29 May
2012
29 May
'12
3:22 a.m.
On Sun, 27 May 2012, Jon Elson wrote:
> Working on a PDP-11/05. The front panel appears to
work, I can step through
[...]
is likely the write command is not getting to the
memory. There are a
bunch of ways to make a front panel work, but since this is a raw logic
machine (no microcode) they probably worked hard to minimize the logic
Stop, the 11/10 and 11/05 are fully microcoded machines. So much that even
the minimalistic switch front panel is handled in the CPU microcode. I've
learned that when I repaired our 11/10.
Christian