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4-24 Upgrading Your System
ISA adapters can be Plug-and-Play. ISA adapters that are not Plug-and-Play must be
manually configured following the instructions supplied with the board. The
configuration is defined to the system by creating the ISA configuration file when
running the RCU. If you are adding a non-Plug-and-Play ISA option board, run the
RCU before installing the board. For details on running the SCU, see Chapter 3,
“Configuring Your System”.
On system power-up and reboot, BIOS initiates a scan sequence looking for Plug-and-
Play option boards installed since the last power up or reboot. The Plug-and-Play scan
sequence is as follows.
First - BIOS scans for any Plug-and-Play ISA option board installed in slots P11
- P12, starting with slot P11.
Second - BIOS scans for any Plug-and-Play PCI option board installed in slots
P2 - P10, starting with slot P2.
Always install option boards in the first available slot in the scan sequence. For
example, if there are PCI option boards installed in slots P2 and P3 of your system and
slots P4 - P10 are vacant, install your Plug-and-Play option board into slot P4.