CMOS setup
73
!"
PCI IDE IRQ Map to
This allows you to configure your system to the type of IDE disk controller in use. By
default, Setup assumes that your controller is an ISA (Industry Standard Architecture)
device rather than a PCI controller. The more apparent difference is the type of slot
being used.
If you have equipped your system with a PCI controller, changing this allows you to
specify which slot has the controller and which PCI interrupt (A, B,C or D) is associated
with the connected hard drives.
Remember that this setting refers to the hard disk drive itself, rather than individual
partitions. Since each IDE controller supports two separate hard drives, you can select
the INT# for each. Again, you will note that the primary has a lower interrupt than the
secondary as described in “Slot x Using INT#” above.
Selecting “PCI Auto” allows the system to automatically determine how your IDE disk
system is configured.
11.7 Load BIOS defaults
This option allows you to load the troubleshooting default values permanently stored in
the BIOS ROM. These default settings are non-optional and disable all
high-performance features
11.8 Load SETUP defaults
This option allows you to load the default values to your system configuration .These
default settings are optional and enable all high-performance features
CMOS setup
74
11.9 Integrated Peripherals
!"
On-Chip Primary IDE
The chipset contains a PCI IDE interface with support for two IDE channels. Select
Enabled to activate the primary IDE interface. Select Disabled to deactivate this
interface
The choice: Enabled, Disabled.
!"
IDE Primary Master PIO
ThIS IDE PIO (Programmed Input/Output) field lets you set a PIO mode (0-4) for
Primary master IDE device that the onboard IDE interface supports. Modes 0 through 4
provide successively increased performance. In Auto mode, the system automatically
determines the best mode.
The choice: Auto, Mode 0, Mode 1, Mode 2, Mode 3, Mode 4.
!"
IDE Primary Slave PIO
ThIS IDE PIO (Programmed Input/Output) field lets you set a PIO mode (0-4) for
Primary slave IDE device that the onboard IDE interface supports. Modes 0 through 4
provide successively increased performance. In Auto mode, the system automatically
determines the best mode.
The choice: Auto, Mode 0, Mode 1, Mode 2, Mode 3, Mode 4.
!"
IDE Primary Master UDMA
Ultra DMA/33 implementation is possible only if your IDE hard drive supports it and the
operating environment includes a DMA driver (Windows 95 OSR2 or a third-party IDE
bus master driver). If your hard drive and your system software both support Ultra
DMA/33, select Auto to enable BIOS support.
The Choice: Auto, Mode 0, Mode 1, Mode 2.
!"
IDE Primary Master UDMA
Ultra DMA/33 implementation is possible only if your IDE hard drive supports it and the
operating environment includes a DMA driver (Windows 95 OSR2 or a third-party IDE
bus master driver). If your hard drive and your system software both support Ultra
DMA/33, select Auto to enable BIOS support.
The Choice: Auto, Mode 0, Mode 1, Mode 2.
