American Megatrends MAN-759 manual Chipset Setup

Chipset Setup, Continued

PCI VGA USWC/Video Frame Buffer Set this option to Enabled to enable the USWC memory attribute and improve video performance when a PCI video adapter is installed. However, VGA card drivers may not behave correctly when this option is set to Enabled. This option is only available if the PCI VGA card supports pre-fetchable video frame buffers.

The settings are Disabled or Enabled. The Optimal and Fail-Safe defaults are Disabled.

Watchdog Timer This motherboard has an integrated system watchdog timer. The watchdog timer reboots the computer if the computer locks up (if there is no bus activity for 1.2 seconds). Set this option to Enabled when running applications (such as a security system) that require continuous monitoring. The computer then automatically resets after it locks up and the application can continue running with no human intervention required. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Disabled.

ISA 8 Bit I/O Recovery Time This option specifies the length of the delay that is added to the CPU cycle between consecutive 8-bit I/O operations. The length of the delay is related to the CPU type and frequency. The settings are 1 Sysclock, 2 Sysclocks, 3 Sysclocks, 4 Sysclocks, 5 Sysclocks, 6 Sysclocks, 7 Sysclocks, 8 Sysclocks, or Disabled. The Optimal and Fail-Safe default settings are Disabled.

Cont’d

Chapter 2 WINBIOS Setup 47