What does the following program do, assuming a set of integers are stored starting at location x4000 and MASK is used to force the program to branch somewhere? .ORIG x3000 LD R0, NUMS LD R2, MASK LOOP LDR R1, R0, #0 BRz DONE AND R5, R1, R2 BRz LP1 BRnzp NEXT LP1 ADD R1, R1, R1 STR R1, R0, #0 NEXT ADD R0, R0, #1 BRnzp LOOP DONE HALT

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
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What does the following program do, assuming a set of integers are stored starting at location x4000 and MASK is
used to force the program to branch somewhere?
.ORIG x3000
LD R0, NUMS
LD R2, MASK
LOOP LDR R1, R0, #0
BRz DONE
AND R5, R1, R2
BRz LP1
BRnzp NEXT
LP1 ADD R1, R1, R1
STR R1, R0, #0
NEXT ADD R0, R0, #1
BRnzp LOOP
DONE HALT
NUMS .FILL x4000
MASK .FILL x8000
.END
a. add only positive integers.
b. add only negative integers.
c. doubles only the positive integers.
d. doubles only the negative integers.
e. None of the above.

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