2.4 Setting Interrupts (Exceptional Cases)
Normally, you do not change the default interrupt routing for the LSI21003, since performance is usually increased by having two separate interrupts.
However, if your system does not support two separate interrupts, the INTA/INTB/ jumper 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 LSI21003, as the default interrupt routing is sufficient for most systems.
In the exceptional case, where a user would require jumper settings, Table 2.2, “Setting Interrupts,”explains these settings:
Table 2.2 Setting InterruptsJumper Setting | Condition | ||
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Jumper Out (default) | SCSI Channel B is routed to | ||
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| INTB/ on the PCI bus. |
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Jumper In | SCSI Channel B is rerouted to | ||
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| INTA/ on the PCI bus. |
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Contact Technical Support for further information concerning jumper settings for this board.
Installing the LSI21003 |