please help my fix my code:

$.$ORIG x$3000$

; Output intro prompt

OutputPrompt:

LD R$0,$ introPromptPtr

PUTS

; Set up flags, counters, accumulators as needed

AND R$4,$ R$4,$ #$0$

AND R$7,$ R$7,$ #$0$

AND R$2,$ R$2,$ #$0$

LD R$5,$ counter

; Get first character, test for $\text{'}$

$\text{'},\text{'}+\text{'},\text{'}-\text{'},$ digit$/$non$-$digit

GetFirstChar:

GETC

OUT

; Is the very first character $=\text{'}$

$\text{'}?$ If so$,$ just quit $($no message$)!$

LD R$2,$ newlineCheck

ADD R$2,$ R$2,$ R$0$

BRz QuitProg

; Is it $=\text{'}+\text{'}?$ If so$,$ ignore it$,$ go get digits

LD R$2,$ plusCheck

ADD R$2,$ R$2,$ R$0$

BRz GetDigits

; Is it $=\text{'}-\text{'}?$ If so$,$ set neg flag, go get digits

LD R$2,$ minusCheck

ADD R$2,$ R$2,$ R$0$

BRz SetNegFlag

; Invalid initial character $-$ output error message, start over

BR OutputErrorMessage

SetNegFlag:

ADD R$7,$ R$7,$ #$-1$

BRz GetDigits

BR GetFirstChar ; Jump back to the beginning

GetDigits:

GETC

OUT

; IF NEWLINE, END PROG

LD R$2,$ newlineCheck

ADD R$2,$ R$2,$ R$0$

BRz QuitProg

; Is it If so$,$ it is not a digit $-$ output error message, start over

LD R$2,$ zeroCheck

ADD R$2,$ R$2,$ R$0$

BRn OutputErrorMessage

; Is it $>\text{'}9\text{'}?$ If so$,$ it is not a digit $-$ output error message, start over

LD R$2,$ nineCheck

ADD R$2,$ R$2,$ R$0$

BRp OutputErrorMessage

; If none of the above, the character is a numeric digit $-$ convert it to number & store in target register!

LD R$2,$ zeroCheck ; ASCII TO DECIMAL

NOT R$2,$ R$2$

ADD R$2,$ R$2,$ #$1$

ADD R$0,$ R$0,$ R$2$

LD R$3,$ multiplyFactor

ADD R$4,$ R$4,$ R$0$ ; Add the current digit to the accumulated result

ADD R$4,$ R$4,$ R$4$ ; Multiply the accumulated result by $2$

ADD R$4,$ R$4,$ R$4$ ; Multiply the accumulated result by $4$

ADD R$4,$ R$4,$ R$4$ ; Multiply the accumulated result by $8$

ADD R$4,$ R$4,$ R$0$ ; Add the current digit

ADD R$5,$ R$5,$ #$-1$

BRz QuitProg

BRnp GetDigits

OutputErrorMessage:

LD R$0,$ errorMessagePtr

PUTS

BR GetFirstChar ; Jump back to the beginning

QuitProg:

; IF FLAG IS SET TO NEGATIVE, CONVERT TO NEGATIVE

BRn SetNegative

; OUTPUT NEWLINE

LD R$0,$ newlineCheck

OUT

HALT

SetNegative:

NOT R$4,$ R$4$

ADD R$4,$ R$4,$ #$1$

BR QuitProg

; Program Data

introPromptPtr $.$FILL xB$000$

errorMessagePtr $.$FILL xB$200$

; DATA

counter $.$FILL #$5$

newlineCheck $.$FILL #$-10$

plusCheck $.$FILL #$-43$

minusCheck $.$FILL #$-45$

zeroCheck $.$FILL #$-48$

nineCheck $.$FILL #$-57$

multiplyFactor $.$FILL #$10$

$.$END

; Remote data

$.$ORIG xB$000$ ; intro prompt

$.$STRINGZ "Input a positive or negative decimal number $($max $5$ digits$),$ followed by ENTER

$"$

$.$END

$.$ORIG xB$200$ ; error message

$.$STRINGZ "ERROR: invalid input

$"$

$.$END

Expected $/$ Sample output

Output

$$ Prompt

$$ "Input a positive or negative decimal number $($max $5$ digits$),$ followed by ENTER

$"$

$$ Error Message

$$ "ERROR! invalid input

$"$

Example

If the user enters $+7246,$ your program should read the $+,7,2,4,6$ and end up with the value b$0001110001001110($which is the two's complement representation of the number #$7246,$ or x$1$C$4$E$)$ in the specified register.

If the users enters $-14237,$ your program should read the $-,1,4,2,3,7$ and end up with the value #$-14237=$ xC$863=$ b$1100100001100011$ in the specified register.

WARNING: In the following examples, the final result is shown in R$5,$ which may NOT be the one you will use. You will store your result in the register specified in the header in your starter code!!

Make sure you get this right, or the grader will not work, and you will get $0/10!$