On Sat, 8 Feb 2003, Jim Keohane wrote:
> I'm either being imprecise or various readings I have done were
> imprecise. The reference to "one cycle" instruction may have been referring
> to there being 2 cpu cycles per clock cycle. Also, there's the "pipelining"
> some say the 6502 does when the last (or only) byte of an instruction is
> acted upon simultaneous to next instruction's 1st byte (opcode) being
> fetched
Ok, I didn't realize that "one cycle" != 1 CPU cycle. I just know that
I have a handy chart of how many clock cycles an instruction takes and the
minimum number for any instruction is 2. I guess the key phrase is
"clock cycles". Perhaps it's just semantics?
> Of course, we're talking Apple ]['s which, if I can trust my memory,
> steal every other clock cycle to refresh memory.
I don't know myself.
Sellam Ismail Vintage Computer Festival
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Received on Sat Feb 08 2003 - 13:58:00 GMT