Thanks again for putting these awesome cards together! I seem to be having some weird problems with my card and was hoping you could help. It seemed to be working perfectly the first few times I used it, but I’d occasionally get no MIDI signal being received by my SC-55ST (no red flashing light). Rebooting would usually fix it at the beginning. I thought it may have just been a resource conflict with my PAS16 initially since disabling the MPU via software was a bit flaky at times.
Unfortunately, the issue has gotten worse and worse, and now I can’t get a MIDI signal even with everything removed from the system (just a VGA card and the MIDI card). I tried it in two early Pentium systems as well as a fast 486 and the same behaviour happens every time. I’ve disabled all serial/parallel ports in the BIOS, tried different IRQs and port 300, but none of that seems to help.
Launching MQDIAG.EXE *usually* detects the card just fine at the correct IRQ and port, but there have been a few times where it doesn’t detect it. It shows it on IRQ9 when IRQ2 is selected, but I suspect that’s normal since IRQ2 is a cascade interrupt.
I swapped MIDI cables just in case, but that didn’t help. I also tried to use the MPU-401 on a regular sound card to make sure it wasn’t my SC-55ST, but it works fine. The only other thing I can think of is that the orange 3.5mm jack has a problem. I was going to try to hack together a DB9 connector to try MIDI out that way. I will also try a much older 486 system just in case.
It feels like a hardware problem to me, but do you have any other suggestions of things that I could try?
Thanks in advance!