[Floppertalk] EGA screen saves
Jim Leonard
floppertalk@berkhirt.com
Thu, 10 Jun 1999 00:51:42 -0500
On Mon, Jun 07, 1999 at 08:45:18AM -0600, jleyda wrote:
> > Cool! Whomever is in control of the code (Jeff?): make a
> > dump of EGA to
> > the disk just like CGA, except give it an extension of EGA. I'll take
> > it from there and make an EGA2GIF out of it.
>
> Is everything else really the same? I'm currently doing this for CGA
> screenshots:
> Save palette info byte from 40:65 to video ram at b800:3fff
> I then simply open a file, and dump 16k of data from b800:0->b800:4000.
>
> Is EGA bigger than 16k? How do I know what mode I'm in to know what
> extension to use? (i assume call INT 10, fn whatever to return screen mode
> and check?)
Forgive me; it's nothing close to the same. I will write a piece of code
that will properly save and restore an EGA screen. In fact, while I'm
at it, I will write ASM snippets that will properly detect 40 col text
mode, 80 col text mode, CGA, or EGA, and will save and restore screens
of that mode.
It will be up to you guys, however, to incorporate that code into flopper.
:-)
> Do we have any games that allow keyboard access that are EGA? (although
Victory Road, I believe?
> On this same note, text based games, (ms-adventure, dos stuff, whatever) is
> not being handled correctly by the screenshot converter program. I have not
> investigated that lately to give any more information. It may be something
> that flopper needs to do instead of the converter program.
No, I'll create a converter for those modes as well.
> > people in March, 700 in April, and 720 since then. :-D
>
> ah, they're just laughing at us.... ;)
I genuinely think they're interested! :-)
> Speaking of this list, is techie information like this appropriate for the
> mass throngs of people who are going to be subscribing? Perhaps 2 lists for
> flopper; one for tech info, one for general announcements and discussion?
Nah--there's not enough traffic to warrant two lists yet.
--
Jim Leonard http://www.oldskool.org/ Email: trixter@oldskool.org
Like PC games? Help support the MobyGames database: http://www.mobygames.com/
June 10, 1999: I have 406 email messages waiting to be answered--and I *always*
answer all of my email. It may take a while to get to them, but I do. Honest.
--
Oldskool thought of the day: "If a watchdog bit wasn't set within 1/60th of
a second, the entire unit would reset. This was so that when the board was
powered up and the program counter was in a random state, it would quickly
time out and restart. That was good. It also meant that my games had a
guaranteed frame rate of sixty frames per second, because if they didn't,
hey, GAME OVER. That was bad." -- Tim Skelly, Cinematronics
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