Data Translation DT9835, User Manual

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Principles of Operation
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Interrupts
The DT9835 board can generate a PCI-bus interrupt when any of the
digital input lines corresponding to banks 10 and 11 changes state.
This feature is useful when you want to monitor critical signals or
when you want to signal the host computer to transfer data to or from
the module. You enable the interrupts on a bit-by-bit basis using the
Open Layers Control Panel. Refer to the DT9835 Getting Started
Manual for more information.
Use software to determine which digital input line changed state.