On 10/24/2018 01:11 PM, ben via cctalk wrote:
On 10/24/2018 10:31 AM, Marc Howard via cctalk wrote:
You know that since you mentioned possibly using CMOS
22V10's why not just
build a board around AMD 29XX bit slice parts. They
actually predate
22V10's by quite a bit and you can pretty much implement
what every you
want to without rewiring.
Marc
* LOW POWER and REPROGRAMABLE * reglar 22V10's are 100 ma
per chip, and I can buy them online. I have 5 2901's but I
can only find them on ebay now. If I design a register
based machine I have them, other wise
TTL is better for odd sized word lengths.
Ben.
Well, I built a 2903 + 2910 32-bit microcoded machine in
1982 or so. See
http://pico-systems.com/stories/1982.html
for gory details. But, today, it would make WAY more sense
to do it with FPGAs. Want to try an experiment? Don't get
out the wire-wrap gun or soldering iron, make a copy of the
FPGA files and edit away. If it doesn't work, you don't have
to undo the wiring changes! Also, the FPGA version might be
as much as 10 times faster.
Jon
