模拟器在运行以下代码时停止

Question

org 100h
.code

MOV SI, 500
MOV CL, [SI]
MOV CH, 00
INC SI
MOV AL, [SI]
INC SI
MOV DI, 600
MOV [DI], AL
INC DI
DEC CL
MOV BL, [SI]
L1: ADD AL, BL
MOV [DI], AL
INC DI
LOOP L1
HLT

ret