 8bit multiplication


 MOVF b, W
 MOVWF 0x74
 MOVF 0x74, W
 MOVWF __pcstackCOMMON
 MOVF a, W
 BCF PCLATH, 0x4
 BCF PCLATH, 0x3
 CALL 0x7CC
 MOVWF 0x75
 MOVF 0x75, W
 MOVWF c