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Question 4) Our assembler has crashed and we need your help! Create a symbol table for the program shown below, and assemble the instructions at labels A, B and D. .ORIG x3000 AND R0, R0, #0 A LD R1, E AND R2, R1, #1 BRp C B ADD R1, R1, #-1 C ADD R0, R0, R1 ADD R1, R1, #-2 D BRp C ST R0, F TRAP x25 E .BLKW 1 F .BLKW 1 .END You may assume another module deposits a positive value into E before the module executes. In fifteen words or fewer, what does the above program do?

          Question 4) Our assembler has crashed and we need your help! Create a symbol table for the
program shown below, and assemble the instructions at labels A, B and D.
.ORIG x3000
AND R0, R0, #0
A LD R1, E
AND R2, R1, #1
BRp C
B ADD R1, R1, #-1
C ADD R0, R0, R1
ADD R1, R1, #-2
D BRp C
ST R0, F
TRAP x25
E .BLKW 1
F .BLKW 1
.END
You may assume another module deposits a positive value into E before the module executes.
In fifteen words or fewer, what does the above program do?

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Question 4) Our assembler has crashed and we need your help! Create a symbol table for the
program shown below, and assemble the instructions at labels A, B and D.
.ORIG x3000
AND R0, R0, #0
A LD R1, E
AND R2, R1, #1
BRp C
B ADD R1, R1, #-1
C ADD R0, R0, R1
ADD R1, R1, #-2
D BRp C
ST R0, F
TRAP x25
E .BLKW 1
F .BLKW 1
.END
You may assume another module deposits a positive value into E before the module executes.
In fifteen words or fewer, what does the above program do?

Added by Zachary C.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Gokul R Nair

Step 1

Step 1: Create a symbol table for the program by identifying all labels and their corresponding memory locations | Symbol | Location | |--------|----------| | A | x3003 | | B | x3006 | | C | x3007 | | D | x3009 | | E | x300C Show more…

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Question 4) Our assembler has crashed and we need your help! Create a symbol table for the program shown below, and assemble the instructions at labels A, B, and D. ORIG AND LD AND BRp ADD ADD ADD BRp ST TRAP BLKW BLKW END X3000 RO RO, #0 R1 R2 R1, #1 R1, R1, #-1 RO, RO, R1 R1 R1 #-2 RO, x25 You may assume another module deposits a positive value into E before the module executes. In fifteen words or fewer, what does the above program do?

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