Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Problem #3 [25 pts] Consider the following code written in AVR assembly. Explain in words what the program accomplishes when it is executed. That is,

image text in transcribed

Problem #3 [25 pts] Consider the following code written in AVR assembly. Explain in words what the program accomplishes when it is executed. That is, explain what it does, how it does it, and how many times it does it. What is the value of location CTR when the execution completes and how many times is the LOOP executed? How much memory is allocated in SRAM? .ORG Ox0046 LDI XH, high (CTR) LDI XL, low (CTR) LDIR31, Oxla LDI R17, 8 CLR R6 LOOP: CLC ROR R31 BRCC NEXT INC R6 NEXT: DEC R17 BRNE LOOP ST X, R6 DONE: JMP DONE .DSEG .org $0104 CTR: .BYTE 1 Extra Credit [2 pts] Considering the portion of AVR code above that is shown in bold text. Which assembly instruction is unnecessary? In other words, which assembly instruction in the bold section) could be deleted while still retaining the exact same program functionality? Problem #3 [25 pts] Consider the following code written in AVR assembly. Explain in words what the program accomplishes when it is executed. That is, explain what it does, how it does it, and how many times it does it. What is the value of location CTR when the execution completes and how many times is the LOOP executed? How much memory is allocated in SRAM? .ORG Ox0046 LDI XH, high (CTR) LDI XL, low (CTR) LDIR31, Oxla LDI R17, 8 CLR R6 LOOP: CLC ROR R31 BRCC NEXT INC R6 NEXT: DEC R17 BRNE LOOP ST X, R6 DONE: JMP DONE .DSEG .org $0104 CTR: .BYTE 1 Extra Credit [2 pts] Considering the portion of AVR code above that is shown in bold text. Which assembly instruction is unnecessary? In other words, which assembly instruction in the bold section) could be deleted while still retaining the exact same program functionality

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image_2

Step: 3

blur-text-image_3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Database Design And Relational Theory Normal Forms And All That Jazz

Authors: Chris Date

1st Edition

1449328016, 978-1449328016

More Books

Students also viewed these Databases questions