small quistion

[aoamb83]

hi all
iam new in programing with assembly
my problem is that i want to check two i/p pins
that may have the following combinations
00 01 10 11
if i find 00 i will desplay some thing on LCD
01 i will desplay another thing
and so on
i know how to desplay my problem is to recognize the two digits that i will
desplay somthing according to them
it`s like if condition
if 00 call or goto (....)
if 01 call or goto (....)
and so on
note : i use pic16f84a

thanx at all

 

[Papabravo]

if     ((variable & 0x03) == 0x00) found_0() ;
else if((variable & 0x03) == 0x01) found_1() ;
else if((variable & 0x03) == 0x02) found_2() ;
else if((variable & 0x03) == 0x03) found_3() ;
else hole_in_STC() ;

Exactly one of the functions will be called each time the code is entered. STC is the Space Time Continueum. A good optimizing compiler will evaluate the expression once and test the result against the constants. A bad compiler will do the stupidly obvious thing and evaluate the expression four times.