bad6502 update 9 - now as a Raspberry Pi 4 Hat

The chip shortage is upon us - nothing can fix that for now.
So let's build a vintage style computer from parts that are available - and as little of them as possible. Impossible ? OpenSource ?
Update 8:
- I updated the PCB layout to a Pi 3/4 Hat, but kept the 5V in and power switch
Source files are available here: (but the repos may lag behind)
github.com/dhe...
Hardware (PCB) files:
easyeda.com/dh...
About the bad6502:
Presenting the bad6502, the 35 Dollar 6502 based computer that has needs no chips.
Features (subject to change):
- HDMI
- USB keyboard / Mouse
- 1+ MHz WDC65C02
Ok, honestly: ... its a 65C02 with emulated hardware on a Raspberry Pi Zero 2W. But it's cheap and fun and available now. Still fiddling with the hard and software a lot.
More soon !
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www.paypal.me/...
This helps a lot in keeping the channel and its content free and un-influenced.