- A
substitute for defective logic!
One example : remove the (defective) boards from the
card reader (DEC aka Documation M200) and replace it
with a single Core and I/O board (+ software...)
I sometimes wonder if I'm the last person left who can actually do
fault-finding!.
Put it this way, it's a lot easier for me to find the dead chip in an
M200 (or in anything else for that matter) and replace it than to fight
with some FPGA-based thing...
Well, I suppose that would depend on the availability of documentation, etc.
for the old part. It might (possibly) make sense to bypass an old
undocumented whatsit with something documented (new or not).
I don't have any info on the M200, for example (if there is such a thing).
BTW, it isn't really relevant to your point, but the Blinkenlights thingy is
TTL.
Vince