14 Nov
2005
14 Nov
'05
8:14 p.m.
Don North wrote:
Doing some math, 2GHz/100KHz is 2000MHz/0.1MHz or
20,000. At 6X the
cycle count is then 20K/6 = 3333 (not 3.3M).
One would think it takes well less than 3000 X86 instructions to
emulate a PDP-8 instruction (assuming one instr per clock).
I would say it takes a few instructions since you have to mask for 12
bit words, and remember the PC is running windows and all
sorts of other stuff. The point is the emulation is at least 6x faster
or more compared to
the original. Faster may not allways be better for emulation.
Jim Battle wrote: