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- Path: news.cs.su.oz.au!metro!metro!news
- From: accolyte@wr.com.au (Accolyte)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: need help on A1200/030 board programming
- Date: 23 Feb 1996 15:26:55 GMT
- Organization: Information Services, The University of Sydney, NSW, Australia
- Distribution: inet
- Message-ID: <1189.6628T141T1560@wr.com.au>
- References: <4f4hiu$oum@ionews.io.org> <38232327@kone.fipnet.fi>
- <1596.6622T138T1200@wr.com.au> <4gb9ao$104@sunsystem5.informatik.tu-muenchen.de>
- NNTP-Posting-Host: dialup08.wr.com.au
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-
- >:> Do not rely on things like "blitter is earlier ready than cpu".
- >:> just test for it. won't make anything slower.
- >:
- >: I don't, that'd be crazy. it's just that I'm using 95% of that 7mb/sec
- >
- > Testing for blitter ready is not crazy.
-
- Argh, that's not what I meant :) I was just saying that "assuming the
- blitter is earlier ready than the cpu" would be crazy, and I never do
- that.
-
-
- >: on a 1200 without fastmem, so I guess it'd drop into 2 frames on a
- >: 4000 without fast :\
- >
- > yes, but I would not call this "not working". And if you use
- > tripple buffering, 4mb/sec-platforms won't drop to 2 frames.
- > And if they run it on a A4000 without fastmem, well... ;)
-
- Hehe, yeah that's fair enough.
-
-
- >: >|> > There are exceptions, for example cpu-scroll in chipmem. Will be jus
- >
- >: Still, even ignoring caches; A copy loop from one chip buffer to another
- >: chip buffer, is slower on my accelerated 1200 than it is without the card
- >: installed. That bites.. <sigh>
- >
- > yep, for things like shell-scrolling. But most other fx are fastmemable.
-
- Yeah, it's not really a problem, as long as the programmer recognises fast
- ram (which unfortunately a lot of games don't seem to do..).
-
-
-