Synopsis

[.S.], APTR

Function

Caller's private data to be supplied to IRQ handler function.

See also

aoHidd_Bus_IRQData

Synopsis

[.S.], APTR

Function

Specifies IRQ handler function to be called when bus interrupt arrives.
The function should be called using "C" calling convention and has the
following prototype:

    void bus_HandleIRQ(UBYTE status, APTR userdata);

Your driver should pass the following arguments to this function:
    status   - value read from bus status register.
    userdata - value of aoHidd_Bus_IRQData attribute.

Notes

Reading the status register is part of the interrupt acknowledge
process, and therefore has to be done by the driver.

It is driver's job to check whether the interrupt really belongs to
the bus.

See also

aoHidd_Bus_IRQData

Synopsis

[I..], BOOL

Function

If this attribute is set to FALSE during object creation, the object
will be destroyed if no devices are detected on the bus.

Notes

This can be useful for optional buses like legacy ISA controllers,
which have no other way to detect their presence.