Tony Duell wrote:
The
"bad" news is that a VAX-11/780 has a 500KHz clock (I had to
check I didn't write 500MHz there :-)
Are you dure? While I can well believe it averages 500,000 VAX
insturctions per second, the machine was very heavily microcoded, and I
refuse to believe the microcycle clock is anything like as slow as that.
I thought it was always considered a 1 MIPS machine.
During its time, it was the base for most of the benchmark
programs. (MIPS, MUPS, and all that)
It was. Well, but definition it's one VUP.
However, 'What is an instruction?'. I've heard it said that the 11/780
averaged 500,000 of its machine instructions per second, but that that
was about as much processing as 10^6 of other machine's instructions :-)
-tony