N 4 question tco 5 which of the following

n 4.
Question :
(TCO 5) Which of the following instructions use the Z flag?
Question :
(TCO 5) For the program below, give the number of iterations in the L1
loop.
R0 EQU $1000
-1132510636 MultipleChoice 17 True
0 -1132510636 MultipleChoice 17
-1132510635 MultipleChoice 20 True
0 -1132510635 MultipleChoice 20

R1 EQU $1001
I_COUNT EQU 150
J_COUNT EQU 100
LDAA #I_COUNT
STAA R0
L2 LDAA #J_COUNT
STAA R1
L1 CLRA
NOP
NOP
DEC R1
BNE L1
DEC R0
BNE L2
H_1 BRA H_1
Student Answer: 150
100
450
250
Instructor
Explanation:
pages 110-112, Course Textbook
Points Received: 0 of 3
Comments:
Questio
n 6.
Question :
(TCO 5) Write an assembly-language program to add four to each
element of list1 and store it to the corresponding element of list2. Use a
loop.
ORG $2000
LIST1 DC.B 1, 2, 3, 4, 5
LIST2 DS.B 5
Student Answer: org $8000 ldaa #$5 staa count lddx #list1 ldy #list2 back ldd 0,x
-1132510628 MultipleChoice 30 False
0 -1132510628 MultipleChoice 30

add %0100 std 0,y inx inx iny iny decb bne back
Instructor
Explanation:
pages 107-110, Course Textbook
ORG $8000
LDAB #$5
LDX #LIST1
LDY #LIST2
THERE LDAA 0, X
ADDA #$4
STAA 0, Y
INX
INY
DECB
BNE THERE
1. Question :
(TCO 8) In the HCS12, which of the following registers is used to make
Port B output or input?
Student Answer: Accumulator B
PORTB

DDRA
DDRB
Instructor
Explanation:
pages 138-140, Course Textbook
Points Received: 3 of 3
Comments:
Questio
n 2.
Question :
(TCO 8) In HCS12, PORTA is __________ bit(s).
Student Answer: 16
one
eight
12
Instructor
Explanation:
pages 138-140, Course Textbook
Points Received: 3 of 3
Comments:
Questio
n 3.
Question :
(TCO 8) Which of the following will always make both bits, PB0 and
PB7, HIGH?

Question :
(TCO 8) The following program creates square wave pulses on PB0.
What is the duty cycle?
ORG $8000
LDS #$4000
LDAA #$FF
STAA DDRB
BACK BSET PORTB,%00000001
JSR DELAY
BCLR PORTB,%00000001
JSR DELAY
BRA BACK
-1132385849 MultipleChoice 14 True
0 -1132385849 MultipleChoice 14

Student Answer: 75%
66%
50%
25%
Instructor
Explanation:
page 145, Course Textbook
Points Received: 0 of 3
Comments:
Questio
n 5.
Question :
(TCO 8) In the following program, fill in the missing instruction to toggle
all of the bits in the PORTA.
LDAA #$FF
STAA DDRA
OVER LDAA #$55
STAA PORTA
STAA PORTA
BRA OVER
Student Answer: LDAA #$FF
LDAA #$00
-1132385848 MultipleChoice 24 False
0 -1132385848 MultipleChoice 24

LDAA #$AA
LDAA #$55
Instructor
Explanation:
pages 146-148, Course Textbook
Points Received: 0 of 3
Comments:
Questio
n 6.
Question :
(TCO 8) There are eight switches connected to PORTC and eight LEDs
connected to PTJ. Write a program to monitor the switches
continuously. Whenever the four leftmost switches are 1s, send $55 to
PTJ.