NOVA-7895 Socket 370 Celeron
TM
& Pentium III
®
Multimedia & Dual Ethernet ,IEEE1394, Embedded Board
79
floppy drive and either hit the reset button or the power button.
11. Reboot the system and note that the BIOS version on the initial
boot-up screen has changed to the new BIOS version. Your BIOS
upgrade is now complete.
Recovering Your Old BIOS:
1. Assuming you have made a back-up of the old BIOS on the
floppy during the upgrade procedure noted above, boot the system
with that diskette in the floppy drive. If you have not backed up to a
floppy during the upgrade procedure noted above, you will need to
repeat steps 1 though 3 (above) for the version of the BIOS you
wish to recover to.
2. Complete steps 4, 5, 6B, 9, 10, and 11 (above) substituting the
name of the BIOS you wish to recover for the upgrade BIOS at
step 5.
Install screen :
NOVA-7895 Socket 370 Celeron
TM
& Pentium III
®
Multimedia & Dual Ethernet ,IEEE1394, Embedded Board
80
Appendix E. Digital Input / Output
NOVA-7895 has a 4-bit IN and 4-bit OUT built-in digital I/O connector. An
external power supply to the connector’s pin-9 and pin-10 is needed to
activate the digital I/O circuit. The external power supply’s DC output
should be connected with NOVA-7895’s power supply at either 5V, 12V
or GND to isolate NOVA-7895 main system and the external I/O device.
Should you not be able to find any external power supply to activate the
digital I/O, the 5V or 12V of the system’s power supply can be used.
Under this condition, the digital I/O is not isolated.
•
Digital Input / Output Address
•
Read port 709 : Digital Input
Bit Value
0 – 3
0 – F
•
Write port 708 : Digital Output
Bit Value
4 – 7
0 – F
External Voltage Input : 0V – 20V
( CN11 Pin 10 )
External Power GND Pin
( CN11 PIN 9 )
Digital Input specifications
( If External Voltage is 5V )
Logic 0 Level : +1V Max
Logic 1 Level : +4V Min
( If External Voltage is 12V )
