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- Path: informatik.tu-muenchen.de!fischerj
- From: fischerj@informatik.tu-muenchen.de (Juergen "Rally" Fischer)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: need help on A1200/030 board programming
- Date: 8 Feb 1996 15:18:57 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: inet
- Message-ID: <4fd491$k8r@sunsystem5.informatik.tu-muenchen.de>
- References: <4f4hiu$oum@ionews.io.org> <38232327@kone.fipnet.fi> <743.6612T966T1128@wr.com.au>
- NNTP-Posting-Host: hphalle4e.informatik.tu-muenchen.de
- Originator: fischerj@hphalle4e.informatik.tu-muenchen.de
-
-
- In article <743.6612T966T1128@wr.com.au>, accolyte@wr.com.au (Accolyte) writes:
- |> Organization: Information Services, The University of Sydney, NSW, Australia
- |> Lines: 19
- |> Distribution: inet
- |> Message-ID: <743.6612T966T1128@wr.com.au>
- |> References: <4f4hiu$oum@ionews.io.org> <38232327@kone.fipnet.fi>
- |> NNTP-Posting-Host: dialup21.wr.com.au
- |> X-Newsreader: THOR 2.22 (Amiga;TCP/IP) *UNREGISTERED*
- |>
- |>
- |> >> It appears that these boards are almost two times slower when accessing
- |> >> CHIP RAM, than a basic A1200 (no acel. no extra RAM)!?
- |> >>
- |> >> 12 gauge, Blizzard and others, on the other hand, are two times faster
- |> >> (which is normal).
- |> >>
- |> >> So, the question is - is there a solution to make these 030s access
- |> >> CHIP RAM at normal speed?
- |>
- |> > Yep. This is true, but it is not a big problem.
- |>
- |> It IS a big problem as far as compatibility with software written for
- |> unaccelerated machines goes. Anything that makes maximum use of the
- |> unexpanded 1200's chip accessing per frame will fail dismally on such an
- |> accelerator. Of course, some data could be put in fastram, but that isn't
-
- tripple-buffered effects rule here. the 030 will lose some frames, but
- won't fall back to 25fps. The thing is that sometimes 25fps look
- better than a effect sometimes loosing a frame :\
-
- |> going to change any programs that have already been written.
- |>
-
- That's true, seen from that point it is a problem. Don't want to sound
- like one of the OS-gurus ;) but if software behaves that way it mostly
- is done not so well.
-
- There are exceptions, for example cpu-scroll in chipmem. Will be just
- faster on synchronous cpus. What effect are you refering to ?
-
- |>
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-