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From: | "Ben Peddell" <killer DOT lightspeed AT bigpond DOT com> |
Newsgroups: | comp.os.msdos.djgpp |
References: | <10780N882 AT web2news DOT com> <3E20E6CD DOT 470D12B3 AT yahoo DOT com DOT au> <10943N098 AT web2news DOT com> <3e2234ce DOT 1638784 AT news DOT voyager DOT net> <11146N880 AT web2news DOT com> |
Subject: | Re: VGA DAC programming |
Lines: | 17 |
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Message-ID: | <FWPU9.23765$jM5.63384@newsfeeds.bigpond.com> |
Date: | Tue, 14 Jan 2003 18:43:50 +1000 |
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Organization: | Telstra BigPond Internet Services (http://www.bigpond.com) |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
1) BASIC "SCREEN 10" is BIOS "INT 0x10/AX=0x000F" 2) After writing to the ATC (Attribute Controller), you must re-enable Video access by outing 0x20 to 0x3C0, then inputting from either 0x3C0 or 0x3DA. Joel_S <jbs30000 DOT news DOT invalid AT web2news DOT net> wrote in message news:11146N880 AT web2news DOT com... > Great, I'll give it a try. Thanks. > I used the SCREEN command from a Basic compiler, and checked out all of > the registers (Graphics, Sequencer, CRT, and so on) and then compared > them with register values after using BIOS interrupt 0x10 and found > differences in register 0x3C0, but when I tired to change those specific > values, then I couldn't write to the screen. > Anyway, I'll try your code and see what happens. Thanks again. > -- > Posted via http://web2news.com the faster web2news on the web
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