Aaeon FSB-H81H Manual page 106

F u l l - s i z e S B C F S B - H 8 1 H
The following is a sample code for DIO8 as input & DIO1 as output high
(GPIO00, GPIO20)
Outportb(0x2E,0x87); //enter configuration
Outportb(0x2E,0x87);
Outportb(0x2E,0x07); //set LDN
Outportb(0x2F,0x06);
Outportb(0x2E,0xF0); //GPIO set 0 register
Outportb(0x2F,xxxxxxx0b); //Set GPIO00 (DIO8) as input mode
Outportb(0x2E,0xD0); //GPIO set 2 register
Outportb(0x2F,xxxxxxx1b); //Set GPIO20 (DIO1) as output mode
Outportb(0x2E,0xD1); //GPIO output data register
Outportb(0x2F,xxxxxxx1b); //DIO1 as High
Outportb(0x2E,0xAA); //exit configuration
D-6
Appendix D DIO