deskthority

Conversion finished!
https://i.imgur.com/Yz9Fk2B.jpg

I decided to repurpose the original debug button as a reset switch.
The switch pin needed to be bent sideways along the pcb in order to avoid it getting grounded immediately on plug-in.

The only other necessary modification was to short both ...

Disassembly of the latching switches
https://i.imgur.com/GzOc2B6.jpg
https://i.imgur.com/vAoNbuG.jpg

The white cam track piece simply slides out.
The wire also simply slides out of a hole through the slider.
https://i.imgur.com/leCsDCd.jpg
https://i.imgur.com/QxhaTtJ.jpg

The space for the ...

Currently waiting on some teensy boards to arrive, but I believe the conversion should be a fairly simple controller replacement.
I've already done an initial tracing to find where the rows and columns lead to on the main IC.
https://i.imgur.com/9wqUmRQ.jpg
Columns are input through the ...

An NEC APC-H25 keyboard date stamped September 1986, very late production considering the original APC computer's release in 1982, by 1987 NEC would release the APC IV putting this unit nearly 3 generations after it's original design.
https://i.imgur.com/VN1etmK.jpg
https://i.imgur.com/ToJKBAE ...