Date : Thu, 25 Aug 2011 05:48:22 +0200
From : rick@... (Rick Murray)
Subject: Tube ROM
On 25/08/2011 01:19, J.G.Harston wrote:
> Rick Murray wrote:
No, he didn't...
> http://mdfs.net/Apps/Graphics/NewModes
Clever, but I think what was being asked for is a 4 colour MODE 0. Given
mono used 20K, I'd guess 4 colour would use 40K. Impossible [*] to achieve.
Best wishes,
Rick.
* - you could, I suppose, make an ugly hack to redefine the active
colour and under interrupt alter that every so-many scanlines,
then you'd get an 8 colour MODE 0. More if you consider the idea
of time-differential dithering. I'm not sure the Beeb is quite
up to altering colours on the fly as a line is being drawn. Either
way, it'd be a hack, nothing more.
--
Rick Murray, eeePC901 & ADSL WiFI'd into it, all ETLAs!
BBC B: DNFS, 2 x 5.25" floppies, EPROM prog, Acorn TTX
E01S FileStore, A3000/A5000/RiscPC/various PCs/blahblah...