tecpossum wrote on 2026-07-06, 22:04:

In case someone finds it useful, a full face on shot of an assembled 0.4 board, as I don't think one has been posted: […]
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In case someone finds it useful, a full face on shot of an assembled 0.4 board, as I don't think one has been posted:

The attachment disappointment-v0.4-assembled.jpg is no longer available

And the obligatory "it works" shot with a PicoGUS and Doom in the background:

The attachment hey_it_works.jpg is no longer available

Initial testing was done with a H61MXV as someone was selling them on fleabay for 20 squids a pop with CPU and RAM, and it seemed a safe bet. Hopefully I'll find time this weekend to test some other candidates I have lying around.

Huge thanks to rasteri for making this project and releasing it.

Awesome!

Also I'm impressed with the number of PCBs in this photo

Now that you mention it, that is quite the stack.

Probably silly question, but can it support more than one card? Would it be illogical to make it into an isa card that slots into a backplane?

myne wrote on Yesterday, 04:36:

Probably silly question, but can it support more than one card? Would it be illogical to make it into an isa card that slots into a backplane?

The F85226 should be able to handle up to 3 ISA slots. Tiido has a design some pages back.

For dISAppointment, I think ISA risers/extenders can be used to provide additional slots.

tecpossum wrote on 2026-07-06, 22:04:

And the obligatory "it works" shot with a PicoGUS and Doom in the background:

PicoGUS in GUS mode also works ? In 0.2 adapter GUS mode works only in port mode, no DMA (Impulse tracker). Duke, Doom, Descent - no sound and/or hang.

vsharun wrote on Yesterday, 18:16:

PicoGUS in GUS mode also works ? In 0.2 adapter GUS mode works only in port mode, no DMA (Impulse tracker). Duke, Doom, Descent - no sound and/or hang.

That was in SB16 mode, and it had to be on IRQ7. IRQ5 resulted in no sound, even although every tool I tried said it was free. My assumption is the SuperIO swallowed it even with LPT disabled.

Didn't test GUS, but I can add it to the list for the weekend.

tecpossum wrote on Yesterday, 21:42:

vsharun wrote on Yesterday, 18:16:

PicoGUS in GUS mode also works ? In 0.2 adapter GUS mode works only in port mode, no DMA (Impulse tracker). Duke, Doom, Descent - no sound and/or hang.

That was in SB16 mode, and it had to be on IRQ7. IRQ5 resulted in no sound, even although every tool I tried said it was free. My assumption is the SuperIO swallowed it even with LPT disabled.

Didn't test GUS, but I can add it to the list for the weekend.

Fascinating, thanks. I'll check new 4.1.1 firmware this weekend.
Also hit the wall with IRQ5 few weeks ago.
Have you managed to run SB16 mode in Duke3D ? Or in SB Pro mode only ? In other words: high DMA, any issues ?