DOSBox 8086汇编语言

Question

怎么将存放在地址3000H:0800H单元开始处的字从端口6543H处送到外设呢

Answer 1

MOV AX,3000H
MOV DS,AX
MOV SI,0800H
MOV AX,[SI]
MOV DX,6543H
OUT DX,AX