rasteri
Scancode set 3 support?
Hi, SGI machines require PS/2 scancode set 3 support. So HIDMan doesn't work on them,
Oh interesting, I've tried HIDman on some SGI machines and it seemed to work but I guess they're not all the same.
I'll look into it
@bstrobel has implemented SGI support in ps2x2pico, maybe you can reuse some parts: https://github.com/No0ne/ps2x2pico/pull/39
Let me know if you need anything. Although I don"t have time to code at the moment I can still provide you with traces etc. I traced the communication of a few PS/2 keyboards with my SGI O2 using a logic analyzer to understand the protocol better. BTW the usually referred to documentation regarding scan code set 3 is not quite complete. You really need to trace it.
Also, there is definitely variability of PS/2 support between different SGI machines. I have couple of Filco Majestouch 2 TKL (that has PS/2 backward compatibility), One partially works with Indigo 2, one doesn't at all. But both work fine with O2. Haven't tried them yet with Indy or Octane.
To be honest seeing the variety of problems regarding normal modern USB keyboards with normal USB communication I wouldn't put too much trust in the claimed PS/2 compatibility of them. Your really should test your SGIs with original 1990s and 2000s PS/2 keyboards. If they work you could trace the communication with a cheap $10 logic analyzer and use the code of ps2x2pico as a basis for implementing scancode set 3 support in HIDman. I guess the changes will be minor. I can support you with that a bit if you want.
Or you could just build a ps2x2pico yourself (investment of about $10 to $15) and try it out. Maybe (I even dare to say probably) it works out of the box.
I probably will, I ordered some level shifters, I also have DreamSourceLab logic analyzer so I can hook it up. I just have too many projects pending ...
I would like to help. Trying to get a Leopold FC900R working on my SGI O2. I get very erratic behavior with this keyboard and a PS/2 adapter. Like keys randomly stop working and such. Board seems to work fine in USB mode on a mac or pc. I don't know if it is a scancode issue or I need a different PS/2 adapter.
