[herio]

Commodore 128. To the point that I've made a replacement PCB for it and have started reverse engineering the system specific ICs. It was my first computer and I really like how much of a frankensteins monster it is (6502 and Z80 on the same bus, two video chips, etc)

https://github.com/jgrip/open128

[hakfoo]

One thing I'd love to see is a replacement PSU for the 128DCR. The flat 128 seems to have modern replacements, but I could not find one for the DCR.

I got a 128DCR as a thrift-shop find like 5 years ago, but it had an iffy PSU. I was lucky to find a surplus vendor with a cache of NOS units a few years ago. (If they had mentioned the word 'Commodore' on their product description, they would have likely long ago sold through, but it was mentioned on some old Amiga forum in passing) I'm sure you could bolt together two of those metal-cage SMPS units to provide the right voltages, but even a simple guide like "Buy models X and Y, and here's how you wire it to a harness" would be a useful resource.

[herio]

It can be done for sure I've seen some designs for it. The 128DCR generates +5, +12 and 9V AC so pretty straight forward.

Small meanwell unit and a transformer should do the trick.

https://www.youtube.com/watch?v=TCQE-rmo8XM for example.

[adg001]

Kudos! It is wonderful to see how the computers from Commodore's age invite us to explore them in full.