Analyze the following code, and determine which mathematical operation is taking place. Note that you may need to look up rol and lsl operations. You may use AVR references to do this. The correct answer must be written in ONE WORD as a response. ;Numbers in R1:R0 and R3 ldi R16, 0x03; 0x0325 to R1:R0 mov R1,R16 ldi R16,0x25 mov R0,R16 clr R2;R2 is needed to shift the number to left,zero at start ldi R16, 0x7A to R3 mov R3,R16 ;clr result in R6:R5:R4 clr R6 clr R5 clr R4 Loop1: lsr R3 brcc Loop2 add R4,R0 adc R5,R1 adc R6,R2 Loop2: lsl R0 rol R1 rol R2 tst R3 brne Loop1 ;Result is in R6:R5:R4,done

Np Ms Office 365/Excel 2016 I Ntermed
1st Edition
ISBN:9781337508841
Author:Carey
Publisher:Carey
Chapter8: Working With Advanced Functions
Section: Chapter Questions
Problem 4.4CP
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Analyze the following code, and determine which mathematical operation is taking place. Note that you may need to look up rol and lsl operations. You may use AVR references to do this. The correct answer must be written in ONE WORD as a response.

;Numbers in R1:R0 and R3
ldi R16, 0x03; 0x0325 to R1:R0
mov R1,R16
ldi R16,0x25
mov R0,R16
clr R2;R2 is needed to shift the number to left,zero at start
ldi R16, 0x7A to R3
mov R3,R16
;clr result in R6:R5:R4
clr R6
clr R5
clr R4
Loop1:
lsr R3
brcc Loop2
add R4,R0
adc R5,R1
adc R6,R2
Loop2:
lsl R0
rol R1
rol R2
tst R3
brne Loop1
;Result is in R6:R5:R4,done

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