M(UL) opcodes, command is active only on ADD/SUB stage.
Format:
32 bit ID  | 32 bit align | 32 bit EE start memory offset | 32bit EE end memory offset | 32 bit align | 32 bit align
0x00000022 |  0x00000000  |          0x0012A3D4          |        0x0012A468        |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x23|net_id=0x27|data=2x int32|}}
Improves COP2 operations accuracy for selected memory range. Effective only for opcodes:
VSUBAxyzw, VSUBAq, VSUBAi, VSUBA, VSUBxyzw, VSUBq, VSUBi, VSUB, VMSUBAxyzw,
VMSUBAq, VMSUBAi, VMSUBA, VMSUBxyzw, VMSUBq, VMSUBi, VMSUB, VMADDAxyzw,
VMADDAq, VMADDAi, VMADDA, VMADDxyzw, VMADDq, VMADDi, VMADD, VADDAxyzw,
VADDAq, VADDAi, VADDA, VADDxyzw, VADDq, VADDi, VADD
Format:
32 bit ID  | 32 bit align | 32 bit EE start memory offset | 32bit EE end memory offset | 32 bit align | 32 bit align
0x00000023 |  0x00000000  |          0x0012A3D4          |        0x0012A468        |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x24|net_id=0x28|data=1x int32|}}
Unknown, CDVD related. Only accept values 0/1/2/3
Format:
32 bit ID  | 32 bit align | 32 bit data | 32 bit align | 32 bit align | 32 bit align
0x00000024 |  0x00000000  | 0x00000001  |  0x00000000  |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x25|net_id=0x29|data=2x int32|}}
Seek time modifier. Exact values meaning is unknown for now, they are used as multiplier. First param affect fast seek time, second param affect full seek time. Default value is 0x1F40, 0xBB80 (8000, 48000). Config affect only CDVD N Command Seek, read command that "SeekToSector" is not affected.
Format:
32 bit ID  | 32 bit align | 32 bit data | 32 bit data | 32 bit align | 32 bit align
0x00000025 |  0x00000000  | 0x00001F40  |  0x0000BB80 |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x26|net_id=0x2A|data=None|}}
Unknown, used only in All-Star Baseball 2004
Format:
32 bit ID  | 32 bit align | 32 bit align | 32 bit align | 32 bit align | 32 bit align
0x00000026 |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x27|net_id=0x2B|data=None|}}
When enabled emulated register 0x1F40200F (disc type) is set to 0x13 (PS2CDDA) when media type detected by emu is 0x12 (PS2CD). Required for multi-track PS2 games like Dance Factory.
Format:
32 bit ID  | 32 bit align | 32 bit align | 32 bit align | 32 bit align | 32 bit align
0x00000027 |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x28|net_id=0x2C|data=1x int32|}}
Store (value | value << 32 | value << 64 | value << 96) in SPE 0 (IOP) LS.
Format:
32 bit ID  | 32 bit align | 32 bit data | 32 bit align | 32 bit align | 32 bit align
0x00000028 |  0x00000000  | 0x00000001  |  0x00000000  |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x29|net_id=Not available|data=None|}}
Skip one of functions in r5900 event test. Said function interact with GSGIF SPE and GS hardware, but in some conditions can also write to BGCOLOR GS register (why?).
Format:
32 bit ID  | 32 bit align | 32 bit align | 32 bit align | 32 bit align | 32 bit align
0x00000029 |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x2A|net_id=0x2E|data=1x int32|}}
Unknown.
Format:
32 bit ID  | 32 bit align | 32 bit data | 32 bit align | 32 bit align | 32 bit align
0x0000002A |  0x00000000  | 0x00000172  |  0x00000000  |  0x00000000  |  0x00000000
{{BoxcommGX|id=0x2B|net_id=0x2F|data=1x int32|}}
Store value in SPE 1 (PS2 SPU2) LS. Used values are 1, and 2 (after andi, so 3 trigger both configs).
Indigo Prophecy/Fahrenheit uses 0x1, Kengo 3 uses 0x2
Format:
32 bit ID  | 32 bit align | 32 bit data | 32 bit align | 32 bit align | 32 bit align
0x0000002B |  0x00000000  | 0x00000001  |  0x00000000  |  0x00000000  |  0x00000000
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