After so much grief, turns out it was just a bad MIDI cable and my own stupidity making the custom cable. MQDIAG reported "PCMIDI found at IRQ 2, I/O address 0330 EPROM Version: 200-010" so I figured I'd try throwing the multimeter on the cable and discovered a pin not making contact. Highly suspect …

I purchased one of these a while back and just getting around to installing it. Unfortunately, I haven't had any luck with it working. On the software side, I tried it a bunch of different games and get nothing. No messages, no sound. I tried fresh installs of DOS and exhaustively checked BIOS …

Thanks for the replies! My first sound card was a SB16 WavEffects. I saved up all my Christmas and birthday money and installed in the family 486, so I have to admit I most closely associate that CQM sound as being "correct" even if it doesn't sound as good. I like the OPL3 though. It definitely …

So I have a CT1740 and a CT2950. I have my own opinions, but I'm curious what everyone's thoughts are on how these cards compare.

Each address line on a DRAM quadruples the size. Only way 30pin chip can have 512KB 2MB or 8MB is when some sort of assymmetric addressing is used, i.e CAS and RAS have unequal size in bits but I don't think there are many motherboards that support such a method. I haven't seen a DRAM chip to …

These are the exact same sticks I have, except four of them. I assumed the "2M" meant 2 megabytes. So either 1) "2M" is just part of the model number or something OR 2) they're intended for another system that can see the full capacity? https://classiccomputershop.eu/Webwinkel-Product-212096159/Set- …

I installed 4x 2MB 30-pin SIMMs on a 486 board, but the BIOS only sees 4MB total (1MB each). Is there some limitation I don't know about?