What do I have to write in 6502 Assembly if I want to check whether an operation produced an overflow or an underflow?
Code:
DEC Value
XXX @underflow
; --> If Value jumped from $00 to $FF, goto @underflow.
; --> What needs to be written for XXX?
JMP @noUnderflow
@underflow:
; ...
@noUnderflow:
; ...
XXX @underflow
; --> If Value jumped from $00 to $FF, goto @underflow.
; --> What needs to be written for XXX?
JMP @noUnderflow
@underflow:
; ...
@noUnderflow:
; ...