Contec SPI-Q6700-LLVA, User Manual

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Appendix
//pg DIO as output
//0:input 1:Output
/* Index c0, GPIO3x Output pin control */
outportb(0x2e, 0xc0); /* select offset c0h */
outportb(0x2e+1, 0xff);
delay(10);
//pg DIO default LOW
/* Index c1, GPIO3x Output Data value */
outportb(0x2e, 0xc1); /* select offset c1h */
outportb(0x2e+1, 0x00);
GP3xVal = 0;
delay(10);
gotoxy(1,9);
//printf(“DIO Status: Low \n”);
do{
if (getkey != 27){
while (!kbhit());
getkey = getch();
switch (getkey){
case ‘A’:
case ‘a’:
if (GP3xVal == 0)
{
GP3xVal = 1; //DIO
all high
//pg DIO high
outportb(0x2e,
0xc1); /* select offset c1h */
outportb(0x2e+1,
0xff);
gotoxy(1,8);
printf(“GP3x Status:
High\n”);
}
else
{