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APOCALYPSE Irem M72 Multi, Sales , Installation and Support

JohnRambo'sKnife said:
Highflow only sells one type of M72 case. It comes with the standoffs pictured on their website.

You can get standoffs from amazon, aliexpress or similar. If you buy an assortment of them, you can see which ones work best. If you can't get perfect height, you can cheat with some m3 nylon/plastic washers or use rubber feet on the acrylic side to close the gap and make everything uniform. Just look at the pictures.
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Is there some material to prefer to make standoffs ? If it s metal, what kind of metal do you recommend ?
Actually I am not satisfied of what I can found in Japan.
 
Have a little problem, pretty sure it's new one as opposed to always have been there, but I can't be 100%.
There is an annoying little sound glitch on all games.
For example on the intro screen of rtype two, each letter burns in, then the numeral II, then there's a bass type sound. That bass sound is a very low audible "hiss"! Everything else plays fine.

Ditto with ninja spirit, when your ninja dies he doesn't scream, there's a low audible hiss. Everything else 100%

Same with Cosmic Cop, except when your ship explodes there's a hiss instead of the sound effect.

Such a small thing but it's annoying me now!

I'll do the usual with repeating roms and all that, but would anyone have a suggestion on where to narrow this down on the pcb itself besides the obvious audio section?

And if it were a bad rom, say, which one/s would be the likely culprit?

Thanks :)
 
Crunch said:
I had the same issue. I believe it was fixed with 06 being a 27c160, not a 27c322.
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I was thinking that's so very similar it must be the problem.
Checked and its the right type, 27c160.
Took it off and reburned the info on again just in case there was a problem, but glitch is still there!

It's such a small thing. After checking a few more games, sound is glitched when....tonma dies, when you credit up in Image Fight, when ninja spirit dies, the splash screen in rtype 2. The one that seems to work perfectly is rtype 1.

Hmm!
 
Did you confirm you're using the proper version ROMs (v1 or v2)? My glitch was literally identical as yours and that fixed it :/
 
Crunch said:
Did you confirm you're using the proper version ROMs (v1 or v2)? My glitch was literally identical as yours and that fixed it :/
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Yeah was thinking that myself, even though its very clearly v.2.
But just to test it anyway, I used a v1 rom anyway. Same result.

I took out rom 6, and as you'd expect those same few sound effects are totally absent.

Rom was blanked and tested blank. Programmed the rom and verified it each time.

So...I dunno. Its a weird one.
 
I would try a 2nd EPROM if you have one handy. I also re-seated everything and did a double check on the kit install at the time.
 
@Monkeymist what's your donor?
Is your 06.bin file dated 08/06/2019?
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No broken pins on the multi?
MCU installed correctly?
 
Appreciate the help, but this particular board has gone on holidays to France. But I pointed the new owner to here so hopefully its all useful :)
 
Hi, can i have acces to lastest GAL ? i try to update ROMS with "Apocalypse M72 v5" to archive.org and he not works with my actual GAL of V4.1 pack... Thx :)

For V2 board
 
could anyone please send me the GAL file (V1 and V2) for version pack 5.7 ? the archive does not contain them. thank you
 
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