music mute for many CPS2 games

[bmn]

ddsom, ddsomjr1, ddsomr3, ddsomr2, ddsomur1, ddsomb, ddsomr1, ddsoma, ddsomj, ddsomud, ddsomu

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cheat "background music"
0 "default"
1 "kill", 1, 0xF027, 0x00

In FBA ini form.

[bmn]

It looks like only two codes are needed to mute music for all the CPS2 games.

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cheat "background music"
0 "default"
1 "kill", 1, 0xF027, 0x00

It works on newer games:
1944
batcir
choko
csclub
ddsom
dimahoo
gigawing
jyangoku
mpang
mshvsf
mvsc
megaman2
progear
pzloop2
qndream
sfa3
sgemf
vhunt2
vsav
vsav2
xmvsf

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cheat "background music"
0 "default"
1 "kill", 1, 0xF019, 0x00

It works on older games:
19xx
armwar
avsp
cybots
dstlk
ddtod
ecofghtr
hsf2
msh
mmancp2u
nwarr
ringdest
sfa
sfa2
sfz2al
ssf2
ssf2t
xmcota

There are some problems with mmatrix and spf2t but they seem to be MAME related.

[Pugsy]

Nice work thanks, added - hope I haven't missed any clones. The byte writes should be word writes:-

1 "kill", 1, 0xF027, 0x00 becomes:-

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  <cheat desc="No Background Music">
    <script state="run">
      <action>audiocpu.pw@F026=0000</action>
    </script>
  </cheat>

1 "kill", 1, 0xF019, 0x00 becomes

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  <cheat desc="No Background Music">
    <script state="run">
      <action>audiocpu.pw@F018=0000</action>
    </script>
  </cheat>

For mmatrix and spf2t try these:-

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  <cheat desc="No Background Music">
    <script state="run">
      <action>audiocpu.pw@F020=0000</action>
    </script>
  </cheat>

[bmn]

Thanks, that works better now.

[bmn]

Hi again.

All the mame forks are still using the old dat format.

What would these look like in that format?

[Pugsy]

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  <cheat desc="No Background Music">
    <script state="run">
      <action>audiocpu.pw@F026=0000</action>
    </script>
  </cheat>

In old format would be:

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:gamename:01100000:F026:00000000:FFFFFFFF:No Background Music

[bmn]

Hm, I added the code and it shows up on the list, but when I turn it On it doesn't work.

Tried with sgemf in mame 0.126 and FBA.
The XML version works in 0.137 of course.

Am I doing this right?

[Pugsy]

Well, I admit did't try the old type code - I guessed the cpu index would be 1 for the audio/soundcpu, maybe it's not (i'm not at my PC right now) try this:

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:gamename:02100000:F026:00000000:FFFFFFFF:No Background Music

If that doesn't edit the cheat in the old cheat engine and try the various CPUs and memory regions...Once you poke 16bits(2bytes) to the correct cpu/region it should work.

[Pugsy]

I've just tried it with my build of MAME 0.126 and 1944, and the original format cheat I posted a few posts ago works...

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:1944:01100000:F026:00000000:FFFFFFFF:No Background Music

it also works with my build of MAME 0.126 and sgemf...

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:sgemf:01100000:F026:00000000:FFFFFFFF:No Background Music

Don't know what exactly you did for it not to work.....perhaps you should try an older version of MAME than 0.126 unless you've compiled it with the cheat.c from here.

MAME 0.125uX - 0.126 should be avoided for cheats unless you build it with a different cheat.c, the reason simply is that it was completely screwed up in the 0.125 update cycle and that's why it was completely replaced.


BTW, you will find the link to the "Working cheat.c for MAME 0.125u7 - 0.126" near the bottom of http://www.mamecheat.co.uk

[bmn]

Thanks, it works fine in 0.125.

I think I'll just stay away from 0.126 now.