LSI LSI21002, User Manual

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2-24 Installing the LSI21002
2.3 Setting Interrupts (Exceptional Cases)
Normally, you do not change the default interrupt routing for the
LSI21002, since performance is usually increased by having two
separate interrupts.
However, if your system does not support two separate interrupts,
INTA/INTB/ (see
Figure A.1 ) is provided to change the interrupt routing.
This capability requires enabling the INTA/INTB/ to act as a jumper for
special configuration purposes. This feature is not packaged with the
standard LSI21002, as the default interrupt routing is sufficient for most
systems.
In the exceptional case, where a user would require jumper settings,
Table 2.2 explains these settings:
Contact Technical Support for further information concerning jumper
settings for this board.
Table 2.2 Setting Interrupts
Jumper Setting Condition
Jumper Out (default) SCSI Channel B is routed to
INTB/ on the PCI bus
Jumper In SCSI Channel B is rerouted to
INTA/ on the PCI bus