Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

4. Hand assemble the following code. Briefly explain (but in detail) the function of this code ORG LDX LDAA STAA $0 #$1000 ;pointer to data

image text in transcribed

4. Hand assemble the following code. Briefly explain (but in detail) the function of this code ORG LDX LDAA STAA $0 #$1000 ;pointer to data #$10 ;counter value $1100 counter will be saved in memory to free up a CPU register ;assembler directive (origin) to tell where code will be placed in memory LOOP: LDAA get 1st data value $10,X get 2nd data value LDAB SUM AB SHFB R STAB INX LDAB LDAA SUM BA BEQ STAA BNE data1 data2 divide sum by 2 $20,Xstore ave. value #$FF $1100 increment pointer ;-1 in 2's complement format ;count = count-1 DONE branch to done if count is zero $1100 ;else, save counter value LOOP and repeat loop DONE loop forever DONE: BEQ Why do we have to save the counter value in memory during each pass of the loop? How many times (decimal) will the loop execute? 4. Hand assemble the following code. Briefly explain (but in detail) the function of this code ORG LDX LDAA STAA $0 #$1000 ;pointer to data #$10 ;counter value $1100 counter will be saved in memory to free up a CPU register ;assembler directive (origin) to tell where code will be placed in memory LOOP: LDAA get 1st data value $10,X get 2nd data value LDAB SUM AB SHFB R STAB INX LDAB LDAA SUM BA BEQ STAA BNE data1 data2 divide sum by 2 $20,Xstore ave. value #$FF $1100 increment pointer ;-1 in 2's complement format ;count = count-1 DONE branch to done if count is zero $1100 ;else, save counter value LOOP and repeat loop DONE loop forever DONE: BEQ Why do we have to save the counter value in memory during each pass of the loop? How many times (decimal) will the loop execute

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

Learning PostgreSQL

Authors: Salahaldin Juba, Achim Vannahme, Andrey Volkov

1st Edition

178398919X, 9781783989195

More Books

Students also viewed these Databases questions

Question

What is the purpose of a balance sheet?

Answered: 1 week ago

Question

How many Tables Will Base HCMSs typically have? Why?

Answered: 1 week ago

Question

What is the process of normalization?

Answered: 1 week ago