2. Fill in the values in the data RAM addresses specified for the following AVR code: LDI R18, $20 LDI R17, $0A RCALL DivideR18byR17 END1: 6 5 4 3 2 10 Address 7 RJMP END1 $200 $201 DivideR18byR17: $202 STS $200, R18 ; store Numerator $203 STS $201, R17 ; store denominator $204 CLR R16 ; clear quotient reg. DivLoop: INC R16 SUB R18, R17 BRCC DivLoop DEC R16 ADD R18, R17 STS $202, R16 STS $203, R18 RET
2. Fill in the values in the data RAM addresses specified for the following AVR code: LDI R18, $20 LDI R17, $0A RCALL DivideR18byR17 END1: 6 5 4 3 2 10 Address 7 RJMP END1 $200 $201 DivideR18byR17: $202 STS $200, R18 ; store Numerator $203 STS $201, R17 ; store denominator $204 CLR R16 ; clear quotient reg. DivLoop: INC R16 SUB R18, R17 BRCC DivLoop DEC R16 ADD R18, R17 STS $202, R16 STS $203, R18 RET
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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Transcribed Image Text:2. .
Fill in the values in the data RAM addresses specified for the following AVR code:
LDI R18, $20
LDI R17, $0A
RCALL DivideR18byR17
END1:
6 5 4 3 2 1
Address
7
RJMP END1
$200
$201
DivideR18byR17:
$202
STS $200, R18 ; store Numerator
$203
STS $201, R17 ; store denominator
$204
CLR R16
clear quotient reg.
DivLoop:
INC R16
SUB R18, R17
BRCC DivLoop
DEC R16
ADD R18, R17
STS $202, R16
STS $203, R18
RET
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