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First post, by hexcor

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I recently picked up an MT-32 for my Toshiba Satellite 440CDT (pentium 133 MMX) (https://support.dynabook.com/support/staticCo … omTOCLink=false) . Since it lacks a gameport, I pickedup a port replicator that has one. The soundcard is a SBPro (or comparable). I setup SoftMPU and it doesn't seem to be working. When I try various games (QG1, DOTT) there's not music. Not sure if I was doing something wrong, I did add /mpu:330 /sb:220 /irq:7 matching the system settings. Should I change the IRQ to 9 (Problem: Some games expect to find an MPU interface on IRQ 2, but my sound but my sound card doesn’t support it. Solution: Configure your sound card to use IRQ 9.)?

Reply 1 of 4, by schlomoe99

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I hope the IRQ 2/9 option works for you. Otherwise, did you add the SBMIDI switch?

From the Github page for SOFTMPU:
https://bjt42.github.io/softmpu/

The optional /OUTPUT:SBMIDI switch forces Sound Blaster MIDI to be used. This mode is intended for use with the Sound Blaster Pro 2 and other sound cards without a hardware MPU-401 interface. Game compatibility may be reduced.

It won't work on all games. On my desktop SB Pro 2 it didn't work on Sim City 2000 for instance, but it did work on Warcraft II.

Alternatively, you can try the serial interface option, though you'll need to build or buy your own cable:

USING SOFTMPU: SERIAL MIDI MODE Run SoftMPU specifying the serial interface to be used and the base port address of the MPU-401 […]
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USING SOFTMPU: SERIAL MIDI MODE
Run SoftMPU specifying the serial interface to be used and the base port address of the MPU-401 interface, e.g.

SOFTMPU.EXE /MPU:330 /OUTPUT:COM1

A Sound Blaster base port address and IRQ can optionally be specified if MPU-401 interrupts are required.

Here you will find an introduction to a DB9 to midi cable for this option:
MT-32 cable options
Roland MT32 - Direct Connection to Serial / COM1 SoftMPU

Reply 4 of 4, by HangarAte2nds!

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hexcor wrote on 2021-11-22, 02:11:

I recently picked up an MT-32 for my Toshiba Satellite 440CDT (pentium 133 MMX) (https://support.dynabook.com/support/staticCo … omTOCLink=false) . Since it lacks a gameport, I pickedup a port replicator that has one. The soundcard is a SBPro (or comparable). I setup SoftMPU and it doesn't seem to be working. When I try various games (QG1, DOTT) there's not music. Not sure if I was doing something wrong, I did add /mpu:330 /sb:220 /irq:7 matching the system settings. Should I change the IRQ to 9 (Problem: Some games expect to find an MPU interface on IRQ 2, but my sound but my sound card doesn’t support it. Solution: Configure your sound card to use IRQ 9.)?

I was recently looking at specs on this vintage of toshiba. I have a 430CDT and 445CDX. I gamed on the 445 back in the day because it has been in my family since new. I haven't tried it recently but IRQ9 seems to stick in my head. In any case, I am pretty sure it is a Yamaha card with OPL-3 and MPU-401 compatibility. I think it is SB16 compatible on the usual 220/7/1 settings. I will be taking a closer look at the drivers in the near future...
Wondering if yours is in its original form or if it has been significantly altered, software wise... Original OS was the original build of Win98. It wasn't altered to suit the mfg like these days. Everything the mfg added was more in the form of drivers. Some general software that wasn't mfg specific if you had the models ending in 5. My 445 CDX had Cakewalk installed from the factory which suggests what you should be able to expect from that Yamaha card.