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IMBA-9654 ATX Motherboard
C.3.2 Enable the DIO Output Function
The BIOS interrupt call INT 15H controls the digital I/O. An assembly program to enable
digital I/O output functions is listed below.
MOV
AX, 6F09H
MOV
BL, 09H
INT
15H
Sets the digital port as output
Initiates the INT 15H BIOS call
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