LDA myValue
CMP #3
BNE .skip

;if we got to here, "myValue == 3" evaluated to true.

LDA myOtherValue
CMP #5
BNE .skip

;if we got to here, both "myValue == 3" and "myOtherValue" == 5 evaluated to true.

STA myResult         ;any nonzero value is considered TRUE, so we've stored 5 into myResult.

.skip: