Date: Sat, 23 Dec 1995 21:04:42 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: hackers@freebsd.org Subject: How to write in physical memory ? Message-ID: <199512232004.VAA10304@labinfo.iet.unipi.it>
next in thread | raw e-mail | index | archive | help
Hi, what is the simplest way for a user process to access a portion of the physical memory on a system ? More specifically, I would like to peek/poke into the video memory of my S3 card. XF86_S3 says 'Local bus LAW is 0xF3000000' , I assume this is the physical address of the frame buffer (my ultimate goal would be to have the meteor driver dump directly into video memory through the PCI bus). Thanks Luigi ==================================================================== Luigi Rizzo Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it Universita' di Pisa tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 http://www.iet.unipi.it/~luigi/ ====================================================================
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199512232004.VAA10304>