exxos's Atari, Amiga & retro forum

PicoGUS PGUSINIT.PRG v3.6.0
I spent some time today building a dev environment to compile the PicoGUS PGUSINIT.PRG that will work with the latest firmware version.

Whilst it seems to work and PGUSINIT.PRG v3.6.0 compiles after some tweaks to the .C and .H files. I offer it here with the advice it is for testing only. Your mileage may vary on using it.

Basic functionality seems to allow switching /mode and /save. The PGUSINIT.PRG is using the new v4 Protocol version.

The latest PicoGUS firmware v3.1.0 seems to have limitations when compared to the v.2.2.0 version. SB mode is not working the same for me with firmware v3.1.0. MIDI works the same, but YM audio through Soundblaster is not working.

Anyway, here is the PRG for you to play with.

PicoGUS PGUSINIT.PRG v3.7.0
Again, it seems to work and PGUSINIT.PRG v3.7.0 compiles after some tweaks to the .C and .H files. I offer it here with the advice it is for testing only. Again, your mileage may vary on using it.

Basic functionality seems to allow switching /mode and /save. The PGUSINIT.PRG is using the new v4 Protocol version. Mode switching seems better in this version compared to v3.6.0. The source code for PGUSINIT has been totally refactored in the original source code.

Looks like the associated v3.2.0 PicoGUS board firmware fixes the SB mode for Raven. :D On my test Raven, Soundblaster mode now works the same as v2.2.0 firmware and YM audio is back through the PicoGUS v2. Monkey Island 2 speech is back, and Doom sound effects are back. Both have MIDI still. All feeding through the PicoGUS in Soundblaster mode.

From my tests, it looks like most PGUSINIT / commands work fine apart from the /flash command. The new volume control commands work fine (/sbvol, /cdvol, etc).

The /flash command would be nice to get working to allow changing firmware in the PicoGUS whilst sat in the Raven ISA slot. I think the code is expecting DOS based file access and this is replaced by the Raven hard disk, so some code changes are probably needed. Will look into this when time allows.

/cd commands do not work as they need disk IO which is not compiled into the modified code.

Anyway, here is the latest PRG for you to play with along with the v3.2.0 firmware for the PicoGUS board.

Very very nice!!

Should it go onto the raven github?

@agranlund Can do, pull request sent. :)

Pull request is he whole picogus folder updated in raven\sw\isa\drivers\picogus containing source changes from PicoGUS repository and my tweaks to PGUSinit to compile Atari PRG.

PicoGUS PGUSINIT.PRG v3.7.0 (Flash version)

I spent some time today working through the code and with a little help from Microsoft Copilot, we managed to get the flashing command working on the Raven. :D

Code needed DOS.H replacing with an Atari MINT option and also allowing for big-endian file access, the UF2 file being read needed some byte-swapping code added.

I have tested this on my Raven and PicoGUS v2 and after bricking the PicoGUS a couple of times, the /flash command now works fine. I would recommend power cycling the Raven after flashing the PicoGUS firmware to ensure a full reset on the PicoGUS.

I have updated my Github repository with these updates and also the pull request.

That's awesome! I've mergen in your pull request :)

PicoGUS PGUSINIT.PRG v3.9.0a
Here is the latest version added to these posts from previous versions. Works with firmware v4.1.0 and v4.1.1-beta.1. Presumably will work when v4.1.1 firmware is finally released as well.

kodak80 wrote: 12 May 2026 10:01 PicoGUS PGUSINIT.PRG v3.9.0a
Here is the latest version added to these posts from previous versions. Works with firmware v4.1.0 and v4.1.1-beta.1. Presumably will work when v4.1.1 firmware is finally released as well.



Raven060 pgusinit-3.9.0a (for use with firmware 4.1.0).7z

I am afraid to install firmware 4.x because the system becomes unstable...

luciodra wrote: 13 May 2026 12:48

kodak80 wrote: 12 May 2026 10:01 PicoGUS PGUSINIT.PRG v3.9.0a
Here is the latest version added to these posts from previous versions. Works with firmware v4.1.0 and v4.1.1-beta.1. Presumably will work when v4.1.1 firmware is finally released as well.



Raven060 pgusinit-3.9.0a (for use with firmware 4.1.0).7z

I am afraid to install firmware 4.x because the system becomes unstable...

Are you using RVSND now? What settings do you have for RVSND.INI?

I changed MIDI-IN and MIDI-OUT to mpu401 in RVSND.INI. When I had these set to OPL the system kept locking up. Doom froze not long after launching. After changing RVSND settings, I now have PicoGUS v4.1.1-beta1 firmware loaded and things seem stable.

My PicoGUS is running in SoundBlaster mode.

Yes, it seems to be going better that way.