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- References: <38232130@kone.fipnet.fi> <judas.0hqa@tomtec.abg.sub.org>
- From: "Jyrki Saarinen" <jsaarinen@kone.fipnet.fi>
- Date: Wed, 31 Jan 96 19:45:12 UT
- Comments: Illegal date header - new date added by quicknews
- X-Original-Date: Wed, 31 Jan 96 19:33:38
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- Subject: Re: >>>>>>> The Future: Amiga goes PC
- Message-ID: <38232243@kone.fipnet.fi>
-
-
- > >Blitter c2p is never "super fast" because it involves very
- > >much blitting. I guess you are talking about XTRs blitterscreen
- > >mode where blitter c2p on 160x128 screen takes very little
- > >time, 50fps possible if scrambled buffer is used (very likely
- > >in XTRs case) or 25fps in linear buffer is used.
- >
- > On my A1200/030/25Mhz, the blittermode runs smoother than the
- > CPU-conversion.
- > I don`t know, what miracle the programmers did, but they did a great
- > job.
-
- Of course it is faster since your CPU is not able to render
- the screen any faster than the blitter is able to c2p it.
-
- > Why compare different machines ? On a CD32, its better to use akiko,
- > than CPU-C2P. This is also true for all machines with CPUs below
- > 68030/50mhz or 68040`s.
-
- Not always.
-
- > As the stock A1200 comes with no 68040, my claim was to build an akiko
- > into every new A1200 to gain speed for games.
-
- False. A good CPU+Blitter routine is faster, even on a 020
- or a 030. Akiko involves more memory moving, while CPU+Blitter
- routine does n-amount of passes (as many as can be done free while
- copying the chunky data to chip memory buffers to the blitter).
-
- -- _
- a Stellar programmer _ //
- "Amiga - back for the future" \X/
-