Instruction manual

3-13
BIOS Setup
between the CAS and RAS strobe signals, used when DRAM is written
to, read from or refreshed. Fast speed offers faster performance while
slow speed offers more stable performance. Settings: 3, 2 (clocks).
RAS# Precharge
This item controls the number of cycles for Row Address Strobe
(RAS) to be allowed to precharge. If insufficient time is allowed for
the RAS to accumulate its charge before DRAM refresh, refresh may
be incomplete and DRAM may fail to retain data. This item applies
only when synchronous DRAM is installed in the system. Available
settings: 3, 2 (clocks).
DRAM Frequency
This setting allows you to set the bus frequency for installed DRAM. Settings:
Auto, DDR200, DDR266, DDR333 (only for 845GE/PE).
Delayed Transaction
The chipset has an embedded 32-bit posted write buffer to support delayed
transactions cycles so that transactions to and from the ISA bus are buffered
and PCI bus can perform other transactions while the ISA transaction is
underway. Select Enabled to support compliance with PCI specification ver-
sion 2.1. Setting options: Enabled, Disabled.
Delay Prior to Thermal
When the CPU temperature reaches a factory preset level, a thermal monitor-
ing mechanism will be enabled following the appropriate timing delay specified
in this field. With the thermal monitoring enabled, clock modulation control-
led by the processor’s internal thermal sensor is also activated to keep the
processor within allowable temperature limit. Setting options: 4 Min, 8 Min,
16 Min, 32 Min.
AGP Aperture Size (MB)
This setting controls just how much system RAM can be allocated to AGP for
video purposes. The aperture is a portion of the PCI memory address range
dedicated to graphics memory address space. Host cycles that hit the aperture
range are forwarded to the AGP without any translation. The option allows
the selection of an aperture size of 4, 8, 16, 32, 64, 128, 256.