They're wide PDP-8s. Or rather, the PDP-8 is a
narrow PDP-4.
I know that! ;) what I don't know is all them little details I know so
well for PDP-8.
I would want a
machine that would fit in nx4 or nx8 format parts.
Doesn't particularly help if you're putting it in an FPGA.
Why would I want to use them... &-) I was thinking interms of machine
that work in "ttl" or maybe GALs. FPGAs want those funny sockets to hold
all those pins and they are a bear to to probe a particular gate under a
scope after delidding it. ;)
Actually a discussion of PDP-4/7/9/15 would be of interest as those are
thos ones I really do not know beyond trivial.
Allison