AXIOMTEK MANO310 Series, User Manual

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MANO310 Mini ITX Motherboard
Digital I/O 55
Appendix B
Digital I/O
B.1 About Digital I/O
The onboard GPIO or digital I/O has 16 bits (DIO1~16). Each bit can be set to function as input
or output by software programming. In default, all pins are pulled high with +5V level
(according to main power). The BIOS default settings for CN12/CN13 are 4 inputs and 4
outputs where all of these pins are set to 1.
B.2 Digital I/O Programming
Change boot mode to legacy mode, enter to DOS environment and execute debug.exe to
enter debug mode. Then do the following steps under debug mode:
For CN12, the I/O space=
a06h .
1.
“
o a06 FF
” set all 8 pins to output high.
2.
“
o a06 00
” set all 8 pins to output low.
3.
“
i a06
” check I/O status. ‘
1
’ represents high status, ‘
0
’ represents low status.
For CN13, the I/O space=
a07h .
1.
“
o a07 FF
” set all 8 pins to output high.
2.
“
o a07 00
” set all 8 pins to output low.
3.
“
i a07
” check I/O status. ‘
1
’ represents high status, ‘
0
’ represents low status.