我正在制作一个汇编计算器来添加和减去数字，但我的代码挂在一个特定的点上，我真的不明白它为什么挂起。据我所知，它挂在拼凑部分。
所以这是过程（不完全完成，只是尝试执行步骤）：
ADDER PROC
CALL NUM1
XOR CX, CX ;CX resetting
MOV CX, 10 ;set CX to 10
MOV DL, 10 ;multiplier of number(x * 10^n)
moveend:
LODSB ;here i move the index to the end and sub 1 from it to be on the last character
CMP AL, '0'
JNE moveend
SUB SI, 1d
MOV AL, [SI]
MOV BL, AL ;moving al to bl(this will contain the whole number)
puttogether:
DEC SI ;si decreasing
CMP SI, 0
JB veg ;jumps to end, and print if si is before the first character
MOV AL, [SI]
IMUL DL ;multiply with 10^n
ADD BL, AL ;BL contains the number so far
XOR AX, AX ;increasing DL to 10^(n+1)
MOV AL, DL ;
XOR DX, DX ;
IMUL CX ;
MOV DL, AL ;
XOR AX, AX ;
JMP puttogether
veg:
MOV AX, BX
int 21h
RET
ADDER ENDP