14 Nov
2005
14 Nov
'05
10:31 p.m.
Jim Battle wrote:
The original PDP-8 took 10 clocks at 1 MHz to execute one instruction
really?
I'm probably off, but at a cocktail party I would would have said that
some instructions took 8 clocks (f0,f1,f2,f3,e0,e1,e2,e3) and some took
12 (f0-f3, d0-d3, e0-d3).
That's according to a recent look at the "blue book", but I may have
misunderstood. I did write up some verilog which uses those states and
it seems to be (mostly) correct, but it's done all debugged yet.
-brad