微机原理与接口技术——汇编语言

Question

汇编语言：参考下列程序把RAM区（数据段）内2000H～2010H单元的内容改为FF。
CODE SEGMENT
ASSUME CS: CODE
START: MOV BX, 2000H
MOV CX,17
MOV AL,00H
NEXT: MOV [BX], AL
INC BX
LOOP NEXT
MOV AH, 4CH
INT 21H
CODE ENDS
END START

Answer 1

CODE SEGMENT
ASSUME CS: CODE
START: MOV BX, 2000H
MOV CX,10H
MOV AL,FFH
NEXT: MOV [BX], AL
INC BX
LOOP NEXT
MOV AH, 4CH
INT 21H
CODE ENDS
END START