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Yeah, if you're on Windows you can even output to the built-in synth with -midiout "Microsoft GS Wavetable Synth". It sounds like crap, especially if the software expects an MT-32, but it should be enough for testing.

And, yes, other systems work. I just tried the ISA MPU-401 on one of the PC drivers and it's fine.

That 0,0 should indeed be 0,3. If there's some easy software to test (ideally something where I just boot it with the card attached and it's supposed to play MIDI) I can take a look.

It seems the problem is the ports are at even addresses. I tried uses 0x00ff for the mask but that doesn't work with the 32bit address space of the 9821 and 0x00ff00ff fails with the 16bit address space of the 9801rs. It'll probably need a trampoline.

Edit: oops, everything okay, the rs was crashing because it was mapping a missing device.

Ahh, ok. That makes sense.

Why should it be 0,3 ? It was 32-bits mask 0x00ff little-endian before, that means address 0 only in my book.

Hint: that was converted through a lua program. When a conversion program fucks up while you have 35K drivers, it shows :-)

It's (supposed to be) a 16 bit mask 0x00ff as per crazyc's fix, there are two addresses in use.

Oh cute. then a map(0, 3).umask16(0x00ff).(...) would work for both 16 and 32 bits.

OG.

Another regression I've noticed after updating to the latest build... the floppy drives seem to have stopped working entirely. After some tests I think it's probably related to this commit (I guess because of the DMAC changes):

https://github.com/mamedev/mame/commit/fbcc6c1b37266e328cb87028e380fb29841ba590

I don't know if this affects other drivers, but this is a pretty common device, so it's likely.

I'd see if it's possible to fix PC98 to work with the changes, because they seem pretty reasonable hardware-wise.

That change also breaks the qx10.

Edit: Both use active low dreq. He changed the meaning of the request bits in the status register from logical request status to line level (but only partially) which breaks other things.