correct this coding ORIG x 3 0 0 0 LD R 0 , INTRO PROMPT PTR Load address of intro prompt PUTS Display intro prompt LD R 0 , INPUT BUFFER Load address of input buffer GETS Read input from user AND R 1 , R 1 , 0 Clear R 1 for accumulating sum READ LOOP LDR R 2 , R 0 , 0 Load next input character ADD R 0 , R 0 , 1 Increment buffer pointer BRz PROCESS SUM Branch if end of string LD R 3 , DIGIT MASK Load mask to test if character is digit AND R 3 , R 2 , R 3 Test if character is digit BRz READ LOOP Branch if not digit ADD R 2 , R 2 , 4 8 Convert ASCII digit to binary value ADD R 1 , R 1 , R 2 Add digit to sum BR READ LOOP Loop to read next character PROCESS SUM LD R 0 , OUTPUT BUFFER Load address of output buffer LD R 2 , MAX DIGIT VALUE Load max digit value BRnp OUTPUT ERROR Branch if sum is negative ADD R 3 , R 1 , R 2 Add 1 to max digit value BRn OUTPUT ERROR Branch if sum overflows STR R 1 , R 0 , 0 Store sum in output buffer ADD R 0 , R 0 , 1 Increment buffer pointer LEA R 2 , NEWLINE Load address of newline character STR R 2 , R 0 , 0 Store newline in output buffer PUTS Display output buffer HALT End program OUTPUT ERROR LD R 0 , ERROR MESSAGE PTR Load address of error message PUTS Display error message HALT End program INTRO PROMPT PTR FILL PROMPT Address of intro prompt string ERROR MESSAGE PTR FILL ERROR MSG Address of error message string INPUT BUFFER BLKW 1 0 Input buffer with space for 9 digits and null terminator OUTPUT BUFFER BLKW 1 2 Output buffer with space for 1 0 digits, newline, and null terminator DIGIT MASK FILL xFF Mask to test if character is digit MAX DIGIT VALUE FILL 5 0 Maximum digit value ( 9 ) for testing overflow PROMPT STRINGZ Enter a number ERROR MSG STRINGZ Error Input contains non digit characters or sum overflows NEWLINE FILL x 0 A Newline character

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Question: correct this coding: ORIG x 3 0 0 0 LD R 0 , INTRO _ PROMPT _ PTR ; Load address of intro prompt PUTS

correct this coding: ORIG x

3000

LD R

0,

INTRO

_

PROMPT

_

PTR ; Load address of intro prompt

PUTS ; Display intro prompt

LD R

0,

INPUT

_

BUFFER ; Load address of input buffer

GETS ; Read input from user

AND R

1,

1,

0

; Clear R

1

for accumulating sum

READ

_

LOOP

LDR R

2,

0,

0

; Load next input character

ADD R

0,

0,

1

; Increment buffer pointer

BRz PROCESS

_

SUM ; Branch if end of string

LD R

3,

DIGIT

_

MASK ; Load mask to test if character is digit

AND R

3,

2,

3

; Test if character is digit

BRz READ

_

LOOP ; Branch if not digit

ADD R

2,

2,

- 48

; Convert ASCII digit to binary value

ADD R

1,

1,

2

; Add digit to sum

BR READ

_

LOOP ; Loop to read next character

PROCESS

_

SUM

LD R

0,

OUTPUT

_

BUFFER ; Load address of output buffer

LD R

2,

MAX

_

DIGIT

_

VALUE ; Load max digit value

BRnp OUTPUT

_

ERROR ; Branch if sum is negative

ADD R

3,

1,

2

; Add

1

to max digit value

BRn OUTPUT

_

ERROR ; Branch if sum overflows

STR R

1,

0,

0

; Store sum in output buffer

ADD R

0,

0,

1

; Increment buffer pointer

LEA R

2,

NEWLINE ; Load address of newline character

STR R

2,

0,

0

; Store newline in output buffer

PUTS ; Display output buffer

HALT ; End program

OUTPUT

_

ERROR

LD R

0,

ERROR

_

MESSAGE

_

PTR ; Load address of error message

PUTS ; Display error message

HALT ; End program

INTRO

_

PROMPT

_

PTR

.

FILL PROMPT ; Address of intro prompt string

ERROR

_

MESSAGE

_

PTR

.

FILL ERROR

_

MSG ; Address of error message string

INPUT

_

BUFFER

.

BLKW

10

; Input buffer with space for

9

digits and null terminator

OUTPUT

_

BUFFER

.

BLKW

12

; Output buffer with space for

10

digits, newline, and null terminator

DIGIT

_

MASK

.

FILL xFF ; Mask to test if character is digit

MAX

_

DIGIT

_

VALUE

.

FILL #

50

; Maximum digit value

(9)

for testing overflow

PROMPT

.

STRINGZ "Enter a number:

"

ERROR

_

MSG

.

STRINGZ "Error: Input contains non

-

digit characters or sum overflows."

NEWLINE

.

FILL x

0

A ; Newline character

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