22 lines
615 B
NASM
Executable File
22 lines
615 B
NASM
Executable File
DATA SEGMENT
|
|
|
|
DATA ENDS
|
|
|
|
CODE SEGMENT
|
|
ASSUME CS:CODE, DS:DATA
|
|
|
|
START:
|
|
MOV AX, DATA
|
|
MOV DS, AX
|
|
|
|
MOV DX, 283H ; 命令口
|
|
MOV AL, 00110100B ; 00(0号计数器)|11(读写2字节)|010(2方式工作)|0(计数值为2进制)
|
|
OUT DX, AL
|
|
MOV DX, 280H ; 0号计数器
|
|
MOV AL, 11101000B ; (1000)_D的2进制的低8位
|
|
OUT DX, AL
|
|
MOV AL, 00000011B ; (1000)_D的2进制的高8位
|
|
OUT DX, AL
|
|
|
|
CODE ENDS
|
|
END START |