3-12 CHAPTER 3
PnP BIOS Auto-Config
: This filed is Used to chose about the BIOS to set up the Legacy.
ISA cards (ISA Card which do not have plug and play functions), PCI cards and ISA
Plug and Play cards without conflicting, The default value is Disabled.
Enabled
:
The BIOS will depend upon information provided Plug and Play software
(Configuration Manager and ISA Configuration Utility (ICU)) to ensure
that there are no conflict with Legacy ISA cards.
Note
that run the ICU and provide the information of Legacy ISA cards. The
ICU will update and save that information to the ESCD (Extend System
Configuration Data). When your system is configured with ICU and they
are used, than press the keyboard <CTRL>+<ALT>+<DEL> to performs a
system software reset. Booting the computer and press <DEL> immediately
to enter PCI configuration Setup and set the
PnP BIOS Auto-Config
:
Enabled.
There fileds (1st, 2st, 3st and 4st. Available IRQ: 10,11,9 and 5)
below no display in this PCI Configuration Setup. Option the "SAVE &
EXIT SETUP" bring to reboot the system.
Disabled
:
If Disabled is chose, than the user should not install and use Plug and Play
software (Configuration Manager and ISA Configuration Utility (ICU)).
But the BIOS will depend upon there fileds (1st, 2st, 3st and 4st Available
IRQ:10,11,9 and 5) below selected by the user to prevent conflicts between
legacy ISA cards and Plug and Play cards.
When you have true PCI card(s) plugged into the system, you will not need to change
any thing here in the
SETUP
program. However, if you do not know whether you have
true PCI card or not, please refer to your PCI card user's manual for the details.
When you have a Legacy card (describbed in section 2-5) to be plugged into the system,a
proper setting is extremely important or it may cause the system hang up. The diagram
shown below tells you how the Rotating Priority Mechanism is designed.
PCI
Chipset
INTA
INTD
PCI#1
PCI#2
PCI#3
INTA
INTD
INTD
INTC
INTB
INTC
INTB
INTB
INTA
INTD
INTC
INTC
INTB
INTA
PCI#4
INTA
INTB
INTC
INTD
Figure 3-7 The Combination of PCI INT# lines
