Microprocessors Class

Conditional Execution using Bit Test (btfsc).

Explain, which is the operation of following code? Which is the output of the code?

INCLUDE "P18F242.INC"

CBLOCK 0x0

loc,out

ENDC

org 0

goto main

org 0x0200

main

;movlw 0

movlw 1

movwf loc

Ltop

btfsc loc,0

goto loc_lsb_is_1

movlw 4

movwf out

movlw 2

movwf out

movlw 3

movwf out

loc_lsb_is_1

movlw 1

movwf out

movlw 6

movwf out

movlw 5

movwf out

movlw 8

movwf out

goto Ltop ; loop forever

end