Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!sunriv!ronh
From: ronh@sunriv.UUCP (Ronnie Hughes)
Newsgroups: comp.unix.xenix.sco
Subject: Re: memory mapped video device drivers
Keywords: xenix, video, memory mapped
Message-ID: <25@sunriv.UUCP>
Date: 11 Dec 90 15:54:04 GMT
References: <1990Dec10.193631.4019@sj.ate.slb.com>
Reply-To: ronh@sunriv.UUCP (Ronnie Hughes)
Organization: SunRiver Corporation
Lines: 9

In article <1990Dec10.193631.4019@sj.ate.slb.com> stefano@sj.ate.slb.com (Stefano Concina) writes:
>- how do you map physical memory to user space ? I tried read/writes to 

Try the kernel routine vidumapinit(phys, size), where phys is the
actual physical address of the card and size is in bytes.  This
returns a user virtual address which can be passed back to the 
user process.  Hope this helps.

Ronnie		ronh@sunriver.com  or uunet!sunriv!ronh