The one idea in assembly will be this:

mov R0, #Var_01
mov R1, #Var_02

mov R3, #6 ; for 6 variables
Loop: clr C
mov A, @R0
subb A, @R1
jz ZeroCase ; jump to Zero Case handler
inc R0
inc R1
djnz R3, Loop
jmp NextCode ; Done checking. Proceed further

Note that you need to have a jmp back to the Loop in the ZeroCase routine. Else your loop will terminate at the first case of Var_01 == Var_02.


Raghu