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Question 1.1. (TCO 1) The characteristics of dynamic memory
compared to static memory are (Points : 8)
higher density,
higher cost.
higher density,
lower cost.
lower density,
higher cost.
lower density,
lower cost.
Question 2.2. (TCO 1) Which of the following is volatile
memory? (Points : 8)
ROM
RAM
Flash
All of the
above
None of the
above
Question 3.3. (TCO 1) With a 24-bit address bus, we get
_____ bytes of memory space. (Points : 8)
24M
16M
64M
64K
Question 4.4. (TCO 2) Which bus is bidirectional? (Points :
8)
Address
Data
Control
All of the
above
None of the
above
Question 5.5. (TCO 2) Which bus carries memory contents?
(Points : 8)
Data bus
Address bus
Control bus
None of the
above
Question 6.6. (TCO 2) The address bus is __________. (Points
: 8)
bidirectional
unidirectional
able to be
programmed to be either bidirectional or unidirectional
None of the
above
Question 7.7. (TCO 3) To use JSR (or CALL) instruction, we
must initialize _____ register. (Points : 8)
X
Y
PC
SP
Question 8.8. (TCO 3) Find the value of Register A for the
following program.
LDAA #$55
EORA
#$AA (Points : 8)
A = $00
A = $FF
A = $7F
None
Question 9.9. (TCO 3) The dollar sign ($) that precedes
numbers in MC9S12 assembly language means that (Points : 8)
it is a
hexadecimal number.
it is a decimal
number.
it is immediate
mode.
All of the
above
None of the
above
Question 10.10. (TCO 3) The largest value (in hex) that can
be loaded into Register A of HCS12 is (Points : 8)
$08.
$255.
$65535.
$FF.
Page 2
Question 8.8.(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,000001
|
|
JSR
|
DELAY
|
|
JSR
|
DELAY
|
|
BCLR
|
PORTB,000001
|
|
JSR
|
DELAY
|
|
JSR
|
DELAY
|
|
BRA
|
BACK
|
(Points : 8)
|
75%
66%
50%
25%
|
|
Page 3
Question 1.1.(TCO 4) Write the assembly code to specify
a word constant named num1 that has a value of $5423.
a byte constant named num2 that has a value of 15.
a word variable named big. (Points
: 15)
|