Leadtek WinFast 6000ABX User Manual page 31

Leadtek Research Inc.
AT Bus Clock
You can set speed of the AT bus in terms of a fraction of the CPU clock speed or at the fixed
speed of 7.16 MHz.
The Choice: 7.16 MHz, PCICLK2/2, PCICLK2/3, PCICLK2/4, PCICLK2/5, and PCICLK2/6
ECC/EC Option
You could select the option of ECC (error-correcting code) / EC (error-checking) for
memory.
The Choice: No ECC/EC, ECC ON, EC ON.
Local In-Order-Queue Depth
You could select the depth of the Internal IOQ (In-Order-Queue) buffer.
The Choice: 1, 2, 4, 8.
Passive_Release_Feature
When Enabled, CPU to PCI bus accesses are allowed during passive release. Otherwise, the
arbiter only accepts another PCI master access to local DRAM.
DRAM Data Integrity Mode
Select Parity or ECC (error-correcting code), according to the type of installed DRAM.
ISA Line Buffer
The PCI to ISA Bridge has an 8-byte bidirectional line buffer for ISA or DMA bus master
memory reads from or writes to the PCI bus. When Enabled, an ISA or DMA bus master can
prefetch two doublewords to the line buffer for a read cycle.
I/O Recovery Period
The peripheral controller insert a minimum of 2 bus clock (BCLK) delays between back-to-back
8- or 16-bit ISA I/O cycles issued from the PCI master. If a greater delay is desired, select 4, 8,
12 clocks.
System BIOS Cacheable
Selecting Enabled allows caching of the system BIOS ROM at F0000h-FFFFFh, resulting in
better system performance. However, if any program writes to this memory area, a system error
may result.
The choice: Enabled, Disabled.
VGA Frame Buffer
When Enabled, you can select 1MB, 2MB, 4MB, 6MB, 8MB or 16MB memory gap size for
USWC (Uncachable, Speculative Write Combine) mode.
Video BIOS Cacheable
Selecting Enabled allows caching of the video BIOS ROM at C0000h-C7FFFh, resulting in
better video performance. However, if any program writes to this memory area, a system error
may result.
The choice: Enabled, Disabled.
Video RAM Cacheable
Selecting Enabled allows caching of the video memory (RAM) at A0000h to AFFFFh, resulting
in better video performance. However, if any program writes to this memory area, a memory
access error may result. The choice: Enabled, Disabled.
AGP 2x Mode support
Select Enabled to support AGP 2.x
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