Msi 945GC Networks Manual de usuario descargar pdf (Pagina 24)

2-8

MS-96C4 Server Board

Sample code to access IO Port 5Eh

Set Bit 0 and 1 to High

mov dx, 5Eh

in al, dx Read 5Eh's value to al

and al, 0fch Clear Bit 0 and 1

or al, 03h Set Bit 0 and 1 to high

out dx, al Write to 5Eh

Set Bit 0 and 1 to Low

mov dx, 5Eh

in al, dx Read 5Eh's value to al

and al, 0fch Clear Bit 0 and 1

out dx, al Write to 5Eh

Set Bit 2 and 3 to High

mov dx, 5Eh

in al, dx Read 5Eh's value to al

and al, 0f3h Clear Bit 2 and 3

or al, 0ch Set Bit 2 and 3 to high

out dx, al Write to 5Eh

Set Bit 2 and 3 to Low

mov dx, 5Eh

in al, dx Read 5Eh's value to al

and al, 0f3h Clear Bit 2 and 3

out dx, al Write to 5Eh

IO Port 5Eh High Low

Bit 0/1 POWER ON LAN 1-2 Bypass POWER ON LAN 1-2 Pass Through

Bit 2/3 POWER OFF LAN 1-2 Bypass POWER OFF LAN 1-2 Pass Through

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Msi 945GC Networks Manual de usuario Pagina 24