Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!microsoft!w-darekm From: w-darekm@microsoft.UUCP (Darek Mihocka) Newsgroups: comp.sys.atari.st Subject: Re: TT announcement Message-ID: <7727@microsoft.UUCP> Date: 17 Sep 89 21:15:25 GMT References: <3497@blake.acs.washington.edu> <545@cwjcc.CWRU.Edu> <22003@cup.portal.com> <1981@hudson.acc.virginia.edu> <1695@atari.UUCP> Reply-To: w-darekm@microsoft.UUCP (Darek Mihocka) Organization: Microsoft Corp., Redmond WA Lines: 38 In article <1695@atari.UUCP> kbad@atari.UUCP (Ken Badertscher) writes: >gl8f@astsun7.astro.Virginia.EDU (Greg Lindahl) writes: > >| 3. Plug in blitter and ROMS. Note the small speed increase, since you're >| running TurboST or QuickST already... > > I beg to differ here, Greg. TurboST 1.6 runs _much_ faster on a machine >with a blitter than one without. Least it seems that way to me. > >-- > ||| Ken Badertscher (ames!atari!kbad) > ||| Atari R&D System Software Engine > / | \ #include I beg to differ with _your_ observations Ken. My observations using a Mega ST with TOS 1.2 and 1.4 with and without the blitter, with and without different software accelerators. I don't disagree that Turbo ST runs faster with the blitter chip, since it checks for and uses the blitter, but the speed increases are far from being "_much_ faster". I'd use that term to apply to the speed increase obtained by using Turbo ST alone, and the term "_slightly_ faster" to describe the additional speed increase that the blitter gives you. Hope you're not trying to sell us some vaporware blitter chips . Someone else did mention that "your mileage will vary" but you have yet you convince me that the blitter chip can significantly outperform tightly coded assembler code in real life situations (not rigged Comdex demos). Why not just apply some of the same types of optimizations that Turbo ST uses in the next version of TOS? I'm sure there were better things to do with time and code than putting rainbows into the desktop. ------------------------------------------------------------------------------ Darek Mihocka ST Xformer II CIS: (out of order) Box 2624, Station B Quick Utilities GEnie: DAREKM Kitchener, Ontario MegaBlit SSG SPX DELPHI: DAREKM N2H 6N2 Shareware, not Vaporware BIX: darekm Canada Blitter chip sucks! CheapNet: ...!uw-beaver!microsoft!w-darekm (519)-747-0386 A mind is a terrible thing to waste, so JUST SAY NO TO TOS. Opinions expressed are my own and not those of anyone not named Darek Mihocka. ------------------------------------------------------------------------------