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- Path: sparky!uunet!gatech!bloom-beacon!eru.mt.luth.se!lunic!sunic!aun.uninett.no!alf.uib.no!hsr.no!leikvoll
- From: leikvoll@hsr.no (Morten Leikvoll)
- Newsgroups: comp.sys.atari.st
- Subject: Re: More Official Falcon Specs wanted
- Message-ID: <1992Aug27.083542.19881@hsr.no>
- Date: 27 Aug 92 08:35:42 GMT
- References: <A14190@F.maus.de> <1992Aug26.105113.14515@hsr.no> <10004@uqcspe.cs.uq.oz.au>
- Sender: news@hsr.no
- Organization: Rogaland University Centre
- Lines: 42
-
- In article <10004@uqcspe.cs.uq.oz.au>, warwick@cs.uq.oz.au (Warwick Allison) writes:
- (some stuff deleted)
- > >And how much memory can it handle??
- >
- > This is an interesting question, since I believe even the more recent
- > Amigas have something like a 1-meg limit on "chip memory". The blitter
- > on the ST had no such restrictions and the Falcon blitter is fully
- > compatible with that one. I supose it could, technically be limited to
- > 4Meg - since the entire ST could only (theoretically :-]) handle 4Meg.
-
- The newest amigas has 2MB chip memory. This is the maximum that can (also in the
- future) be used for the chipmem. (The area $00000000-$00200000 is reserved for
- chipmem) Lots of changes has to be made if commodore want to increase it.
- On the Amiga running a code in chipmem while in hires with 16 colours, slows down
- the processor. And if you have a 68020 or higher (with a reasonable freq.), it
- can move data faster then the blitter...
-
- > >What about 'character screen' like the C64 and (i guess) 520 series. This lacks
- > >in the Amiga... (I'am an Amiga owner)
- >
- > I don't think anything uses HARDWARE "character screens" (as in C64 and
- > Atari 800) any more - the 520 certainly didn't (the text mode their is
- > still graphical). The reason is that software "character screens" can
- > EASILY be updated faster-than-the-eye-can read. And after all, text
-
- Faster-than-the-eye-can-read is not fast enough. Remember that in games there
- are loads of other things to be processed in one picture frame. If display is
- updated in 2 raster lines, that would be better than 50. How about 16x16 user
- definable characters??? Or even X times X, where X can be selected.
-
- > is only useful to be "read". Okay, tell me about redefined character
- > sets, and 4-pixel colour text and other fancies the old 8-bits had...
- > No point these days.
-
- YES! (there is always a point in increasing the speed!!!!)
-
- >
- > Oh, I forgot - PC's still have a text screen. For DOS.
-
- Yes, isn't it terrible using wordperfect (the old one)......
-
- -Morten Leikvoll (Is it short enough?)
-