Recent content by system11

You should look into getting Infinikeys - you don't need to replace the roms then or make any hardware changes.

There's a lesson here about not trusting AI tools because all they do is consume and blend/recite things whether correct or not - there's some wild technical misinformation out there already and people blindly trust it. You'll probably find on your switcher if you measure earth and common...

I know you've probably checked but these boards are famous for bootup crashes due to battery and battery backed ram issues. Is the score save RAM getting enough of the battery voltage and is it actually working correctly.

Some of the sounds come from the Yamaha and samples come from the OKI - it's likely the OKI isn't playing. You can replicate in MAME to verify if this behaviour matches - use the sliders menu and drop the OKI sound to zero. Run through the sound test / game, if it sounds the same your OKI chip...

I have a tray full of those, I had to buy a whole pack to get one to repair an Aleck64. I don't remember where I got them but I'll check the parts and tray (looked original vendor supply) for information.

What you mean is people are lazy. I still have a spare (bought back when they still did international shipping) but I'm keeping that - I used one of them when I made my test rig recently. It's not magic just properly assembled, every single pin is separately wired except the key on 7 and the...

Try to find a Bob Roberts one if they're still available.

Yup, DM - some are sold now as of today but that one is still available

Added a couple more

Does anyone have a spare Qsound/D board for a CPS v1.5 set?

I put unibios 4 in two 4 slots systems and also have sound issues now. If I have a cart in slot 1, sound will work for all games. If I remove cart 1, there's no sound at all. Not even in test mode, not at boot, nothing. It's like it's talking just to cart 1 for some sound data. Put 3.x back...

Vertically rolling screen in my case unless I set the horizontal position so far to the left that you couldn't see 2 inches of screen space. Adjusting the vertical sync pot made almost no difference. The error is specific to this exact revision of the board, the MV4FT2 and MV4FS for example...

If you have bad sync on a MV4FT look at the 100 and 470 ohm resistors on the sync line, they're switched compared to every other MVS. When I worked out what was going on I found a few notes about hacks for the issue on this exact revision, dont bother adding resistors just swap them, PCB was...

Updates

Added Sailormoon, removed sold items