Re: Why VAX Was the Ultimate CISC and Not RISC

Lawrence D'Oliveiro <ldo@nz.invalid> writes:

How many clocks did Alpha take to process each instruction?

For the 21064 see slide 15 of
<https://people.eecs.berkeley.edu/~randy/Courses/CS252.S96/Lecture19.pdf>

I.e., about 1 CPI for Ear, and about 4.3 CPI for TCP-B, with other
benchmarks in between.

Theoretical bottom CPI (peak performance) of the 21064 is 0.5.

- anton
--
'Anyone trying for "industrial quality" ISA should avoid undefined behavior.'
  Mitch Alsup, <c17fcd89-f024-40e7-a594-88a85ac10d20o@googlegroups.com>