矩形面积

Question

我需要让用户输入值并找出矩形的区域并输出。我有一个程序会在其中询问用户输入，但是在输出时会输出完全错误的答案

该程序以LC-3汇编语言编写。我尝试了多种尝试输出值的不同技术，但是所有方法都具有相似的结果。它将在右侧附近输出数字no或随机符号。

.ORIG x3000

; Reset Registers
AND R0, R0, #0
AND R1, R1, #0
AND R2, R2, #0
AND R3, R3, #0
AND R4, R4, #0
AND R5, R5, #0
AND R6, R6, #0
AND R7, R7, #0

LEA R0, numberone
PUTS
GETC
OUT
LD R3, HEXN30 
ADD R0, R0, R3
ADD R1, R0, #0


LEA R0, numbertwo
PUTS
GETC
OUT
ADD R0, R0, R3
ADD R6, R0, #0
LOOP
      ADD R2, R2, R1
      ADD R6, R6, #-1
BRp LOOP

LEA R0, MESG 
PUTS
ADD R0, R2, x0

LD R2, NEG_TEN  
ADD R2, R2, R0  
BRn JUMP    
AND R4, R4, #0  
ADD R4, R4, R2  
LD R0, ASCII_1 
OUT    
AND R0, R0, #0  
ADD R0, R0, R4  

JUMP

LD R3, HEX30 ;add 30 to integer to get integer character
ADD R0, R0, R3
OUT 

HALT ;{TRAP 25}


numberone  .stringz "\nPlease enter the length: "
numbertwo  .stringz "\nPlease enter the width: "
MESG .STRINGZ  "\n\nThe Area of the Rectangle is: "
HEXN30 .FILL xFFD0 ; -30 HEX
HEX30 .FILL x0030 ; 30 HEX
NEG_TEN .FILL #-10
ASCII_1 .FILL x0031 ; ASCII char '1'
.END

The console should output the follow:

Please enter a length: 4 
Please enter a width: 5
The Area of the rectangle is: 20