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- From: tpang@fraser.sfu.ca (Tsui Ting Debbie Pang)
- Subject: Re: Vhat? No flickerfixer in A4k? Vhat ees thees?
- Message-ID: <tpang.721974222@sfu.ca>
- Sender: news@sfu.ca
- Organization: Simon Fraser University, Burnaby, B.C., Canada
- References: <BxtLp7.JnE@usenet.ucs.indiana.edu> <1992Nov16.202918.25113@ra.msstate.edu>
- Date: Tue, 17 Nov 1992 04:23:42 GMT
- Lines: 52
-
- skip@tacky.cs.olemiss.edu (Skip Sauls) writes:
- >True, the A4000 has no flicker-fixer hack, but it does have something much
- >better called the AGA chipset and the 3.0 system software. The reason that
- >they did not put one in the A4000 is that it is not only an expensive part,
- >it is also a hack which has some problems.
-
- I don't see any big problem on my A3000. My monitor overscans correctly.
-
- >I have been using an A4000 since Friday with the exact same SVGA monitor
- >that I was using with my A3000. The only software that has problems are
- >EuroHacks and games that do not obey the rules. The problem goes away
- >completely if I use a multiscan that syncs down to 15kHz.
- >The 3.0 software will automatically "promote" older modes to use the dblNTSC
- >and dblPAL modes which do not flicker. And contrary to what others may have
- >said, it is very easy to get software that breaks the rules to work. With
- >the exception of some games and EuroDemos, all software that worked on the
- >A3000 works on the A4000. Of course, I'm the type of person who refuses to
- >keep trash on my hard drive, so that may be a factor.
- >The A4000's method of flicker-fixing in software and hardware has several
- >advantages over the A3000 approach. First, the annoying 1/2 line flicker
- >is gone, as is the jitter when a pointer is moved quickly. Also, every
- >screen is centered properly on the display and looks better than the A3000
- >does when using the same monitor.
-
- So when you are using a HiResInterlace mode, what is the output hor. frequency?
- Does it interlace? If it is not de-interlaced, then I'd imagine flicker exists.
- What method the A4000 treats the interlace mode in 640x400 for example? This
- is the mode I use most, with overscan.
-
- >A word to the wise: Don't listen to what MB and others might say. They have
- >shown time and again that they are not only annoying, they are also just plain
- >ignorant of the facts.
- >
- I know the AGA outputs the 640x400 in 31kHz, non-interlaced, thus the mode
- promotion. May be you just didn't mention that mode. And I have thought
- all along it was done with flicker fixing circuit!
-
- >>Sam Hulick | "You can't discover new oceans unless you have the
- >>shulick@indiana.edu | courage to lose sight of the shore." --Anon.
- >>(NeXTmail welcome) |
-
- >Skip Sauls, Amiga Advocate
- >skip@tacky.cs.olemiss.edu
-
-
- David Tse
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