Asus P2-99B P2-99B User Manual - Page 49

Enabled, Disabled, No Swap, Swap AB, 3F8H/IRQ4, 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, 3F8H/IRQ4, 2F8H/

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IV. BIOS SETUP 16-bit I/O Recovery Time (1 BUSCLK) / 8-bit I/O Recovery Time (1 BUSCLK) Timing for 16-bit and 8-bit ISA cards, respectively. Leave on default setting. Graphics Aperture Size (64MB) Memory-mapped, graphics data structures can reside in a Graphics Aperture. Leave on default setting. Video Memory Cache Mode (UC) USWC (uncacheable, speculative write combining) is a new cache technology for the video memory of the processor. It can greatly improve the display speed by caching the display data. You must leave this on the default setting of UC (uncacheable) if your display card cannot support this feature, otherwise your system may not boot. PCI 2.1 Support (Enabled) This function allows you to enable or disable PCI 2.1 features including passive release and delayed transaction. Leave Enabled (default setting) for PCI 2.1 compliancy. Memory Hole At 15M-16M (Disabled) Enabling this feature reserves 15MB to 16MB memory address space to ISA expansion cards that specifically require this setting. This makes the memory from 15MB and up unavailable to the system. Expansion cards can only access memory up to 16MB. The default is Disabled...Onboard FDC Controller (Enabled) When Enabled, this field allows you to connect your floppy disk drives to the onboard floppy disk drive connector instead of a separate controller card. If you want to use a different controller card to connect the floppy disk drives, set this field to Disabled. Onboard FDC Swap A & B (No Swap) This field allows you to reverse the hardware drive letter assignments of your floppy disk drives. Two options are available: No Swap and Swap AB. If you want to switch drive letter assignments through the onboard chipset, set this field to Swap AB. Onboard Serial Port 1 (3F8H/IRQ4) Settings are 3F8H/IRQ4, 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for the onboard serial connector. Onboard Serial Port 2 (2F8H/IRQ3) Settings are 3F8H/IRQ4, 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for the onboard serial connector. IV. BIOS SETUP Chipset Features ASUS P2-99B User's Manual 49

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ASUS P2-99B User’s Manual
49
IV.
BIOS SETUP
IV.
BIOS SETUP
Chipset Features
16-bit I/O Recovery Time (1 BUSCLK) / 8-bit I/O Recovery Time (1 BUSCLK)
Timing for 16-bit and 8-bit ISA cards, respectively. Leave on default setting.
Graphics Aperture Size (64MB)
Memory-mapped, graphics data structures can reside in a Graphics Aperture.
Leave
on default setting.
Video Memory Cache Mode (UC)
USWC
(uncacheable, speculative write combining) is a new cache technology for
the video memory of the processor.
It can greatly improve the display speed by
caching the display data.
You must leave this on the default setting of
UC
(uncacheable) if your display card cannot support this feature, otherwise your sys-
tem may not boot.
PCI 2.1 Support (Enabled)
This function allows you to enable or disable
PCI 2.1 features including passive release
and delayed transaction. Leave
Enabled
(default setting) for PCI 2.1 compliancy.
Memory Hole At 15M–16M (Disabled)
Enabling this feature reserves 15MB to 16MB memory address space to ISA expan-
sion cards that specifically require this setting.
This makes the memory from 15MB
and up unavailable to the system.
Expansion cards can only access memory up to
16MB.
The default is
Disabled
.
....................................................................................................................................
Onboard FDC Controller (Enabled)
When
Enabled
, this field allows you to connect your floppy disk drives to the onboard
floppy disk drive connector instead of a separate controller card.
If you want to use a
different controller card to connect the floppy disk drives, set this field to
Disabled
.
Onboard FDC Swap A & B (No Swap)
This field allows you to reverse the hardware drive letter assignments of your floppy
disk drives. Two options are available:
No Swap
and
Swap AB
.
If you want to switch
drive letter assignments through the onboard chipset, set this field to
Swap AB
.
Onboard Serial Port 1 (3F8H/IRQ4)
Settings are
3F8H/IRQ4
,
2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10,
and
Disabled
for
the onboard serial connector.
Onboard Serial Port 2 (2F8H/IRQ3)
Settings are
3F8H/IRQ4, 2F8H/IRQ3
,
3E8H/IRQ4, 2E8H/IRQ10,
and
Disabled
for
the onboard serial connector.