Hand reverse-engineered PR-68 paper tape reader schematics, and suggested
PC parallel port interface design, are now available:
http://www.parse.com/~museum/pdp-common/peripherals.html
It's 1.5MB and PDF format.
Cheers,
-RK
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Robert Krten, PARSE Software Devices +1 613 599 8316.
Realtime Systems Architecture, Consulting, Books and Training at
www.parse.com
Looking for Digital Equipment Corp. PDP-1 through PDP-15 minicomputers!