User`s guide

Installations • 31
OUT DX,AL
MOV DX,3F0H
MOV AL,0E2H ;device 7, CRE2
OUT DX,AL
MOV DX,3F1H
MOV AL,0AH ;Watch Dog Timer Output
OUT DX,AL
MOV DX,3F0H
MOV AL,2AH ;CR2A
OUT DX,AL
MOV DX,3F1H
MOV AL,80H ;bit7=0 -> KBRST, bit7=1 -> GP12
OUT DX,AL
MOV DX,3F0H
MOV AL,07H
OUT DX,AL
MOV DX,3F1H
MOV AL,08H ;select device 8
OUT DX,AL
MOV DX,3F0H
MOV AL,0F3H ;device 8, CRF3
OUT DX,AL
MOV DX,3F1H
MOV AL,06H ;Watch Dog Timer is reset upon a
OUT DX,AL ;Mouse & Keyboard interrupt
MOV DX,3F0H
MOV AL,07H
OUT DX,AL
MOV DX,3F1H
MOV AL,08H
OUT DX,AL
MOV DX,3F0H
MOV AL,0F4H ;CRF4
OUT DX,AL
MOV DX,3F1H
MOV AL,40H ;bit6 =1 -> counter counts in seconds
OUT DX,AL ;bit6 =0 -> counter counts in minutes