Bob wrote...
The paper tape loader ROM will actually
'work', if your 12531 interface
board happens to power-up in receive mode.
Noted... with your caveats.
Interesting.
This thread jostled a memory cell in my brain... I do remember one of my
machines having a loader room with a sticker on the top that said "12531". I
should locate it and dump the contents and see whats up there.
Jay