14 Jul
2000
14 Jul
'00
8:32 a.m.
I wrote:
It would be nice to see some of these preserved, but
for my own part I'm
going to draw the line at 785s.
Bill wrote:
At least those were Schottky TTL reimplementation of
the 11/780 (IIRC).
Rumor says it was done because the 8600/8650 was running late in design.
One of the things I like about the 785 is that the entire control store
(8 Kwords of 99 bits) is WCS (RAM). On the 780 the main control store was
PROM, although there was 1 or 2 Kwords of WCS for diagnostics, and an
optional 1 or 2 Kwords for user WCS or G format floating point.