Article View: rec.games.programmer
Article #626Re: VGA, Retraces, and DMA
From: Ross Ridge
Date: Wed, 12 Aug 1992 11:50
Date: Wed, 12 Aug 1992 11:50
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3344 bytes
> Enough!!! This is rec.games.programmer, if you want to get into technical > discusions about VGA cards, DMA or IRQs for IBM PC's then take it to > comp.sys.ibm.pc.hardware or comp.os.msdos.programmer. 99% of the babble > here lately has nothing to do with game programming anymore, it's just > stupid questions and stupid answers about PC hardware. sl8nl@cc.usu.edu writes: >** FLAME ON ** >OK, buddy, you tell us what you want in here. Lessee, if we eliminate >VGA cards...eliminated...IRQs...eliminated...DMA...eliminiated... >there would be no games as they exist today!!! If your beliefs are >such that you can tell somebody program a split-screen, and they automatically >know how to do it, then you are wrong!!!! What about scaling, do you >know how to scale? Could you program it instantly for us? You tell me >how, without an IRQ or DMA, a computer is supposed to make a single beep of >music? > >We're here to learn, and there has been a heck of a lot of learning lately. >Different code has been posted to do things dealing with games, ideas have >been introduced that have been expanded into a wide range of subjects, >usually answering the original question better than any book can. IBM PC specific stuff doesn't belong here. There are much better place to asking these questions, and you'll get much better answers. All it's generated here is bunch of misinformation from people like you who know a bit but not enough about what they're talking about. Worse, it's stifiling real discussion about real game programming issues. >Theory is nice, it gives you something to think about. But as I said in >one of my earlier posts about perspective mapping, "Use Bresenham to draw >a line in memory and then map each row and column of pixels to this line." >That's theory...that's an answer to a question that could be implemented >on any machine, if anyone knew what I was talking about. Then code >was posted--for an IBM, but needless to say, it could be easily converted >to Amiga or Mac or Atari ST. That's fine. But your stupid Mode Y questions don't belong here. It's not a game programming question, it's a VGA hardware question. It no more belongs here than questions about while loops or recursive subroutines. >The point is, while some discussions _have_ gone overboard, they have taught >a great deal. I may be tired of reading IRQ messages right now, but that's >the breaks, and the people involved are learning more and more about how >the computer really works so they can create the best games. If you want to learn more about your IBM PC computer so you can programme games, or anything then read comp.os.msdos.programmer, or comp.ibm.pc.sys.hardware, or any of the other IBM PC related newsgroups. Ross Ridge -- Ross Ridge - The Great HTMU l/ // [OO][oo] ross@zooid.guild.org /()\/()/ uunet.ca!zooid!ross db //
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Newsgroups: rec.games.programmer Path: arc1-ca.pugleaf.net!sparky!uunet!uunet.ca!geac!zooid!ross From: Ross Ridge <ross@zooid.guild.org> Subject: Re: VGA, Retraces, and DMA Organization: ZOOiD BBS Date: Wed, 12 Aug 1992 11:50:21 GMT Message-ID: <1992Aug12.115021.26304@zooid.guild.org> References: <1992Aug11.130002.9779@zooid.guild.org> <1992Aug11.112004.58060@cc.usu.edu> Lines: 56