CIRCLE WITH A DOT

@DrHyde you want a real one, so you need an older Type 5. You will need an active converter to turn the serial signal into PS/2 or USB though.

@bitsavers @ChuckMcManis @aka_pugs there is just too much abstract junk piled on!I ran into an interesting thing with my DIY z80 laptop, I decided to implement a rewritable function vector table, and I realized it took the code from being rather absolute, to something more virtual, it seemed a step away from the absoluteness I think we all enjoy about retro equipment.