I now have 3 different revisions of the WeeCee that I've named WeeCee Redux. my goal was originally just to port over the original WeeCee project that Rasteri designed into KiCad but I couldn't find an elegant way to do that, so I measured everything out by hand and laid it out in KiCad to try to match as closely as possible to the front and back plates that were already made.
As I got a little further into the project and figured out how to do more, I started swapping certain things out that I felt would be appreciated on this project like a power on/off circuit, USB C instead of Micro USB for the power adapter, and a reset button.
After ordering a batch of those and fixing some minor issues I decided to swap the PS/2 port out for the HIDman circuit which worked great!
The next thing I did was improve the sound chips ground planes and power filtering as well as adding a power LED and SD activity LED. This necessitated creation of new plates for both the front and back.
The other 2 revisions I made were both including the Raspberry PI CM4 module. 1 added it to the existing revision I had using the crystal chip for sound and the other, which is a bit more ambitious, swaps the crystal chip for a PicoGus.
I haven't been able to get this one working completely yet unfortunately as I can't get the PicoGus to detect using pgusinit but once that problem is resolved, this will be a very nice little device for most things that don't require 3d acceleration! the CM4 alone adds a ton of potential features like floppy disk emulator, Wi-Fi, MT-32PI, emulation, etc. I'm getting closer to releasing the CM4 versions but the initial version i'm calling "original recipe" is a basic WeeCee with the quality-of-life improvements I made. This one works very well and I've had it running stress tests in windows 98 non-stop on my desk at work for a couple weeks now.
Here's some pictures of that version:
once I do the final testing on this one I will make the project available for anyone who wants them on Github.
Here's a quick shot of the version with the CM4 and the Crystal chip:
and FINALLY the bane of my existence for the past 4 months, what I'm referring to as the TL3 edition as it's based on the TinyLlama 3 concept:
to be clear, the only thing that doesn't work on the TL3 version is the PicoGus. it flashes no problem, and the activity light goes on but it's not detected on the bus despite a regular PicoGus being detected using the SoM while on the PC/104 motherboard I made with 8 standard ISA slots, so I know it's not a SoM compatibility issue. I will have to look more into it in the near future but I felt I was comfortable enough at least posting SOMETHING about it now.
