(i) Find the errors in the program and make necessary corrections. Do not insert any additional line in the program. (ii) How many bytes does 'TABLE' occupy? (iii) What are the values loaded in the register R2 and R4? (iv) Determine the values of the flags N, Z, C and V. (v) Modify the program such that the numbers in 'TABLE' are represented in 'word' length.

(i) Find the errors in the program and make necessary corrections. Do not insert any additional line in the program. (ii) How many bytes does 'TABLE' occupy? (iii) What are the values loaded in the register R2 and R4? (iv) Determine the values of the flags N, Z, C and V. (v) Modify the program such that the numbers in 'TABLE' are represented in 'word' length.

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter2: Problem Solving Using C++using

Section2.3: Data Types

Problem 4E: (Practice) Show how the name KINGSLEY is stored in a computer that uses the ASCII code by drawing a...

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Concept explainers

Computer Fundamentals

The computer is termed computation. For calculating or computing something the device that has been used is known as the computer. Or we can say that for performing a fast arithmetic operation the device that has been used is a computer. Storing, processing, and retrieving are the main features of a computer. 

Question

(b) Figure 1, shows an ARM assembly program, which finds the most positive and
negative values in a list of 16-bit (half-word) value in data memory (TABLE).
The values are in two's complement representations. By examining the program,
answer the following questions:
(i) Find the errors in the program and make necessary corrections. Do not
insert any additional line in the program.
(ii) How many bytes does 'TABLE' occupy?
(iii) What are the values loaded in the register R2 and R4?
(iv) Determine the values of the flags N, Z, C and V.
(v) Modify the program such that the numbers in 'TABLE' are represented in
'word' length.

LOOP
DONE
TABLE
AREA EXAM CODE READONLY
ENTRY
ADR
MOV
LDRSH
MOV
LDRSH
CMP
MOVGT
CMP
MOVLT
SUB
BLE
B
RO, TABLE
R1,
R2,
R4,
R3,
R2, R3
R2, R3
R4, R3
R4, R3
R1, R1, #1
Figure 1.
#14
[RO], #2
R2
[RO], #2
LOOP
DONE
DCW 7,-9, 2, 10, -22
DCW -1, 77, 88, -95, 33
DCW 120, 45, -88, 77, 1
END

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Step 1: Outline of the given question

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Step 2: (i) Errors and corrections:

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Step 3: Size of 'TABLE':

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Step 4: (iii) Values in registers R2 and R4:

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Step 5: Values of flags N, Z, C, and V after the execution of the program

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Step 6: Modify the program such that the numbers in 'TABLE' are represented in 'word' length.

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