Abit ZM6, User Manual

Page: 57 / 86

BIOS Setup 3-29
User’s Manual
Note
If you specify the IRQ in this item, then you cannot specify the same IRQ to the ISA
bus, otherwise, it will cause a hardware conflict.
You must be familiar with the PCI interrupt distribution mechanism to adjust this setting.
This feature is for the operating system which will record and fix the PCI configuration
status, if you want to change it.
For the relations between the hardware layout of PIRQ (the signals from the PIIX4 chipset),
INT# (means PCI slot IRQ signals) and devices, please refer to the table below:
Signals PCI slot 1
AGP slot PCI slot 2 PCI slot 3 PCI slot 4
PCI slot 5
PIRQ_1 INT A INT D INT C INT B
PIRQ_2 INT B INT A INT D INT C
PIRQ_3 INT C INT B INT A INT D
PIRQ_4 INT D INT C INT B INT A
l
USB used PIRQ_4.
l
Each PCI slot has four INT#s (INT A~INT D), and the AGP slot has two INT# (INTA and
INT B).
Note: 5 PCI Slots
Although the ZX chipset only supports 4 PCI bus master signals, the ZM6 offers users
an additional PCI slot. Why? Because many Add-on cards such as the Voodoo series of
graphics cards, some PCI-VGA and LAN cards don't occupy the bus master signal. So
ABIT provides our customer better expandability by offering an extra PCI slot.
3-7. Load Setup Defaults
Setup defaults are the settings that allow your system to operate at its highest performance.
When you choose this option, the following message is displayed:
“Load Setup Defaults (Y/N)? N”
If you want to use BIOS Setup default values, press “Y”, then <Enter> to complete the
loading of the settings for best performance.
You should first load the best settings, than enter the CPU Soft Menu to set up CPU
parameters, otherwise the BIOS will replace set parameters by default parameters.