Chapter 6 BIOS Configuration
AI5TT Pentium Baby AT Motherboard User
’
s Manual
49
On-Chip Primary/Secondary PCI IDE
These fields allow you either to enable or disable the Primary/Secondary
controller. You might choose to disable the controller if you were to add
a higher performance or specialized controller.
USB Keyboard Support
This field allows your system to support a USB keyboard.
Onboard FDD Controller
This option allows you to select the onboard FDD port.
Onboard Serial/Parallel Port
These fields allow you to select the onboard serial and parallel port and
their addresses. The default value for these ports are:
Serial Port 1
3F8/IRQ4
Serial Port 2
2F8/IRQ3
Parallel
Port
378H/IRQ7
UR2 Mode
This field selects an operating mode for the second serial port.
Parallel Port Mode
This field allows you to determine parallel port mode function.
SPP
Normal Printer Port
EPP
Enhanced Parallel Port
ECP
Extended Capabilities Port
