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Chapter 4, Status Reporting
Setting up an SRQ Interrupt
8. Service the interrupt.
To re-enable the SRQ interrupt after branching to the line in your code that
services the interrupt:
1. Clear the Status Byte Register. Example:
NOTE:
The SPOLL command queries the Status Byte Register. Bit 6 is the RQS bit, and should be
set indicating that the Test Set requested service.
2. Query the Event Register. Example:
3. Clear other Event Registers in the path to the Status Byte Register Group. Examples:
4. Re-enable the SRQ Interrupt.
5. Branch to return line. Example:
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Status Byte = SPOLL (714).
"STAT:CDMA:EVEN?"
Since our example set up an interrupt only on the CDMA Status Register Bit 3, Bit 3
should be true when you read the Event Register. This command also clears the con-
tents of the CDMA Event Register.
"STAT:OPER:EVEN?"
reads the Operation Status Register Group Event Register, clearing its contents so that
another interrupt won't be generated until the SMB from the CDMA Status Register
Group is true.
"*CLS"
clears all the event register contents. (Using this command will work for this example,
but would not be a good choice if multiple events were generating SRQ interrupts,
because bits that flag other events would be cleared).
"ENABLE INTR"
GOTO XXX
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