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- From: perfred@gullregn.idt.unit.no (Per Fredrik Solberg)
- Newsgroups: comp.sys.ibm.pc,comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
- Subject: Re: Graphics Accelerator Cards
- Message-ID: <PERFRED.92Nov20171529@gullregn.idt.unit.no>
- Date: 20 Nov 92 22:15:29 GMT
- References: <1992Nov17.213906.504@cbnewsh.cb.att.com>
- <1992Nov19.094530.5007@news.uni-stuttgart.de>
- Sender: news@ugle.unit.no (NetNews Administrator)
- Organization: Div. of CS & Telematics, Norwegian Institute of Technology
- Lines: 23
- In-Reply-To: skok@itwds1.energietechnik.uni-stuttgart.de's message of Thu, 19 Nov 1992 09:45:30 GMT
-
- In article <1992Nov19.094530.5007@news.uni-stuttgart.de> skok@itwds1.energietechnik.uni-stuttgart.de (Holger Skok) writes:
-
- > Due to the antiquated hardware design of the PC the CPU has to put the
- > image onto the Windows screen pixel by pixel and all that via the slow
- > AT-bus. 640x480x256 - that's a lot of info to be put into the VRAM on
- > your card (How many MB does that amount to, by the way? I could never
- > get that right). And that takes TIME.
- > >
- > For a quick fix, try switching to the plain vanilla VGA-driver included
- > with Windows. That'll only give you 16 colours, but at the same time it
- > reduces the amount of info on the screen by a factor of 16. Consequently
- ^^
- Not quite. 256 colors require 1 byte per pixel, whereas 16 colors
- require 4 bits per pixel; thus, the amount of video data is only
- reduced by a factor of 2.
-
- > things like scrolling are a lot speedier.
- >
- > HSK
-
-
- Per Solberg
- pso@si.no / perfred@idt.unit.no
-