Subject: Re: [stella] Credits (again) using venitian blind From: "Andy Welburn" <andrew.welburn@xxxxxxxxxxxxx> Date: Tue, 8 Jun 1999 14:17:21 +0100 |
hi all.. i've been lurking for a while now, and i think it's time i added my 2 pence.. I was playing Fast Food the last night and i noticed that in between rounds, the 'You're getting Fatter!' message scrolled from top to bottom quite nicely, would it be worth your while disassembling that and taking a peek at how they did it? seeya.. -----Original Message----- From: Eckhard Stolberg <Eckhard_Stolberg@xxxxxxxxxxxxxxxxxxxxx> To: stella@xxxxxxxxxxx <stella@xxxxxxxxxxx> Date: 07 June 1999 17:20 Subject: Re: [stella] Credits (again) using venitian blind >At 14:54 06.06.99 -0700, you wrote: > >>I originally wanted to see if we could generate a credit scroll using the >>2600 that might be legible enough for me to use for the documentary. The >>solutions people came up with involved flicker, which I don't think will be >>acceptable. > >What I don't understand is why flicker is unacceptable but interlacing >is mandatory? AFAIK a NTSC TV does 60 frames per second. The even frames >show the even scanlines of the picture while the odd frames show the >odd scanlines. A 30 Hz flicker display does pretty much just that, >except that it dosn't alternate whole scanlines, but only small parts >of them. Why isn't that acceptable for the video project? > >And why do the 60 Hz VCS display have to be artificially interlaced >when even TV stations use low res 60 Hz graphics for the logo that they >insert into the TV broadcast or for those scrolling stock prices on the >bottom of the screen in buisines shows? > >>I was just thinking, when looking at the chess kernel, that it should be >>possible to have 12 characters across using tripled sprites using this >>routine, without flicker. > >>Plus, by using all of the sprites you can probably also support >>underlining, plus the missiles and ball can be used for bullets, >>apostrophes or colons. > >I think that getting 12 characters this way would be possible, but >also using the missiles and ball would probably not work. If you >set the sprite to 3 copies, the coresponding missile would display >3 copies too. Besides having to do all the extra positioning would make >the code unnessessary complicated. > > >Ciao, Eckhard Stolberg > > > >-- >Archives (includes files) at http://www.biglist.com/lists/stella/archives/ >Unsub & more at http://www.biglist.com/lists/stella/ -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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