Not sure where to ask this, so I'll ask in this fourm

[pasky13]

Please move if this isn't appropriate for this area.

I want to load some CPS2 games into IDA http://www.hex-rays.com/idapro/.

Which files should I actually load if I want to see the games code? Everytime I look into the rom zip files they are split files but I'm unsure which to load up. I understand they first need to be decrypted, but what rom file is what? Do I have to merge them or?

Would really like some insight, thanks.

[Pugsy]

It's probably better to use the DASM command in the MAME debugger

Type: "help dasm" in the debugger for more info

Eg:-
dasm program.asm,0,fffff,0

[pasky13]

Ah, I really wanted to use IDA for its visual disassembler tree view though. I take it you're unsure as well?

[Pugsy]

I take it you're unsure as well?

Not at all finding were ROMs load is really really simple.

It's really clear from the source which files are program code and which are gfx+sound. It even tells you where in memory it is located so you only have to merge the files or parse them seperately.

for instance for the game mshvsf we can see that mvs.05a has a start address of 0x100000

From cps2.c:-

Code: Select all

ROM_START( mshvsf )
	ROM_REGION( CODE_SIZE, "maincpu", 0 )      /* 68000 code */
	ROM_LOAD16_WORD_SWAP( "mvse.03f", 0x000000, 0x80000, CRC(b72dc199) SHA1(61bd581ea4b969298f8a39fe03023b5456cac750) )
	ROM_LOAD16_WORD_SWAP( "mvse.04f", 0x080000, 0x80000, CRC(6ef799f9) SHA1(2d45dbf7bc277b84c6bcd9615ab3b80c42af7781) )
	ROM_LOAD16_WORD_SWAP( "mvs.05a",  0x100000, 0x80000, CRC(1a5de0cb) SHA1(738a27f83704c208d36d73bf766d861ef2d51a89) )
	ROM_LOAD16_WORD_SWAP( "mvs.06a",  0x180000, 0x80000, CRC(959f3030) SHA1(fbbaa915324815246738f3426232e623f039ce26) )
	ROM_LOAD16_WORD_SWAP( "mvs.07b",  0x200000, 0x80000, CRC(7f915bdb) SHA1(683da09c5ba55e31b59aa95a8e13c45dc574ab3c) )
	ROM_LOAD16_WORD_SWAP( "mvs.08a",  0x280000, 0x80000, CRC(c2813884) SHA1(49e5d4bc48f90c8146cb6aafb9240aff0119f1a7) )
	ROM_LOAD16_WORD_SWAP( "mvs.09b",  0x300000, 0x80000, CRC(3ba08818) SHA1(9ab132a3cac55fcccebe6c99b6fb0ba1305f8f6e) )
	ROM_LOAD16_WORD_SWAP( "mvs.10b",  0x380000, 0x80000, CRC(cf0dba98) SHA1(f4c1f8a6e7a79ecc6241d5268b3039f8a09ea516) )

[pasky13]

Thanks pugsy.