I've acquired what seems to be an early version of the well known Music Quest PCMIDI interface cards. The ID on this one is "MQ-1" and I've been unable to find any documentation on the Internet so far, so maybe we can use this thread to compile all known info about it.

Now, judging by the date codes on the chips and PCB it has been manufactured in early 1989. The overall design is very similar to the later PCMIDI cards, with a Z8 microcontroller, 2K x 8 SRAM, 27C64 ROM and a bunch of logic chips. Notable differences are the use of a DIP switch block instead of jumpers and no PAL/GAL:

The card is in good condition and running the Music Quest Utilities and Diagnostics utility v4.20 detects the card as an "MCC" interface with firmware v120-029 (this version matches the label on the ROM chip, which I've dumped and attached to this post). Also, it seems that the current DIP switch configuration (switches 4 and 6 closed, the rest open) is the usual default for MPU-401 MIDI interfaces on port 330h and IRQ 2/9:

I haven't tested the card with my MIDI modules yet, but I think it's safe to assume it supports intelligent mode. It probably has the same problems with Wing Commander as the later interfaces with ROM versions older than 010, but it can still be a good option if it has good compatibility with most games. So, here are my questions and requests:

• I assume the breakout cable from later PCMIDI cards is compatible with this one, are there any tests I can do on the DB9 port to verify this before attempting to connect it?
• What games are considered to be picky about MPU-401 compatibility that I can use to test this card?
• Of course, if anyone has any documentation/software or other info for this particular card, feel free to share it in this thread!