NEC MT2200, User Manual

Page: 111 / 192

5-21
Upgrades and Options
Consider the following points when installing option
boards:
■
ISA bus priority is slot J3 - J6, slot J3 having the
highest priority. ISA slot J3 is the bottom option
board slot on the system board. See Figure 5-8 for
ISA slot numbers.
■
PCI bus priority is slot J11 - J9, slot J11 having the
highest priority. PCI slot J11 is the top PCI option
board slot on the system board. See Figure 5-8 for
PCI slot numbers.
■
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 J3 - J6, starting
with slot J3.
Second - BIOS scans for any Plug-and-Play PCI
option board installed in slots J11 - J9, starting
with slot J11.
Always install option boards in the first available
slot in the scan sequence. As an example, if there
are ISA option boards installed in slots J3 and J4 of
your system and slots J5 and J6 are vacant, install
your Plug-and-Play option board into slot J5.
Controller/Adapter Hardware Configurations
Table 5-1 lists the option boards you may add to your
system and provides information on slot location,
memory and I/O addressing and assigned interrupt
request number (IRQ).