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- Path: sparky!uunet!pipex!unipalm!uknet!mcsun!news.funet.fi!funic!nntp.hut.fi!nntp!then
- From: then@vipunen.hut.fi (Tomi H Engdahl)
- Newsgroups: comp.sys.ibm.pc.misc
- Subject: Re: CRONOLOGIA demo
- Message-ID: <THEN.92Aug19205031@vipunen.hut.fi>
- Date: 19 Aug 92 19:50:31 GMT
- References: <92231.132430IP25179@portland.caps.maine.edu>
- Sender: usenet@nntp.hut.fi (Usenet pseudouser id)
- Organization: Helsinki University of Technology, Finland
- Lines: 35
- In-Reply-To: 's message of Tuesday, 18 Aug 1992 13:24:30 EDT
- Nntp-Posting-Host: vipunen.hut.fi
-
- In article <92231.132430IP25179@portland.caps.maine.edu> <IP25179@portland.caps.maine.edu> writes:
-
- > I just downloaded and watched the Cascada demo CRONOLOGIA (1991: can be
- > found at saffron.inset.com). Now that the desire to slit my wrists has
- > passed ( ;) It's a great demo, folks -- very depressing for a beginning
- > PC graphics programmer; though it's nice to know one *can* do such things)
-
- Yes. It is tryly a very great demo. I saw it first time in a large demo
- party in sweden. The Cascada group was showing there their demos and also
- coding. Unfortunately the cronologia demo did not work very well in the
- ICL computers they were using for showign their demos. The picture was
- disorted in some way.
-
- > I was under the impression that the physical size of the written-to screen
- > was hardware controlled. This is obviously erroneous given that the Cascada
- > folks not only make it large enough to have sprites go off the physical top
-
- There is some hardware control, but most of the functions in VGA card are
- user programmable in register level. It is possible to change scan, beginning
- and ending line of screen, sync pulses, etc. The effect is combination of
- some changes in VGA registers. I think that screen start and end are changed,
- maybe also scan rate.
-
- > contrast all the way up, so you can see even the 'black pixel' scan-lines).
- > So, the question: Anyone want to speculate on how they did it? My mind
- > just boggles at the thought.
-
- I speculated about different programming and hardware topics with their
- main programmer (he was only 16). I get some very interresting information,
- but he did not want to tell all his programming secrets.
-
- --
-
- Tomi.Engdahl@hut.fi "Don't force it; get a larger hammer"
- then@vipunen.hut.fi
-