微机原理与接口技术实验指导(12学时)(13)

LODSB

CMP AL,BH JNA X1 MOV BH,AL JMP X2

CMP AL,BL

JNB X2 MOV BL,AL

LOOP CON2

MOV AX,BX POP BX POP CX POP SI

RET

MOV AL,0FFH ;00H

MOV DX,PA OUT DX,AL

MOV CL,0DFH ;MOV BX,OFFSET BUF

MOV AL,[BX]

MOV AH,00H PUSH BX

MOV BX,OFFSET DATA1

显示子程序 ,5ms