User manual

1784-6.5.27 - September 1997
Chapter 2
Configuring the PKTx Hardware
Introduction
The 1784-PKTx card is a PCI bus card, compliant with the PCI Bus
Specification Revision 2.1. This card was developed with Plug and Play
functionality, as defined in Revision 1.0A of the Plug and Play BIOS
Specification. Because of this, PKTx cards do not require the use of switches
or jumpers to configure their specific interrupt request levels (IRQ) and
base memory address values. These configurations are automatically
assigned to the PKTx card by the PCI BIOS when the computer is powered-
up. The configurations are stored in the PCI configuration registers. These
values may be retrieved by application software used to communicate with
the PKTx card. Rockwell Software products that support the PKTx cards
automatically retrieve these values and use them to communicate with the
PKTx card.
Interrupt Request Assignment
The PCI BIOS automatically assigns the PKTx card an IRQ. Because of
this, each time you add or remove cards and restart your computer, the BIOS
may assign a different IRQ to each card. You should check the IRQ
assignment each time you start your system. Most application software will
verify this assignment for you. The appropriate plug and play driver that is
shipped with your application software verifies the IRQ.
The PKTx Utilities diskette contains a program (PKTXD.EXE)
which allows you to view which IRQ was chosen by the system.
Refer to page A-2 for more information.