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I have one small doubt.
Presently i am writing a driver for a data aquisition card
on LINUX ker ver 2.0.31. Are the physical interrupt lines directly
mapped to irq numbers(cat /proc/interrupts).
1> If so how are they mapped?.
2> If more than one device can share a irq line , how is it
3> Whether the kernel takes care of more than one device if the irq line is
shared or whether the driver writer has to take care about that.