串行口移动输出控制实验代码汇编

以下是一个串口移动输出控制实验的汇编代码，供参考：

ORG 0x100
MOV AL, 0x80
OUT 0x61, AL
MOV AL, 0x02
OUT 0x43, AL
MOV AX, 0x004C
OUT 0x42, AL
MOV AL, AH
OUT 0x42, AL
MOV CX, 0x0FFFF
MOV DX, 0x3F8
MOV AL, 'H'
MOV AH, 0x01
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L1:
IN AL, DX
AND AL, 0x20
JZ L1
MOV AL, 'H'
OUT DX, AL
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L2:
IN AL, DX
AND AL, 0x20
JZ L2
MOV AL, 'E'
OUT DX, AL
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L3:
IN AL, DX
AND AL, 0x20
JZ L3
MOV AL, 'L'
OUT DX, AL
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L4:
IN AL, DX
AND AL, 0x20
JZ L4
MOV AL, 'L'
OUT DX, AL
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L5:
IN AL, DX
AND AL, 0x20
JZ L5
MOV AL, 'O'
OUT DX, AL
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L6:
IN AL, DX
AND AL, 0x20
JZ L6
MOV AL, ' '
OUT DX, AL
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L7:
IN AL, DX
AND AL, 0x20
JZ L7
MOV AL, 'W'
OUT DX, AL
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L8:
IN AL, DX
AND AL, 0x20
JZ L8
MOV AL, 'O'
OUT DX, AL
MOV BX, 0x0007
MOV DX, 0x3F8
MOV CX, 0x0FFFF

L9:
IN AL, DX
AND AL, 0x20
JZ L9
MOV AL, 'R'
OUT DX, AL
HLT

该代码使用了8255A芯片进行串口输出控制，输出字符串"HELLO WORLD"。其中，使用了延时循环来控制输出速度。