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Author Topic: Ms Pacman II by Orca  (Read 3807 times)

Offline James33

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Ms Pacman II by Orca
« on: February 20, 2007, 08:14:09 PM »
Has anyone had any luck getting this game to work in Mame ?

This is aIl have on it

Code: [Select]
Here is the ROMs for Ms Pacman II by Orca. dumped 11/22/99 by Jim Skilskyj

MSP2P36E.BIN 6E CPU PCB
MSP2P46F.BIN 6F CPU PCB
MSP2P56H.BIN 6H CPU PCB
MSP2P66J.BIN 6J CPU PCB
MSP2P7S1.BIN SATELLITE PCB
MSP2P8S2.BIN SATELLITE PCB
MSP2P15E.BIN 5E VIDEO PCB
MSP2P25F.BIN 5F VIDEO PCB


Code: [Select]
ROM_START( mspacii )
ROM_REGION( 0x10000, REGION_CPU1, 0 )   /* 8 banks of 64k for code */
ROM_LOAD( "msp2p36e.bin",  0x0000, 0x1000, CRC(df673b57 ))
ROM_LOAD( "msp2p46f.bin",  0x1000, 0x1000, CRC(7591f606 ))
ROM_LOAD( "msp2p56h.bin",  0x2000, 0x1000, CRC(c8ef1a7f ))
ROM_LOAD( "msp2p66j.bin",  0x3000, 0x1000, CRC(165a9dd8 ))
ROM_LOAD( "msp2p7s1.bin",  0x8000, 0x1000, CRC(fbbc3d2e ))
ROM_LOAD( "msp2p8s2.bin",  0x9000, 0x1000, CRC(aba3096d ))

ROM_REGION( 0x2000, REGION_GFX1, ROMREGION_DISPOSE )
ROM_LOAD( "msp2p15e.bin",  0x0000, 0x1000, CRC(04333722 ))
ROM_LOAD( "msp2p25f.bin",  0x1000, 0x1000, CRC(615af909 ))

ROM_REGION( 0x0120, REGION_PROMS, 0 )
ROM_LOAD( "82s123.7f",    0x0000, 0x0020, CRC(2fc650bd) SHA1(8d0268dee78e47c712202b0ec4f1f51109b1f2a5) )
ROM_LOAD( "82s126.4a",    0x0020, 0x0100, CRC(3eb3a8e4) SHA1(19097b5f60d1030f8b82d9f1d3a241f93e5c75d6) )

ROM_REGION( 0x0200, REGION_SOUND1, 0 ) /* sound PROMs */
ROM_LOAD( "82s126.1m",    0x0000, 0x0100, CRC(a9cc86bf) SHA1(bbcec0570aeceb582ff8238a4bc8546a23430081) )
ROM_LOAD( "82s126.3m",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END
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Offline Robert

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Re: Ms Pacman II by Orca
« Reply #1 on: February 23, 2007, 08:04:57 PM »
It is in misfitmame, but not working

GAME( 1998, mspacii,  0,         pacman,  pacman,   0,     ROT90,  "[Midway] Orca?", "Ms. Pacman II", GAME_NOT_WORKING )
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Offline James33

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Re: Ms Pacman II by Orca
« Reply #2 on: February 24, 2007, 07:19:32 AM »
Quote from: Robert on February 23, 2007, 08:04:57 PM
It is in misfitmame, but not working

GAME( 1998, mspacii,  0,         pacman,  pacman,   0,     ROT90,  "[Midway] Orca?", "Ms. Pacman II", GAME_NOT_WORKING )


Yeah I seen that ,  I have tried a things but no luck so far :(
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Offline Robert

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Re: Ms Pacman II by Orca
« Reply #3 on: February 26, 2007, 01:28:11 AM »
I had a look, firstly the 4th rom isn't even the right one, is some other speciality item.

However after putting the right one in, the game still doesn't work, actually it is running but there's no sound and the graphics are really flocked up and the screen keeps flashing rubbish.

In the code the author is using port $C7 for something, and he's using IM2 (interrupt mode 2) which isn't normally supported by the hardware.

Forget this game for now would be my advice.


edit: I was able to fix 3 of Dave Widel's games - aa, dace and drace.
« Last Edit: February 26, 2007, 06:20:11 AM by Robert »
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Offline James33

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Re: Ms Pacman II by Orca
« Reply #4 on: February 26, 2007, 08:58:46 AM »
Ah ok :( 

So what was the 4th rom called ?   I thought I had all of them ?
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Offline Robert

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Re: Ms Pacman II by Orca
« Reply #5 on: February 27, 2007, 02:11:30 AM »
The 4th rom you have there is from mspacmab, and it's what misfitmame shows as well.

But, my set had one with these details:

CRC(d498f435) SHA1(c041841b1349d8d5c2d560aed54c4aeb8adfddb8)

As I say, it doesn't work either.
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Offline James33

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Re: Ms Pacman II by Orca
« Reply #6 on: February 27, 2007, 04:19:50 AM »
Quote from: Robert on February 27, 2007, 02:11:30 AM
The 4th rom you have there is from mspacmab, and it's what misfitmame shows as well.

But, my set had one with these details:

CRC(d498f435) SHA1(c041841b1349d8d5c2d560aed54c4aeb8adfddb8)

As I say, it doesn't work either.

Yeah I do have that rom :)


Code: [Select]
ROM_START( mspacii )
ROM_REGION( 0x10000, REGION_CPU1, 0 )   /* 8 banks of 64k for code */
ROM_LOAD( "msp2p36e.bin",  0x0000, 0x1000, CRC(df673b57) SHA1(93ee4e8f9751db5f7d3c35988fcb8ae8037464ed) )
ROM_LOAD( "msp2p46f.bin",  0x1000, 0x1000, CRC(7591f606) SHA1(0aead0ac5af602269df8732c5763147cdb543b8d) )
ROM_LOAD( "msp2p56h.bin",  0x2000, 0x1000, CRC(c8ef1a7f) SHA1(0c9a28bbe63d7d44511a13316937a21b8846543e) )
ROM_LOAD( "msp2p66j.bin",  0x3000, 0x1000, CRC(d498f435) SHA1(c041841b1349d8d5c2d560aed54c4aeb8adfddb8) )
ROM_LOAD( "msp2p7s1.bin",  0x8000, 0x1000, CRC(fbbc3d2e) SHA1(dc4337d7f0961e048a433021f670da6d314bd663) )
ROM_LOAD( "msp2p8s2.bin",  0x9000, 0x1000, CRC(aba3096d) SHA1(661e28785931fa329c2ebdc95d78072a42c512ff) )

ROM_REGION( 0x2000, REGION_GFX1, ROMREGION_DISPOSE )
ROM_LOAD( "msp2p15e.bin",  0x0000, 0x1000, CRC(04333722) SHA1(bb179d5302b26b815b5d7eff14865e7b4f8a6880) )
ROM_LOAD( "msp2p25f.bin",  0x1000, 0x1000, CRC(615af909) SHA1(fd6a1dde780b39aea76bf1c4befa5882573c2ef4) )

ROM_REGION( 0x0120, REGION_PROMS, 0 )
ROM_LOAD( "82s123.7f",    0x0000, 0x0020, CRC(2fc650bd) SHA1(8d0268dee78e47c712202b0ec4f1f51109b1f2a5) )
ROM_LOAD( "82s126.4a",    0x0020, 0x0100, CRC(3eb3a8e4) SHA1(19097b5f60d1030f8b82d9f1d3a241f93e5c75d6) )

ROM_REGION( 0x0200, REGION_SOUND1, 0 ) /* sound PROMs */
ROM_LOAD( "82s126.1m",    0x0000, 0x0100, CRC(a9cc86bf) SHA1(bbcec0570aeceb582ff8238a4bc8546a23430081) )
ROM_LOAD( "82s126.3m",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) ) /* timing - not used */
ROM_END


Quote from: Robert on February 26, 2007, 01:28:11 AM

In the code the author is using port $C7 for something, and he's using IM2 (interrupt mode 2) which isn't normally supported by the hardware.


It might be for the Orca hardware ?
« Last Edit: February 27, 2007, 04:36:37 AM by James33 »
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Offline Robert

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Re: Ms Pacman II by Orca
« Reply #7 on: February 28, 2007, 06:33:21 AM »
Orca hardware? what is that? Nothing in mame about it.

Anyway, I got mrmrspac to run, it just needed 2 bytes of ram to be defined.
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Offline James33

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Re: Ms Pacman II by Orca
« Reply #8 on: February 28, 2007, 06:45:51 AM »
Quote from: Robert on February 28, 2007, 06:33:21 AM
Orca hardware? what is that? Nothing in mame about it.

Anyway, I got mrmrspac to run, it just needed 2 bytes of ram to be defined.

There are games in mame that have Orca copyright on them  They seem to be bootlegs though .




I have no idea what mrmrspac is . Is it a hack ?
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Offline Robert

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Re: Ms Pacman II by Orca
« Reply #9 on: February 28, 2007, 04:20:02 PM »
Yes it is another hack of mspacman. The only changes that I can see, is it says "MR MRS PACMAN" on the front screen, and the monsters follow a different logic (different paths).

The problem in misfit mame is that it would run for about 10 seconds in gameplay (or demo) then suddenly reset.
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Offline Robert

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Re: Ms Pacman II by Orca
« Reply #10 on: July 18, 2007, 06:34:40 AM »
James I don't know if you are interested, but I've got mspacii working, it needed 2 roms changed, and 2 protections to be emulated. I can either paste the code here, or you can wait for the next release of misfitmame.

« Last Edit: July 18, 2007, 08:41:41 AM by Robert »
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Offline Ashura-X

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Re: Ms Pacman II by Orca
« Reply #11 on: July 18, 2007, 03:18:15 PM »
Quote from: Robert on July 18, 2007, 06:34:40 AM
James I don't know if you are interested, but I've got mspacii working, it needed 2 roms changed, and 2 protections to be emulated. I can either paste the code here, or you can wait for the next release of misfitmame.


Hey man .. if you put the code here I will add that on my build for sure ;)
Thx for the efforts !

Ash.
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Offline James33

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Re: Ms Pacman II by Orca
« Reply #12 on: July 18, 2007, 09:24:55 PM »
Quote from: Robert on July 18, 2007, 06:34:40 AM
James I don't know if you are interested, but I've got mspacii working, it needed 2 roms changed, and 2 protections to be emulated. I can either paste the code here, or you can wait for the next release of misfitmame.


Yes I am very much intrested :)  What was the reason for the rom change?
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Offline Robert

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Re: Ms Pacman II by Orca
« Reply #13 on: July 18, 2007, 10:30:33 PM »
Mspacii is basically a hack of mspacmab. I knew this because of the presence of "boot4" rom. I made a "diff" of the disassemblies between them. A custom memory map was made, so that I could change stuff without breaking other games. The "diff" revealed a few protections and other mystery things. It was simply a matter of patching with mspacmab code until it started to work. So, we had a game that looked identical in every way to mspacmab, except that the big MM symbol was missing.

Then, I remembered about the different rom earlier in this thread. I replaced "boot4" with the one from the original set, and it said BAD ROM 5. Hmm. I could either patch out the rom checksum code, or find a rom that was agreeable. So, being a hack of mspacmab, I tried "boot5", and yay, it fixed that. Now, the front screen was as you see it. Next, I could now remove all the patches, and it kept working.

This morning, I realised that one protection was really just something to get around a bug, so it was replaced by a 1-byte patch. So here it is, the final code:

Firstly you need to find the existing code for pacman and replace it with this:
Code: [Select]
static ADDRESS_MAP_START( writeport, ADDRESS_SPACE_IO, 8 )
ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
AM_RANGE(0x00, 0xff) AM_WRITE(pacman_interrupt_vector_w) /* Pac-Man only */
ADDRESS_MAP_END
Then the rest is all new. Throw out any existing code you might have for mspacii.
Code: [Select]
/* used by extra routine at $3FE, bit 4 of 504d needs to be low, and of 504e to be high */
READ8_HANDLER( mspacii_prot_r )
{
return offset<<4;
}

static DRIVER_INIT( mspacii )
{
UINT8 *RAM = memory_region(REGION_CPU1);
RAM[0x3018] = 4; /* fix a bug with interrupt handling */
}

static ADDRESS_MAP_START( mspacii_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x3fff) AM_ROM
AM_RANGE(0x4000, 0x43ff) AM_MIRROR(0xa000) AM_READWRITE(MRA8_RAM,pacman_videoram_w) AM_BASE(&videoram) AM_SIZE(&videoram_size)
AM_RANGE(0x4400, 0x47ff) AM_MIRROR(0xa000) AM_READWRITE(MRA8_RAM,pacman_colorram_w) AM_BASE(&colorram)
AM_RANGE(0x4800, 0x4bff) AM_MIRROR(0xa000) AM_READWRITE(pacman_read_nop,MWA8_NOP)
AM_RANGE(0x4c00, 0x4fef) AM_MIRROR(0xa000) AM_RAM
AM_RANGE(0x4ff0, 0x4fff) AM_MIRROR(0xa000) AM_RAM AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
AM_RANGE(0x5000, 0x5000) AM_MIRROR(0x8000) AM_WRITE(interrupt_enable_w)
AM_RANGE(0x5001, 0x5001) AM_MIRROR(0x8000) AM_WRITE(pacman_sound_enable_w)
AM_RANGE(0x5002, 0x5002) AM_MIRROR(0x8000) AM_WRITENOP
AM_RANGE(0x5003, 0x5003) AM_MIRROR(0x8000) AM_WRITE(pacman_flipscreen_w)
AM_RANGE(0x5004, 0x5005) AM_MIRROR(0x8000) AM_WRITE(pacman_leds_w)
AM_RANGE(0x5006, 0x5006) AM_MIRROR(0x8000) AM_WRITENOP
AM_RANGE(0x5007, 0x5007) AM_MIRROR(0x8000) AM_WRITE(pacman_coin_counter_w)
AM_RANGE(0x5040, 0x505f) AM_MIRROR(0x8000) AM_WRITE(pacman_sound_w) AM_BASE(&pacman_soundregs)
AM_RANGE(0x5060, 0x506f) AM_MIRROR(0x8000) AM_RAM AM_BASE(&spriteram_2)
AM_RANGE(0x5070, 0x507f) AM_MIRROR(0x8000) AM_WRITENOP
AM_RANGE(0x50c0, 0x50c0) AM_MIRROR(0x8000) AM_WRITE(watchdog_reset_w)
AM_RANGE(0x5000, 0x5000) AM_MIRROR(0x8000) AM_READ(input_port_0_r) /* IN0 */
AM_RANGE(0x5040, 0x5040) AM_MIRROR(0x8000) AM_READ(input_port_1_r) /* IN1 */
AM_RANGE(0x504d, 0x504e) AM_READ(mspacii_prot_r)
AM_RANGE(0x5080, 0x5080) AM_MIRROR(0x8000) AM_READ(input_port_2_r) /* DSW1 */
AM_RANGE(0x8000, 0x9fff) AM_ROM
AM_RANGE(0xfffc, 0xffff) AM_WRITENOP
ADDRESS_MAP_END

static MACHINE_DRIVER_START( mspacii )
MDRV_IMPORT_FROM(pacman)
MDRV_CPU_MODIFY("main")
MDRV_CPU_PROGRAM_MAP(mspacii_map,0)
MACHINE_DRIVER_END

ROM_START( mspacii )
ROM_REGION( 0x10000, REGION_CPU1, 0 )
ROM_LOAD( "mspacii.1",    0x0000, 0x1000, CRC(df673b57) SHA1(93ee4e8f9751db5f7d3c35988fcb8ae8037464ed) )
ROM_LOAD( "mspacii.2",    0x1000, 0x1000, CRC(7591f606) SHA1(0aead0ac5af602269df8732c5763147cdb543b8d) )
ROM_LOAD( "mspacii.3",    0x2000, 0x1000, CRC(c8ef1a7f) SHA1(0c9a28bbe63d7d44511a13316937a21b8846543e) )
ROM_LOAD( "mspacii.4",   0x3000, 0x1000, CRC(d498f435) SHA1(c041841b1349d8d5c2d560aed54c4aeb8adfddb8) )
ROM_LOAD( "boot5",        0x8000, 0x1000, CRC(8c3e6de6) SHA1(fed6e9a2b210b07e7189a18574f6b8c4ec5bb49b) )
ROM_LOAD( "mspacii.6",    0x9000, 0x1000, CRC(aba3096d) SHA1(661e28785931fa329c2ebdc95d78072a42c512ff) )

ROM_REGION( 0x2000, REGION_GFX1, ROMREGION_DISPOSE )
ROM_LOAD( "mspacii.5e",   0x0000, 0x1000, CRC(04333722) SHA1(bb179d5302b26b815b5d7eff14865e7b4f8a6880) )
ROM_LOAD( "5f",              0x1000, 0x1000, CRC(615af909) SHA1(fd6a1dde780b39aea76bf1c4befa5882573c2ef4) )

ROM_REGION( 0x0120, REGION_PROMS, 0 )
ROM_LOAD( "82s123.7f",    0x0000, 0x0020, CRC(2fc650bd) SHA1(8d0268dee78e47c712202b0ec4f1f51109b1f2a5) )
ROM_LOAD( "82s126.4a",    0x0020, 0x0100, CRC(3eb3a8e4) SHA1(19097b5f60d1030f8b82d9f1d3a241f93e5c75d6) )

ROM_REGION( 0x0200, REGION_SOUND1, 0 ) 
ROM_LOAD( "82s126.1m",    0x0000, 0x0100, CRC(a9cc86bf) SHA1(bbcec0570aeceb582ff8238a4bc8546a23430081) )
ROM_LOAD( "82s126.3m",    0x0100, 0x0100, CRC(77245b66) SHA1(0c4d0bee858b97632411c440bea6948a74759746) )
ROM_END

GAME( 1998, mspacii,  mspacman, mspacii,  mspacman, mspacii,  ROT90, "[Midway] Orca?", "Ms. Pacman II", GAME_SUPPORTS_SAVE )
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Offline James33

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Re: Ms Pacman II by Orca
« Reply #14 on: July 19, 2007, 01:15:26 AM »
Thanks robert for that info and the driver :)
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