南邮 微型计算机原理与接口技术 汇编语言 实验四

;FILENAME:931_1.ASM

DATA      SEGMENT

TEXT      DB    'THE QUICK BROWN FOX JUMPS OVER LAZY DOG'

          DB      0DH,0AH

LLL       EQU     $-TEXT

ERROR     DB      'COM1 BAD !',0DH,0AH,'$'

DATA      ENDS

CODE      SEGMENT

          ASSUME  CS:CODE,DS:DATA

BEG:      MOV     AX,DATA

          MOV     DS,AX

          CALL    I8250                 ;主串口初始化

          MOV     CH,10                 ;10行送CH