ECE243 Practice Question Website

Assembly Programming Questions

Question 26

	COUNT 	equ 	10
	TUTOR 	equ 	228
	PROGRAM	equ 	$1000
		org 	PROGRAM
		move.w 	#0,d0		;Point A
		move.w 	#COUNT,d1
	LOOP 	subq 	#1,d1
		addq 	#1,d0
		tst 	d1
		bne 	LOOP
		move.w 	d0,RESULT
		move.w 	#TUTOR,d7
		trap 	#15
	RESULT 	ds.w 	1
		end

Specify addresses for each instruction & for RESULT in the boxes below.

Address starting at point A

Answer

Either of the following is correct. The second if you used absolute short addressing for RESULT

Address starting at point A

$1000

$1004

$1008

$100A

$100C

$100E

$1010

$1016

$101A

$101C

Address starting at point A

$1000

$1004

$1008

$100A

$100C

$100E

$1010

$1014

$1018

$101A