6502 cycles and subtleties (was Re: Assembly on a Apple IIc+)

Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ] [ by messages with attachments ]

From: Eric Smith <eric_at_brouhaha.com>
Date: Sun Feb 9 12:58:00 2003

> Are you sure? My understanding is that PLP and PLA increment the stack
> pointer *before* fetching the byte off the stack.
[...]
> Maybe you're thinking of PHP and PHA ([SP]:=A; SP:=SP+1), which take one
> cycle less than PLP/PLA?

You're right, I was confused.
Received on Sun Feb 09 2003 - 12:58:00 GMT

This message: [ Message body ]
Next message: Jeffrey S. Worley: "Odd ideas that I've had lately..."
Previous message: TeoZ: "PS2 Mouse"
In reply to: pete_at_dunnington.u-net.com: "6502 cycles and subtleties (was Re: Assembly on a Apple IIc+)"

Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ] [ by messages with attachments ]

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:35:54 BST