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Date:      Wed, 19 Jun 1996 14:06:45 +0000
From:      Michael Saal <msaal@qosnet.com>
To:        questions@freebsd.org
Subject:   ?: allocating physical memory for a driver
Message-ID:  <31C80975.41C67EA6@qosnet.com>

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I am writing a driver for a bus mastering ISA card.

How do I allocate physical memory and make sure that is located below
the 16M boundry addressable by the ISA bus?

Is malloc("memory size", M_DEVBUF, M_NOWAIT) sufficient? If it is I
don't see how you can make sure the memory is in the right range with
out testing the resulting pointer.

Thanks, Mike Saal



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