Here are some more pics. I noticed if I hold the button labeled "test" when I turn the PC on it does some sort of diagnostics type test but it hangs.

IEATCHEEZEYO wrote on 2024-02-27, 03:59:

I found this weird ISA card. It appears to have some sort of sound output and an amplifier on board. Also there are a couple jumpers. One jumper is labeled eprom enable. When it is enabled the card makes my computer have a ROM disk that has a version of eurodos and some other programs. I dumped the contents of the rom disk to look at as well. There is a test program the shows some interesting information. I tried to get the sound to work but haven't had any luck. Here are some pics I took.

Maybe this...CRT-500 I/O board from a Merit Industries Megatouch XL arcade machine.

Owners Manual - http://megatouch.arcade-cabinets.com/manuals/ … L_pm0109-0D.pdf

Service Manual - https://web.archive.org/web/20231006131521/ht … vice_Manual.pdf

I believe it is because there are files that say merit industries. I wonder if there is a way to use the sound card. It says sound blaster compatible dsp at 220h. So far I haven't been able to get it to work and I don't see any drivers on the rom disk. There is mention of miles design audio interface but I'm not sure what it is.

IEATCHEEZEYO wrote on 2024-02-27, 13:17:

I believe it is because there are files that say merit industries. I wonder if there is a way to use the sound card. It says sound blaster compatible dsp at 220h. So far I haven't been able to get it to work and I don't see any drivers on the rom disk. There is mention of miles design audio interface but I'm not sure what it is.

Connected in some way to this I guess...try a cross-post in the sound forum

https://en.wikipedia.org/wiki/Miles_Sound_System

http://www.ke5fx.com/ and http://www.thegleam.com/ke5fx/misc/AIL2.ZIP

https://www.radgametools.com/miles.htm

Audio may also have been affected by which motherboard was fitted to the original arcade machine...these seem to have been in common use with the XL series

https://theretroweb.com/motherboards/s/unicorn-endat-486pl

IEATCHEEZEYO wrote on 2024-02-27, 13:17:

I believe it is because there are files that say merit industries. I wonder if there is a way to use the sound card. It says sound blaster compatible dsp at 220h. So far I haven't been able to get it to work and I don't see any drivers on the rom disk. There is mention of miles design audio interface but I'm not sure what it is.

The card may decode I/O address 220h, but it doesn't mean it's SB-compatible.
AD1845 isn't SB-compatible, and I can't see any other sound chips there.

AD1845 is only compatible with the DAC/ADC part of WSS - no FM synthesis, and probably no WSS status/config ports.
So, first thing to do would be finding some software that only uses the WSS DAC, and doesn't care about status/config - maybe Inertia Player?

If you get it working as WSS, you can try WSSXLAT.EXE for SB emulation.

That Looks identical to the motherboard I found along with the card. It also had a CRT with no shell (kind of like an arcade monitor) with some sort of serial touchscreen controller connected to it. The motherboard works perfect. it has an AMD Am486 DX4-100 I think. I found all of this in a box on the side of the road, I seen a circuit board poking out and stopped to grab it all. there was a broken CD that said Megatouch Gold. So it was some sort of gambling machine it looks like.
Any ideas about the rom-dos? It seems kind of cool.