My code keeps having errors when running in Pennsimm: $.$ORIG x$3000$

START:

; Send newline to console

LEA R$0,$ NEWLINE

PUTS

; Print prompt for first number

LEA R$0,$ PROMPT$\_$FIRST

PUTS

; Read and echo first four$-$digit binary number

READ$\_$FIRST:

AND R$1,$ R$1,$ #$0$ ; Clear R$1$ for input processing

ADD R$2,$ R$2,$ #$4$ ; Set counter for four digits

READ$\_$FIRST$\_$LOOP:

GETC ; Read a character

OUT ; Echo the character

ADD R$3,$ R$0,$ #$0$ ; Convert ASCII to binary

ADD R$1,$ R$1,$ R$3$ ; Accumulate binary number

ADD R$1,$ R$1,$ R$1$ ; Multiply by $2$

ADD R$2,$ R$2,$ #$-1$ ; Decrement digit counter

BRz VALID$\_$INPUT$\_$FIRST ; Check if four digits read

BR READ$\_$FIRST$\_$LOOP ; Continue reading

VALID$\_$INPUT$\_$FIRST:

; Send newline to console

LEA R$0,$ NEWLINE

PUTS

; Print prompt for second number

LEA R$0,$ PROMPT$\_$SECOND

PUTS

; Read and echo second four$-$digit binary number

READ$\_$SECOND:

AND R$4,$ R$4,$ #$0$ ; Clear R$4$ for input processing

ADD R$5,$ R$5,$ #$4$ ; Set counter for four digits

READ$\_$SECOND$\_$LOOP:

GETC ; Read a character

OUT ; Echo the character

ADD R$6,$ R$0,$ #$0$ ; Convert ASCII to binary

ADD R$4,$ R$4,$ R$6$ ; Accumulate binary number

ADD R$4,$ R$4,$ R$4$ ; Multiply by $2$

ADD R$5,$ R$5,$ #$-1$ ; Decrement digit counter

BRz VALID$\_$INPUT$\_$SECOND ; Check if four digits read

BR READ$\_$SECOND$\_$LOOP ; Continue reading

VALID$\_$INPUT$\_$SECOND:

; Perform OR operation

AND R$7,$ R$7,$ #$0$ ; Clear R$7$ for OR operation

ADD R$7,$ R$1,$ R$4$ ; Perform bitwise OR operation

; Convert largest binary number to ASCII

ADD R$2,$ R$7,$ #$0$ ; Copy OR result to R$2$

ADD R$7,$ R$7,$ #$0$ ; Clear R$7$ for ASCII result

ADD R$5,$ R$5,$ #$-4$ ; Set counter for four digits

ASCII$\_$LOOP:

ADD R$6,$ R$2,$ R$5$ ; Extract each digit of the result

AND R$6,$ R$6,$ #$15$ ; Cover lower four bits

ADD R$6,$ R$6,$ #$0$ ; Convert binary to ASCII

ADD R$7,$ R$7,$ R$6$ ; Store ASCII result

ADD R$5,$ R$5,$ #$-4$ ; Decrement counter

BRp ASCII$\_$LOOP ; Continue until all digits output

; Print result

LEA R$0,$ RESULT$\_$LABEL ; Load result label

PUTS ; Output result label

LEA R$0,$ RESULT$\_$LABEL ; Load result

PUTS ; Output result

BR START ; Restart the program

NEWLINE: $.$STRINGZ $"$

$"$ ; Newline character

PROMPT$\_$FIRST: $.$STRINGZ "Enter First Number $(4$ binary digits$)$: $"$ ; Prompt for first number

PROMPT$\_$SECOND: $.$STRINGZ "Enter Second Number $(4$ binary digits$)$: $"$ ; Prompt for second number

RESULT$\_$LABEL: $.$STRINGZ "The OR function of the two numbers is: $"$ ; Result label

$.$END

The last instructions are: The program sends a newline to the console and then prints the following on the console:

The OR function of the two numbers is: zzzz

where zzzz is the four$-$digit binary number. A linefeed $($newline$)$ is printed at the end of the string.

$($Your code will not print in boldface, of course; that$$s just used for emphasis here.$)$

$8.$ The program returns to step $1.$