CMPSW - 8086

Compare words: ES:[DI] from DS:[SI].
Algorithm :
DS:[SI]-ES:[DI]
Sets flag according to Result : OF,ZF,AF,CF,SF,PF
if DF = 1 : SI=SI+2 and DI=DI+2
else : SI=SI-2 and DI=DI-2

Syntax

cmpsw

Example

.model small
.data
  s1 db 'hello World'
  s2 db 'hello World'
  ...
  ...
.code
  ...
  ...
  lea si,s1
  lea di,s2
  repne cmpsw
  ...
  ...
  end

Output / Return Value

Limitations

Alternatives / See Also

Reference