26 Jan
2015
26 Jan
'15
1:56 p.m.
From: B Degnan
there was a "rev 1" PDP11/10 that was used
as a process control system.
You could buy the 11/20 version that had the front panel. Otherwise
they were very similar/same systems.
According to my 1971 11/20-15-R20 handbook, the 11/15 (the 'rev 1' 11/10,
KC11 processor) did have one significant difference from the 11/20, which is
that it only supported one interrupt level, instead of four (see table pg.
2). I seem to recall reading that in other places, too.
Of course, according to that table, the 11/05 (KD11-B) also only supported
one interrupt level, so maybe that table is confused.
Noel