📄 csdn技术中心 实战deviceiocontrol 之六：访问物理端口.mht
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<TD><B> <SPAN=20
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<TD width=3D500> <SPAN=20
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id=3DArticleTitle1_ArticleTitle1_lblKeywords>DeviceIoControl,=CE=EF=C0=ED=
=B6=CB=BF=DA,=C9=E8=B1=B8=C7=FD=B6=AF=B3=CC=D0=F2,IOPM,CMOS,speaker</SPAN=
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<P class=3Dbhw98><STRONG class=3Dbhw98>Q</STRONG>=20
=
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<P class=3Dbhw98><STRONG class=3Dbhw98>Q</STRONG>=20
=
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<P class=3Dbhw98><STRONG class=3Dbhw98>Q</STRONG>=20
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<P class=3Dbhw98><STRONG class=3Dbhw98>A</STRONG> =
=BF=B4=CB=C6=D0=A1=D0=A1=CE=CA=CC=E2=A3=AC=C4=D1=B5=B9=B6=E0=C9=D9=BA=C3=BA=
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<P=20
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class=3Dbhw98>NT/2000/XP=B4=D3=B0=B2=C8=AB=D0=D4=A1=A2=BF=C9=BF=BF=D0=D4=A1=
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<P=20
=
class=3Dbhw98>=CF=EB=D4=DA=D3=C3=BB=A7=CC=AC=D3=A6=D3=C3=B3=CC=D0=F2=D6=D0=
=CA=B5=CF=D6I/O=B6=C1=D0=B4=A3=AC=D6=B1=BD=D3=B4=E6=C8=A1=D3=B2=BC=FE=A3=AC=
=BF=C9=D2=D4=CD=A8=B9=FD=B1=E0=D0=B4=C7=FD=B6=AF=B3=CC=D0=F2=A3=AC=CA=B5=CF=
=D6CreateFile=A1=A2CloseHandle=A1=A2=20
=
DeviceIOControl=A1=A2ReadFile=A1=A2WriteFile=B5=C8=B9=A6=C4=DC=A1=A3=B4=D3=
Windows=20
=
2000=BF=AA=CA=BC=A3=AC=D2=FD=C8=EBWDM=BA=CB=D0=C4=CC=AC=C7=FD=B6=AF=B3=CC=
=D0=F2=B5=C4=B8=C5=C4=EE=A1=A3=20
<P =
class=3Dbhw98>=CF=C2=C3=E6=CA=C7=B1=BE=C8=CB=D0=B4=B5=C4=D2=BB=B8=F6=B7=C7=
=B3=A3=BC=F2=B5=A5=B5=C4=C7=FD=B6=AF=B3=CC=D0=F2=A3=AC=BF=C9=CA=B5=CF=D6=D7=
=D6=BD=DA=D0=CD=B6=CB=BF=DAI/O=A1=A3 <PRE class=3Dbhw98><CODE =
class=3Dbhw98><SPAN class=3Dkey>#include</SPAN> <SPAN =
class=3Dstr><ntddk.h></SPAN>
<SPAN class=3Dkey>#include</SPAN> <SPAN class=3Dstr>"MyPort.h"</SPAN>
=20
<SPAN class=3Drem>// =C9=E8=B1=B8=C0=E0=D0=CD=B6=A8=D2=E5</SPAN>
<SPAN class=3Drem>// =
0-32767=B1=BBMicrosoft=D5=BC=D3=C3=A3=AC=D3=C3=BB=A7=D7=D4=B6=A8=D2=E5=BF=
=C9=D3=C332768-65535</SPAN>
<SPAN class=3Dkey>#define</SPAN> FILE_DEVICE_MYPORT <SPAN =
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