|
|
Copyright 1991 David Jurgens |
CMPXCHG - Compare and Exchange
Usage: CMPXCHG dest,src (486+)
Modifies flags: AF CF OF PF SF ZF
Compares the accumulator (8-32 bits) with "dest". If equal the
"dest" is loaded with "src", otherwise the accumulator is loaded
with "dest".
Clocks Size
Operands 808x 286 386 486 Bytes
reg,reg - - - 6 2
mem,reg - - - 7 2
- add 3 clocks if the "mem,reg" comparison fails
- see Instruction Timing
|
|
| Esc or Alt-X to exit |
cmpxchg |
Home/PgUp/PgDn/End ←↑↓→ |