SETUP BIOS .4
Mode JumperFree
4. BIOS SETUP
PS/2 Mouse Function Control [Auto]
The default setting [Auto] allows the system to detect a PS/2 mouse at startup. If a mouse is detected, the BIOS assigns IRQ12 to the PS/2 mouse. Otherwise, IRQ12 can be used for expansion cards. When you set this field to [Enabled], BIOS always reserves IRQ12, whether or not a PS/2 mouse is detected at startup. Configuration options: [Enabled] [Auto]
USB Legacy Support [Auto]
This motherboard supports Universal Serial Bus (USB) devices. The default of [Auto] allows the system to detect a USB device at startup. If detected, the USB controller is enabled. If not detected, the USB controller is disabled. When you set this field to [Disabled], the USB controller is disabled whether you are using a USB device or not. Configuration options: [Disabled] [Enabled] [Auto]
OS/2 Onboard Memory > 64M [Disabled]
When using OS/2 operating systems with installed DRAM of greater than 64MB, you need to set this option to [Enabled]. Otherwise, leave to the default setting [Disabled]. Configuration options: [Disabled] [Enabled]
Notes for JumperFree Mode
CPU Upgrade/Reinstallation
To ensure that the system can enter BIOS Setup after changing the processor, the system starts up running at a bus speed of 66MHz and a
System Hangup
If the system crashes or hangs due to improper frequency settings, power OFF the system and restart. The system starts up in safe mode running at a bus speed of 66MHz and enters the BIOS Setup.
58 | ASUS CUA266 User’s Manual |