From: Marc Howard: Saturday, February 20, 2016 5:29 PM
I'm looking for the schematic for a PA68-F. It's a two high collection of single width M series modules that implements the paper tape high speed reader/punch control for positive bus machines.
Does anyone out there know where I can download this document?
I believe what you are looking for begins on page 53/125 of this document: bitsavers.org/pdf/dec/pdp8/typeset8/DEC-08-HMMPA-A_D_typeset8_PosLogicEngrDrws_Apr73.pdfVince