list p=16F84A
#include <p16f84a.inc>
RES_VECT TD1EX2 0x0000
GOTO START
CBLOCK 0x0C
X1
X2
ENDC
MAIN_PROG TD1EX2
START
BSF STATUS, RP0
MOVLW 0
MOVWF TRISB
BCF STATUS, RP0
GOTO MAIN
MAIN
MOVLW 40
MOVWF X1
MOVLW 60
MOVWF X2
GOTO ADDR_INDIRECT_X2
ADDR_INDIRECT_X2
MOVLW H'0D'
MOVWF FSR
MOVLW B'01010000'
MOVWF INDF
GOTO ADDR_INDIRECT_PORTB
ADDR_INDIRECT_PORTB
CLRF FSR
CLRF INDF
MOVLW H'06'
MOVWF FSR
MOVLW X2
MOVWF INDF
CLRW
END
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