Newsgroups: comp.sys.amiga.hardware Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!peck From: peck@ral.rpi.edu (Joseph Peck) Subject: Re: Idea: New graphics modes (30hz/25hz like current 60/50) Message-ID: <+b_h#c_@rpi.edu> Nntp-Posting-Host: ral.rpi.edu Organization: Rensselaer Polytechnic Institute, Troy NY References: Date: 14 May 91 15:19:07 GMT Lines: 55 In article mmm@reaper.Chi.IL.US (Michael Marvin Morrison) writes: >In article ronald@ecl014.UUCP (Ronald van Eijck) writes: >>In article peck@ral.rpi.edu (Joseph Peck) writes: >>> >>> I found some time on my hands last week, so I got to thinking about >>>new video modes for the Amiga. My thoughts ran along these lines: >>> >>> Why not take this reduction in frequency a step further, and >>>offer a 30hz/25hz mode. This would provide a 400/512 non-interlaced >>>signal and a 800/1024 interlaced signal. Now obviously this wouldn't >>>work on my 1080, but (demonstrating my lack of video display knowledge) >>>wouldn't this work on a multisync? [stuff] > >The 2024 monitor does something similar to this, as it has 15hz and 10hz display >modes. Although it plays some funky games with the signal, as it is sent out >something like this: > > __________________________ > | | | > | | | > | 640x400 | 368x400 | > | 1| 2| == 1008x800 > |_______________|__________| > | | | > | | | > | 640x400 | 368x400 | > | 3| 4| > |_______________|__________| > >And the monitor takes care of putting it back to normal via hardware. The 2024 >screens are non-dragable also. It was very sharp (although sorta liquid like) >and a 5x7 font looked just fine. Now let's see.. using some kind of "supreme >persistance" monitor, we could half this for maybe 1008x1200 (adding another >set of screens to the bottom) or maybe 1280x1200 at 1 (hert? :-) using 6 sets of >640x400 screens. But then again, that would only give us a max of ~256x171 text >resolution in a shell (using 5x7 font) or a mere 21 80x24 size windows open. :-) So is the A2024 monitor something made especially for Commodore? Or is there a hardware do-hickey that does all of the interfacing with a standard monitor? If Commodore can have monitors made for them, it seems like my initial idea is a fairly valid method of providing for (whatever) x 800 modes. > >-- >Michael M Morrison /| |\ >mmm@reaper.chi.il.us | | Cash, for Cache.. | | >reaper!mmm@miroc.chi.il.us \| Hmm.. sounds fair. |/ Joe Peck peck@ral.rpi.edu