Machine organization What addressesin memory containarray A? Which line sets the flag to check for end of loop? Which register points to array A elements?
Machine organization What addressesin memory containarray A? Which line sets the flag to check for end of loop? Which register points to array A elements?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Machine organization
What addressesin memory containarray A?
Which line sets the flag to check for end of loop?
Which register points to array A elements?
![### Translating JAVA Code to LC3 Assembly Language
#### Example JAVA Code:
The following Java program is designed to initialize an array with 10 elements, setting each element to 0:
```java
for (i = 0; i < 10; i++) {
A[i] = 0;
}
```
#### Equivalent LC3 Assembly Language Code:
Below is the corresponding LC3 assembly language code that performs the same operation:
```assembly
.ORIG x3000
; Initialize R0 and R5 to 0
AND R0, R0, #0 ; R0 <- 0
AND R5, R5, #0 ; R5 <- 0
; Load the base address of the array into R1
LD R1, ADDRA
; Load constant -10 into R2 for loop comparison
LD R2, MINUS10 ; R2 <- # -10
LOOP
; Add the contents of R0 and R2, store the result into R3
ADD R3, R0, R2
; If the result in R3 is zero, exit the loop
BRz DONE
; Add base address of array in R1 with R0, store in R4
ADD R4, R1, R0
; Store zero into the array element A[i]
STR R5, R4, #0
; Increment the index R0 by 1 (i++)
ADD R0, R0, #1
; Repeat the loop
BR LOOP
DONE
; Halt the program
HALT
; Memory addresses for base array address and constant
ADDRA .FILL x4000
MINUS10 .FILL #-10
.END
```
#### Explanation of LC3 Code:
1. **.ORIG x3000**: Start the program at memory location x3000.
2. **AND R0, R0, #0**: Initialize register R0 to 0. This will be used as the loop index.
3. **AND R5, R5, #0**: Initialize register R5 to 0. This represents the value to store in the array elements.
4. **LD R1, ADDRA**: Load the base address of the array into register R1.
5. **LD R2, MINUS10**: Load the](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe019b336-5feb-4f7e-87ed-8ba822dc1cb1%2F70364ba4-bd1b-4bdd-af69-cb09e497e0a8%2F8g5lbu7_processed.png&w=3840&q=75)
Transcribed Image Text:### Translating JAVA Code to LC3 Assembly Language
#### Example JAVA Code:
The following Java program is designed to initialize an array with 10 elements, setting each element to 0:
```java
for (i = 0; i < 10; i++) {
A[i] = 0;
}
```
#### Equivalent LC3 Assembly Language Code:
Below is the corresponding LC3 assembly language code that performs the same operation:
```assembly
.ORIG x3000
; Initialize R0 and R5 to 0
AND R0, R0, #0 ; R0 <- 0
AND R5, R5, #0 ; R5 <- 0
; Load the base address of the array into R1
LD R1, ADDRA
; Load constant -10 into R2 for loop comparison
LD R2, MINUS10 ; R2 <- # -10
LOOP
; Add the contents of R0 and R2, store the result into R3
ADD R3, R0, R2
; If the result in R3 is zero, exit the loop
BRz DONE
; Add base address of array in R1 with R0, store in R4
ADD R4, R1, R0
; Store zero into the array element A[i]
STR R5, R4, #0
; Increment the index R0 by 1 (i++)
ADD R0, R0, #1
; Repeat the loop
BR LOOP
DONE
; Halt the program
HALT
; Memory addresses for base array address and constant
ADDRA .FILL x4000
MINUS10 .FILL #-10
.END
```
#### Explanation of LC3 Code:
1. **.ORIG x3000**: Start the program at memory location x3000.
2. **AND R0, R0, #0**: Initialize register R0 to 0. This will be used as the loop index.
3. **AND R5, R5, #0**: Initialize register R5 to 0. This represents the value to store in the array elements.
4. **LD R1, ADDRA**: Load the base address of the array into register R1.
5. **LD R2, MINUS10**: Load the
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