12 Jul
2012
12 Jul
'12
8:45 a.m.
The VAX would have had an interface board (CIB?) which
connected to
this card, it's just an extension of the PDP's QBUS (the chips are
probably just some buffers/line drivers). The logic for the interface
was on the VAX card.
A technical description of the CIB board is on bitsavers:
http://www.bitsavers.org/pdf/dec/vax/780/EK-KC780-TD-001_ConsoleIntfTechDes…