From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?iso-8859-1?q?alain=20volmat?= Subject: Framebuffer with banked memory Date: Wed, 30 Oct 2002 11:49:22 +0100 (CET) Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <20021030104922.6612.qmail@web14206.mail.yahoo.com> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: Received: from web14206.mail.yahoo.com ([216.136.173.70]) by usw-sf-list1.sourceforge.net with smtp (Exim 3.31-VA-mm2 #1 (Debian)) id 186qPa-0003d0-00 for ; Wed, 30 Oct 2002 02:49:22 -0800 Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="iso-8859-1" To: linux-fbdev-devel@lists.sourceforge.net Hi, I've been searching on the mailing list concerning the case of writing a framebuffer for a video card which DOESN'T have linear video memory. Actually I didn't found any reply to my question. (well this might means that there is no solution to my problem .. but in that case I would like confirmation). As I said the video card I am now writing a framebuffer for, doesn't have linear memory, which means that I can only access a small part of the memory at a time and then set offset registers in order to access another part of the memory. I would like to know if there is such case in current framebuffer drivers ?? If so, what is the common solution to do that ?? In fact the problem remains in the case of mmap (which is the most common ;( of course), since the memory seams to be accessed directly by pointer, there might be no wait to detect if we need to set or not an offset. In case of fb_read fb_write, it is possible to do that before the actual write at the end (even if it is not sooo beautiful ... ). Anyway, it would be very helpful to me if I could get an answer to this question. Thanks by advance. Alain Volmat ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en fran=E7ais ! Yahoo! Mail : http://fr.mail.yahoo.com ------------------------------------------------------- This sf.net email is sponsored by: Influence the future=20 of Java(TM) technology. Join the Java Community=20 Process(SM) (JCP(SM)) program now.=20 http://ads.sourceforge.net/cgi-bin/redirect.pl?sunm0004en