ICS Advent ADIO1600 Series Product Manual page 53

outportb(BASEADDRESS + F, 0x76);
outportb(BASEADDRESS + F, 0xb6);
outportb(BASEADDRESS + D,10);
outportb(BASEADDRESS + D,0);
outportb(BASEADDRESS + E,100);
outportb(BASEADDRESS + E,0);
outportb(BASEADDRESS + F,0x30);
outportb(BASEADDRESS + C,0xff);
outportb(BASEADDRESS + C,0xff);
/* counter #1 to square wave mode */
/* counter #2 to square wave mode */
/* write lower byte, counter #1 */
/* write upper byte, counter #1 */
/* write lower byte, counter #2 */
/* write upper byte, counter #2 */
/* counter #0, mode 0 */
/* counter #0 low load byte */
/* counter #0 high load byte */