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Final Burn Neo => FBN Development => Topic started by: iq_132 on February 26, 2008, 05:23:42 AM

Title: Mysterious Stones Driver
Post by: iq_132 on February 26, 2008, 05:23:42 AM

Here's a driver for Mysterious Stones (http://www.mameworld.net/maws/driverinfo/mystston.c). 

Games supported on this hardware:
Mysterious Stones - Dr. John's Adventure (http://www.mameworld.net/maws/romset/mystston)
Mysterious Stones - Dr. Kick in Adventure (http://www.mameworld.net/maws/romset/myststno)

Sound, high color, savestates, etc., are all supported.


Known bugs:
The airplane sound is not correct
The game is running a bit fast (the AY8910 emulation causes severe problems at the proper refresh rate)
Randomly freezes?

Also, you'll need to update the m6502 core a bit:

Just replace the old m6502Scan with this (in src/cpu/m6502/m6502.cpp)

Code: [Select]

int m6502Scan(int nAction)
{
if ((nAction & ACB_DRIVER_DATA) == 0) {
return 0;
}

for (int i = 0; i < MAX_CPU; i++) {
m6502_regs = &m6502_active_cpu_regs[i];

SCAN_VAR(A);
SCAN_VAR(X);
SCAN_VAR(Y);
SCAN_VAR(P);
SCAN_VAR(S);
SCAN_VAR(PC);
SCAN_VAR(nTotalCycles);
}

return 0;
}

Also x2, if you're not using 0.2.96.73+ as your codebase, you'll need to change this
HARDWARE_MISC_PRE90S
to this
HARDWARE_MISC_MISC

Title: Re: Mysterious Stones Driver
Post by: hxghwx on March 18, 2008, 03:33:33 AM

Edit and translate with the VC, circulate a mistake

Title: Re: Mysterious Stones Driver
Post by: Barry Harris on March 18, 2008, 04:01:58 AM

VC doesn't like the M6502 core. It's the same for mole - although that one doesn't crash the app.

Title: Re: Mysterious Stones Driver
Post by: Barry Harris on March 18, 2008, 04:25:57 AM

It looks the app crash is down to an error in the AY8910 initialisation.

Change line 14 from this;

Code: [Select]

static short *pAY8910Buffer[3], *pFMBuffer = NULL;
to this;

Code: [Select]

static short *pAY8910Buffer[6], *pFMBuffer = NULL;
That will stop the app crash - game still doesn't work though. :) None of the M6502 based games do in VC builds.

Title: Re: Mysterious Stones Driver
Post by: iq_132 on March 18, 2008, 02:54:15 PM

Oops!  I'll have to set up the VC environment in a day or so and see if I can track down the m6502 issues.