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Merlin DP PCI Motherboard User’s Guide
PCI/PnP Setup
Choose the PCI/PnP Setup icon from the WINBIOS Setup screen to display the
PCI and Plug and Play Setup options, described below.
PCI VGA Palette Snoop
When this option is set to Enabled, multiple VGA devices operating on
different buses can handle data from the CPU on each set of palette registers
on every video device. Bit 5 of the command register in the PCI device
configuration space is the VGA Palette Snoop bit (0 is disabled). For example: if
there are two VGA devices in the computer (one PCI and one ISA) and:
VGA Palette
Snoop Bit Setting
Action
Disabled Data read and written by the CPU is only directed to the PCI VGA
device's palette registers.
Enabled Data read and written by the CPU is directed to the both the PCI
VGA device's palette registers and the ISA VGA device palette
registers, permitting the palette registers of both devices to be
identical.
This option must be set to Enabled if any ISA adapter card installed in the
system requires VGA palette snooping. The Optimal and Fail – Safe default
settings are Disabled.
PCI Slot-1 Latency Timer
PCI Slot-2 Latency Timer
PCI Slot-3 Latency Timer
PCI Slot-4 Latency Timer
These options specify the latency timings (in PCI clocks) for PCI devices
installed in the four PCI expansion slots. The settings are 32, 64, 96, 128, 160,
192, 224, or 248. The Optimal default setting is 248. The Fail – Safe default
setting is 248.
PCI Slot-1 IRQ Preference
PCI Slot-2 IRQ Preference
PCI Slot-3 IRQ Preference
PCI Slot-4 IRQ Preference
These options specify the IRQ priority for PCI devices installed in the four PCI
expansion slots. The settings are Auto, IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10,
IRQ11, IRQ12, IRQ 14, or IRQ15, in priority order. The Optimal and Fail – Safe
default settings are Auto.
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