Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!RICHTER.MIT.EDU!krowitz
From: krowitz@RICHTER.MIT.EDU (David Krowitz)
Newsgroups: comp.sys.apollo
Subject: Re:  Help! busses + DN10000
Message-ID: <8904211413.AA07628@richter.mit.edu>
Date: 21 Apr 89 14:13:19 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 14

Hmm ... if mmap will not allow you to map the device file, then
you are going to have to use Apollo's GPIO (General Purpose I/O)
package to write a device driver. The driver could be as simple
as a subroutine call which returns the virtual address of the
I/O page of the device to your program as a pointer.


 -- David Krowitz

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