When I last wrote about the IBM5160 I was in the process of stripping down and rebuilding, it turned into a brief history of disk drives, mainly because I didn't have an XT compatible keyboard. The system was sitting there showing keyboard error (301) and requesting F1 be pressed to continue.
This is an old post, preserved for reference.
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Vintage Computer Forum. It appears I'm not the only one in this predicament, and someone had already designed such a device, using an 8 pin PIC. Rather than reinvent this particular wheel, I programmed the firmware supplied by Chuck(G) in this post into a PIC12F629 and built the circuit on breadboard. It worked first time. Further information and schematics here.
2022 Update: The next article will arrive at some point. I really must get around to getting all the 5160 bits out of storage and build up a working machine.