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Groups > comp.sys.acorn.programmer > #659
| From | druck <news@druck.org.uk> |
|---|---|
| Newsgroups | comp.sys.acorn.programmer |
| Subject | Re: The truth about 256 colour screen modes on the Archimedes |
| Date | 2011-08-23 23:04 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <j31863$cc2$1@dont-email.me> (permalink) |
| References | <42680a53-dfa4-48b0-9784-e4bfceea506f@d25g2000yqh.googlegroups.com> <PYm*lapLt@news.chiark.greenend.org.uk> |
On 23/08/2011 15:58, Theo Markettos wrote: > Xavier<xltardy@gmail.com> wrote: >> Isn't it uncorrect to refer to the palette of these 256 colour screen >> modes on these machines as 'fixed' if you can alter it, even if it >> gives you a headache as it's impossible to get exactly what you want ? > > Given the above, you can only make small changes to the palette. And it > definitely does give you a headache! I don't think anyone managed to do anything useful with the limited programmability of the palette in classic 256 colour modes. The standard arrangement extended the pure 6bit RGB colour cube as best as it was possible to do with an extra 2 luminance bits. It lent itself quite well to fast colour matching and dithering when displaying higher colour depth material. ---druck
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The truth about 256 colour screen modes on the Archimedes Xavier <xltardy@gmail.com> - 2011-08-22 23:58 -0700
Re: The truth about 256 colour screen modes on the Archimedes Xavier <xltardy@gmail.com> - 2011-08-23 01:09 -0700
Re: The truth about 256 colour screen modes on the Archimedes Martin Wuerthner <spamtrap@mw-software.com> - 2011-08-23 12:08 +0200
Re: The truth about 256 colour screen modes on the Archimedes Theo Markettos <theom+news@chiark.greenend.org.uk> - 2011-08-23 15:58 +0100
Re: The truth about 256 colour screen modes on the Archimedes druck <news@druck.org.uk> - 2011-08-23 23:04 +0100
Re: The truth about 256 colour screen modes on the Archimedes Steffen Huber <spam@huber-net.de> - 2011-08-24 15:25 +0200
Re: The truth about 256 colour screen modes on the Archimedes Theo Markettos <theom+news@chiark.greenend.org.uk> - 2011-08-24 15:54 +0100
Re: The truth about 256 colour screen modes on the Archimedes Theo Markettos <theom+news@chiark.greenend.org.uk> - 2011-08-30 17:28 +0100
Re: The truth about 256 colour screen modes on the Archimedes druck <news@druck.org.uk> - 2011-08-31 18:24 +0100
Re: The truth about 256 colour screen modes on the Archimedes John Greenwood <newsgroups.86z@john-greenwood.co.uk> - 2011-08-26 09:17 +0100
Re: The truth about 256 colour screen modes on the Archimedes Xavier <xltardy@gmail.com> - 2011-08-26 11:17 -0700
Re: The truth about 256 colour screen modes on the Archimedes chrisbazley@bigfoot.com - 2011-09-03 02:03 -0700
Re: The truth about 256 colour screen modes on the Archimedes xltardy@gmail.com - 2013-12-29 12:03 -0800
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