1 Mar
2015
1 Mar
'15
2:03 p.m.
On 3/1/2015 2:56 PM, Johnny Billquist wrote:
I don't think so. On the PDP-8 at least, the
increment of the PC is done
at different clock phases for different reasons, and they are not
combined. I/O peripherals can also increment the PC, and it happens at a
defined time.
The clock state machine of the PDP-8 is somewhat complex compared to
more "modern" machines.
I suspect all of the classic machines of the 60's era, would have
similar timing since it was the split cycle of core memory the defined
your major timing states.
Johnny
Any how, Bitsavers has all the
details where hard ware manuals said more
that "Made in <country of the week>.