Chapter 4 Award BIOS Setup
Page: 4-16 PSB-1688LF USER
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S MANUAL
Descriptions on each item are as follows:
1. CPU to PCI Write Buffer
When this field is Enabled, writes from the CPU to the PCI bus are
buffered, to compensate for the speed differences between the CPU and
the PCI bus. When Disabled, the writes are not buffered and the CPU
must wait until the write is complete before starting another write cycle.
2. PCI Master 0 WS Write
When Enabled, writes to the PCI bus are executed with zero wait states.
3. PCI Delay Transaction
The chipset has an embedded 32-bit posted write buffer to support
delay transactions cycles. Select Enabled to support compliance with
PCI specification version 2.1.
MEMORY HOLE:
In order to improve performance, certain space in memory is reserved for ISA
cards. This memory must be mapped into the memory space below 16MB.
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.
VIDEO RAM CACHEABLE:
Selecting Enabled allows caching of the video BIOS ROM at C0000h to
C7FFFh, resulting in better video performance. However, if any program
writes to this memory area, a system error may result.
IO CHANNEL CHECK NMI:
This field allows you to enable or disable IO channel check NMI. Before
selecting this function, the user should check first that NMI function is
enabled as described in chapter 2 (Reset/NMI/Clear Watchdog Selection).