[GEM Development] Update to SETTINGS.APP
Thomas Clayton
topcatdrc at yahoo.com
Tue Sep 13 14:02:25 PDT 2011
Drat!
I HAD had a book about programming graphics for the In-Color card. Back in 2007, when I moved out of house and into an apartment, I'd _LIKE_TO_ think I asked here about it and passed it on to you, John - but I _THINK_ I gave it to a local Friends of the Library group for their sale.
Within the last month, I downsized my storage - from 10x25 to 5x15 (sq ft) - unit. (I did NOT, of course, get rid of my GEM "holdings".) It is possible that I left that book along with two others on programming PC graphics within one of the two 'GEM-stuff' boxes - but I doubt it. All three, as I recall, were discarded in the 2007 move.
Like I said, "DRAT!"
(I _DO_ try to think of others, but time often doesn't permit a "full" inquiry.)
Sincerely,
Thomas Clayton
--- On Tue, 9/13/11, John Elliott <jce at seasip.demon.co.uk> wrote:
> From: John Elliott <jce at seasip.demon.co.uk>
> Subject: Re: [GEM Development] Update to SETTINGS.APP
> To: gem-dev at simpits.org
> Date: Tuesday, September 13, 2011, 2:37 PM
> And here's the other little
> project I've been working on: a driver for
> the Hercules InColor card, because that's the only way
> you'll get a
> colour display higher than 640x200 resolution out of the
> Amstrad PC1512.
>
> <http://www.seasip.info/AmstradXT/pc1512hic.html>
>
> If you're running GEM on a PC1512, the InColor card
> is a definite
> improvement over the motherboard chipset. 720x348 graphics
> rather than
> 640x200, and the card lets you do logic operations over all
> four planes
> at once so boxes, lines and text get drawn four times more
> quickly.
>
> While writing the driver I found and fixed a bug in
> the standard
> EGA/VGA driver, dealing with drawing dashed lines in
> REPLACE mode. I also
> created two new drivers for 8-colour and 4-colour VGA;
> these were mainly
> for my benefit, to test software at different colour
> depths. The new and
> corrected drivers can be found at
> <http://www.seasip.info/Gem/drivers3.html>.
>
> --
> John Elliott
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> gem-dev mailing list
> gem-dev at simpits.org
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>
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