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now call the poll backend. With this change we implement greater
poll(2) functionality instead of emulating it via the select backend.
Adapted from NetBSD and including some changes from FreeBSD.
Tested by many, deraadt@ OK
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it's very intrusive and makes the code less readable.
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all ports and looping over them.
- support for generic soft interrupts.
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into comattach that does the isa stuff and com_attach_subr that does the
init.
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Tested by various, vetted by mickey & theo.
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a com as a serial console. (idea from NetBSD).
If cn_tab->cn_dev == NODEV, try to find comopen in cdevsw and set cn_dev
to the right device.
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niklas@ ok
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* Copyright.
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Compiles, but completely untested.
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