INDUSTRIAL I/O PACK SERIES
AVME9675A
VME64x bus 6U CARRIER BOARD
Acromag, Inc. Tel: 248-295-0310
- 36 -
http://www.acromag.com
- 36 -
https://www.acromag.com
asserts Ack* to the carrier board. The carrier board passes this along to
the VME64x bus (D08 [O] or D16) and asserts DTACK*.
6. The host uses the vector to point at which interrupt handler to execute
and begins its execution.
7. Example of Generic Interrupt Handler Actions:
A. Disable the interrupting IP by writing a "0" to the appropriate bit in the
IP Interrupt Enable Register.
B. Take any IP specific action required to remove the interrupt request at
its source.
C. Clear the interrupting IP by writing a "1" to the appropriate bit in the IP
Interrupt Clear Register.
D. Enable the interrupting IP by writing a "1" to the appropriate bit in the IP
Interrupt Enable Register.
8. If the IP interrupt stimulus has been removed and no other IP modules
have interrupts pending, the interrupt cycle is completed (i.e. the carrier
board negates its interrupt request).
A. If the IP interrupt stimulus remains, a new interrupt request will
immediately follow. If the stimulus cannot be removed, then the IP
should be disabled or reconfigured.
B. If other IP modules have interrupts pending, then the interrupt request
(IRQx*) will remain asserted. This will start a new interrupt cycle.