Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!rutgers!mephisto!bbn.com!adoyle
From: adoyle@bbn.com (Allan Doyle)
Newsgroups: comp.unix.wizards
Subject: Shared Memory Question
Message-ID: <55880@bbn.BBN.COM>
Date: 8 May 90 14:05:41 GMT
Sender: news@bbn.com
Reply-To: adoyle@BBN.COM (Allan Doyle)
Organization: Bolt Beranek and Newman Inc., Cambridge MA
Lines: 19

We have a new Motorola Delta 8864 system with dual 88k CPU running
System V Release 3.2. We are trying to plug a Tadpole 1600x1200 color
graphics card into it. The problem we are having is with a sequence
of calls to shmget() and shmat(). Rather than delve into the many
ways I have tried it that have failed, does anyone out there have
a working code fragment they can send me that will:

	Grab a 20 Mbyte hunk of shared memory at a given physical
	memory location (the frame buffer and control registers)

	Attach to that shared memory and use it from user space.

Thanks in advance.



Allan Doyle                                              adoyle@bbn.com
BBN Systems and Technologies Corporation		 (617) 873-3398
70 Fawcett Street,   Cambridge, MA 02138