4
Section
FUNCTIONAL SUMMARY
Interrupt Control
The SCV64 controls local and VMEbus interrupts. Because the SCV64 allows the dynamic assignment
of local interrupts to specific request levels, a fixed interrupt map is unnecessary. The following table
lists the internal and VMEbus interrupt sources and the levels to which they may be assigned. The SCV64
interrupt input pin for each local interrupt request is also shown.
68 Extensible Single Board Computer/Controller User's Manual
Table 5: Interrupt Request Summary
Interrupt Source
VMEbus IRQ1
VMEbus IRQ2
VMEbus IRQ3
VMEbus IRQ4
VMEbus IRQ5
VMEbus IRQ6
VMEbus IRQ7
Location Monitor
VMEbus Events
Tick & Interval Timer
FAS216 & EPAK [EPIRQ]
EPAK [EPVIR]
68681
Abort Switch
Parity Error & SCSI bus Reset
VMEbus [*ACFAIL]
VMEbus [*SYSFAIL]
Possible Level Assignments
1 (or off) Vectored
2 (or off) Vectored
3 (or off) Vectored
4 (or off) Vectored
5 (or off) Vectored
6 (or off) Vectored
7 (or off) Vectored
1-7 (or off) Auto-Vectored
1-7 (or off) Auto-Vectored
1-7 (or off) Auto-Vectored
1-7 (or off) Auto-Vectored
1-7 (or off) Vectored
1-7 (or off) Vectored
7 (or off) Auto-Vectored
7 (or off) Auto-Vectored
7 (or off) Auto-Vectored
7 (or off) Auto-Vectored
SCV64 Input
VIRQ1
VIRQ2
VIRQ3
VIRQ4
VIRQ5
VIRQ6
VIRQ7
LIRQ0
LIRQ1
LIRQ2
LIRQ3
LIRQ4
LIRQ5
L7I0
L7I1
L7I2
L7I3
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