Path: utzoo!utgpu!cunews!bnrgate!brtph3!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request From: trimble@laic.rdd.lmsc.lockheed.com (Gary Trimble) Newsgroups: comp.sys.sun Subject: Physical Address Read/Write Keywords: Miscellaneous Message-ID: <2154@brchh104.bnr.ca> Date: 24 Mar 91 12:32:00 GMT Sender: news@brchh104.bnr.ca Organization: Sun-Spots Lines: 5 Approved: Sun-Spots@rice.edu X-Original-Date: 22 Mar 91 03:55:47 GMT X-Sun-Spots-Digest: Volume 10, Issue 65, message 7 X-Note: Submissions: sun-spots@rice.edu, Admin: sun-spots-request@rice.edu I am trying to address a physical address on a peripheral card (a register actually) using a Sun (3E) running 4.0.3. The naive question is; Do I use mmap to map the physical address space or is there a simpler way? Any help would be appreciated (including a code example). Please respond via email. Thanks