Recent content by mecha

not all Mortal Kombats are Y-unit. I have T-unit boards that use the player 3 headers like the other games. I had actually made a multi game player 3 harness to plug into one of those condenser boards a hundred years ago and adapted MK1 to the Y-unit style header. lol I'll probably never play...

take a look by the JAMMA edge, there will be a large inductor coming off the +5V. the solder seems to break down here, you'll lose the +5V circuit that's supposed to power the chips. also if you do dumb things like I have in the past using a Y-unit style sound board harness or one missing the...

I've never done this before, there's so many options. lol if yours works out good can you share all the parameters you used?

I was wondering where you buy this. lol pardon my ignorance, I've missed many pages of this thread, is this something you pay PCBWay to make?

I might be able to make roms Friday. this is exciting.

"I'LL BUY YOU FOR A DOLLAR!" 🤣 that's amazing

yeah the drums or like the up close punch sounds were DAC, the Oki ADPCM I'm actually uncertain how many samples it can play at once. music is FM, all those musical notes are programmed like play the instrument, this length, this pitch. had to be a nightmare for them to program. but converting...

so I played again, there's actually a lot of player 2 sounds that cut out. Scorpion's spear sound doesn't always work but the GET OVER HERE! I think works pretty consistent. I'm guessing it's some kind of priority issue with DCS sound. also the bonus stage doesn't have the "win" music and I...

thank you @Asure I tried it out in MAME, the Sub-Zero slide doesn't work. I can explore more later.

the ADPCM sound boards have been at an age where the old caps leak and outgas into anything nearby too. so helpful safety tip for everyone. lol

+12V has a wider operating tolerance. 10-14V is totally acceptable. +5V however is very narrow operating tolerance, 4.75-5.25V. don't try adjusting +5V to make -5V exactly -5.00V or +12V 12.00V, these are unregulated/unadjustable voltages and they're fine. I don't think I've ever promoted this...

there's like a PAL chip the sound needs, towards the middle of the board. I want to say it's U1 but don't quote me lol if you have another Wolf unit game you can try swapping that chip. my MK3 board began life as a UMK3 and had no sound... the other parts board I got with it I robbed that chip...

your location says Lisbon, is that WI? also which sound is not working?

by design, yes, they stop on the first error they detect. I don't know what a UB11 or UB13 are off hand, but a lot of the major not-74xx-TTL parts on these games are seemingly unobtanium. like this is the only store I was able to find with what may be what is needed...

I was looking at my System 12 games and the one that's not near 3V anymore definitely is showing signs of swelling.