D.3.2 enable the dio output function – IEI Integration WAFER-945GSE2 v2.00 User Manual
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WAFER-945GSE2 3.5" Motherboard
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INT 15H Initiates the INT 15H BIOS call
D.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
Sets the digital port as output
MOV BL,
09H
INT 15H Initiates the INT 15H BIOS call
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