Path: utzoo!utgpu!watserv1!watmath!att!att!bu.edu!rpi!zaphod.mps.ohio-state.edu!usc!samsung!munnari.oz.au!comp.vuw.ac.nz!lloyd From: L.Parkes@comp.vuw.ac.nz (Lloyd Parkes) Newsgroups: comp.os.minix Subject: Re: Screen blankers Message-ID: Date: 5 Nov 90 00:31:20 GMT References: <12681@chaph.usc.edu> <72802@sgi.sgi.com> <73038@sgi.sgi.com> <27857@usc> Sender: news@comp.vuw.ac.nz (News Admin) Organization: Dept. of Computer Science, Victoria Uni. of Wellington, NZ. Lines: 30 Nntp-Posting-Host: circa.comp.vuw.ac.nz In-Reply-To: kjh@pollux.usc.edu's message of 3 Nov 90 02:08:41 GMT In article <27857@usc> kjh@pollux.usc.edu (Kenneth J. Hendrickson) writes: I have a couple of "good" books on the subject, that only show how to do this using the BIOS. Of course, the BIOS can't be used in protected mode. The hardware must be programmed directly. Neither the Norton "Guide to IBM PC and PS/2" nor the Wilton "Programmer's Guide to PC & PS/2 Video Systems" book show how to program the hardware directly. :-( (They do show how to program CGA and MGA hardware directly.) Surely Wilton's book contains code to map out video memory. Near the back, (I need an office here at University, so that I can keep all my book etc. near the machines with the news feed, but I am an undergraduate :-) there is some discussion on bit planes, and how to map them in and out. Surely you can just map the all out. Near the front, there is a discussion on the hardware in various boards, and I know that when I played around with the memory mapping stuff discussed there, I managed to blank the screen. Sorry this is all a bit vague, but my manuals are at home. Lloyd p.s. If anyone has any more information about programming the attribute controller that Wilton's rather terse stuff, please let me know. -- ------------------------------------------------------------------------ Lloyd Parkes | The stereotypical young adult male in New lloyd@comp.vuw.ac.nz | Zealand is a good reason for being lesbian. ------------------------------------------------------------------------