ISA MPU Card issue \ VOGONS

ISA MPU Card issue

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First post, by Doombringer4u2nv

Posted on 2025-02-16, 01:45

Doombringer4u2nv Offline

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So I received a PC MIDI Card from Serdashop and get no music. I have dos 6.22. Simple setup. Midi out from card to Midi in on the back of a SC-55. Then output from Sc-55 to speakers.

I ran the mqdiag program and the card is detected with default 330, irq 2.

I moved the card to another ISA slot and nothing. Any suggestions?

BTW, the SC-55 works fine with my picogus.

ABIT BH-6, Pentium III 500, 256 mb RAM, Nvidia MX420 Video Card,SB16 CT1770 SCSI, GUS David Larsson Clone, SCSI ZIP 100mb, SCSI TEAC CDROM, IDE Hitachi CDROM, IDE LS-120 Drive, 3.5 Floppy, Viewsonic PF790 Monitor (DOS6.22, Win98 SE)

Reply 1 of 5, by Doombringer4u2nv

Posted on 2025-02-16, 03:34

Doombringer4u2nv Offline

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Solved. The Midi out cable what comes with the picogus only works with the picogus. I changes cables and its working now. I ASSumed midi cables where all wired the same.

Reply 2 of 5, by Pierre32

Posted on 2025-02-16, 04:25

Pierre32 Offline

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That's an interesting tidbit. I would have made the same assumption as you.

The MIDI output port uses the MIDI TRS "Type A" standard (note that the TRS cables that come with the Orpheus and PCMIDI cards from PCMIDI.eu are "Type B" and will not work on PicoGUS).

https://github.com/polpo/picogus/wiki/Configu … ng-your-PicoGUS

Reply 3 of 5, by gdjacobs

Posted on 2025-02-16, 21:41

gdjacobs Offline

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The beauty about standards is we have so many of them.

All hail the Great Capacitor Brand Finder

Reply 4 of 5, by polpo

Posted on 2025-02-20, 22:22

polpo Offline

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To give a little background, when I designed the MIDI out port on the PicoGUS I went with Type A because that's what the MIDI Manufacturers Association officially recommends. If I knew at the time that the PCMIDI cards used Type B, I would have gone with that instead.

Reply 5 of 5, by SScorpio

Posted on 2025-02-20, 23:53

SScorpio Offline

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polpo wrote on 2025-02-20, 22:22:

To give a little background, when I designed the MIDI out port on the PicoGUS I went with Type A because that's what the MIDI Manufacturers Association officially recommends. If I knew at the time that the PCMIDI cards used Type B, I would have gone with that instead.

It's just T-568A vs T-568B all over again. US uses A, Europe uses B.

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