Systems Architecture
7th Edition
ISBN: 9781305080195
Author: Stephen D. Burd
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 8VE
When an instruction is first fetched from memory, it’s placed in the _________________ and then ________________to extract its components.
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Students have asked these similar questions
The _______________ is a register that holds the address of the next instruction to be executed.
What is the part of memory address space allocated for a given program responsible to
store:
a. The
program
instructions:
Instruction register holds each
instruction_
b. The data used by the program:
and the output is stored by ALU output register_
RAM
c. Temporary data:_
_ALU input register 1 and 2 for input
Objective
Learn the basic structure of an assembly program,
Data Memory Map
how to read the 8-bit instruction setreference and
Address Offset
Data
become familiar with a few commands.
Ob00001000
1
Ob10010011
Ob00000101
2
Lab
3
4
Task 1: Walk through the assembly program below
and fill out the data memory map (right). If a value
changes during the program, you only need to
7
record the final value. Unless otherwise stated all
8.
memory locations contain a value of 0.
10
11
12
:Program for task 1
:Definitions
13
14
.EQU myData=0x21
.DEF config=R4
15
Ob10100101
Ob10111001
16
17
:Main
18
.CSEG
19
.ORG Ox0000
20
LDI R16, Ob00001000
MOV RO, R16
21
22
LDI R16, Ob10010011
MOV R1, R16
23
24
LDI R16, Ob01010101
ANDI R16,Ob00001111
25
26
MOV R2, R16
ORI R16, Ob10100101
LDI R17,20
ADD R17, R16
27
28
29
MOV R3, R16
30
MOV config, R17
OUT O, R3
31
32
CBI 0,1
IN R5,0
STS myData, RO
SBI 1, 6
SBI 1,7
LDS R6, myData
33
1.
34
2
35
3
36
4
37
5
38
6.
Chapter 4 Solutions
Systems Architecture
Ch. 4 - Prob. 1VECh. 4 - ________________ generates heat in electrical...Ch. 4 - Prob. 3VECh. 4 - Prob. 4VECh. 4 - Prob. 5VECh. 4 - One _________________ is one cycle per second.
Ch. 4 - Prob. 7VECh. 4 - When an instruction is first fetched from memory,...Ch. 4 - Prob. 9VECh. 4 - Prob. 10VE
Ch. 4 - Prob. 11VECh. 4 - Prob. 12VECh. 4 - The contents of a memory location are copied to a...Ch. 4 - Prob. 14VECh. 4 - A(n) ________________ instruction always alters...Ch. 4 - Prob. 16VECh. 4 - A(n) ____________________ instruction copies data...Ch. 4 - The CPU incurs one or more _________________ when...Ch. 4 - The CPU incurs one or more _____ when its idle,...Ch. 4 - In many CPUs, a register called the _____ stores...Ch. 4 - The components of an instruction are its _____ and...Ch. 4 - Two 1-bit values generate a 1 result value when...Ch. 4 - A(n) _____ operation transforms a 0 bit value to 1...Ch. 4 - _____ predicts that transistor density will double...Ch. 4 - A(n) _____ is a measure of CPU or computer system...Ch. 4 - _____ is a CPU design technique in which...Ch. 4 - Describe the operation of a MOVE instruction. Why...Ch. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Prob. 4RQCh. 4 - Prob. 5RQCh. 4 - Prob. 7RQCh. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - How does pipelining improve CPU efficiency? What’s...Ch. 4 - Prob. 11RQCh. 4 - Develop a program consisting of primitive CPU...Ch. 4 - If a microprocessor has a cycle time of 0.5...Ch. 4 - Processor R is a 64-bit RISC processor with a 2...Ch. 4 - Prob. 4PECh. 4 - Prob. 1RPCh. 4 - Prob. 2RPCh. 4 - Prob. 3RP
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