GE BC5005 Configuring Expansion Cards Legacy ISA Only, Reserving IRQs for ISA Cards in the Bios

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Configuring Expansion Cards (Legacy ISA Only)

Caution

For most applications, an interrupt request (IRQ) or address cannot be shared by more than one resource. If more than one resource is set to the same IRQ or address, the application may not respond properly and could cause your machine to lock up. Following these instructions when installing Legacy ISA cards will prevent problems with resource conflicts.

The controllers (Ethernet, IDE) in the slot CPU of the IPC are connected via an internal PCI bus. This ensures that addresses and IRQs are automatically determined by the BIOS. When making changes to the configuration or adding ISA cards:

1.Install the unit without ISA cards, switch on and read off assigned IRQs and addresses.

2.Install additional ISA cards so that IRQs assigned to PCI are not reused (interrupt sharing).

3.Reserve IRQs for ISA in the BIOS

Reserving IRQs for ISA Cards in the BIOS

Legacy ISA cards are the oldest standard and require memory, I/O, and IRQ settings to be manually set on the card using jumpers, DIP switches, or a configuration program. The card and system need to have the same hardware settings.

The GE Fanuc web site http://gefanuc.com/ provides current information on BIOS settings for IRQs.

1. Connect a keyboard, turn on the system power, and press F2 when prompted to enter the BIOS Setup program.

2. Select Advanced, then PCI Configuration, and PCS ISA Resource Exclusion.

3. If the card requires one or more interrupts, go to an IRQ that currently reads "Available" and change it to "Reserved" by pressing +/-. Do not use an IRQ that already reads "Reserved."

4. If the card requires memory space, press the arrow key to return to the PCI Configuration screen. Select PCI ISA UMB Region Exclusion. Go to a memory block that currently reads "Available" and change it to "Reserved" by pressing +/-. Do not use a memory block that already reads "Reserved."

5. Press ESC to exit the configuration screen. In the Exit menu, select Exit Saving Changes and to save and exit Setup. When the screen goes blank, turn off the power.

6. If the card has jumpers or DIP switches, set them so that they match the IRQ and memory addresses set in the BIOS Setup.

7. Set the I/O port settings of the card (if any) so that they fall within the ranges labeled "Available" in the following table.

GFK-2023C Chapter 4 Installing Plug-in Modules 4-3