Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 (Tek) 9/28/84 based on 9/17/84; site tekecs.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!vax135!cornell!uw-beaver!tektronix!orca!tekecs!davidbo From: davidbo@tekecs.UUCP (David Boyle) Newsgroups: net.micro.pc Subject: PGC & Pointers in Large Model Message-ID: <5712@tekecs.UUCP> Date: Tue, 24-Sep-85 14:31:12 EDT Article-I.D.: tekecs.5712 Posted: Tue Sep 24 14:31:12 1985 Date-Received: Fri, 27-Sep-85 03:00:52 EDT Distribution: net Organization: Tektronix, Wilsonville OR Lines: 7 We have a PC/AT with the professional graphics controller, and Microsoft 3.0 C compiler. I have been unable to access the PGC memory ports. I have tried all the combinations (char far *, long variables) and compiling with /AL library, but to no avail. Any clues as to why I might not be accessing the correct memory locations (0xc6000 for the output fifo buffer, 0xc6300 for the output write pointer) ? Any help would be greatly appreciated.