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Groups > comp.sys.apple2.programmer > #372
| From | Jerry <awanderin@yahoo.ca> |
|---|---|
| Newsgroups | comp.sys.apple2.programmer |
| Subject | Re: Fastest method to copy/process a range of bytes? |
| Date | 2012-08-11 01:03 -0600 |
| Organization | bbs-scene usenet news |
| Message-ID | <m3628pj4fv.fsf@yahoo.ca> (permalink) |
| References | <jvs69d$qa1$1@news.xmission.com> <mdGdnWkVEqOuvb7NnZ2dnUVZ_vednZ2d@earthlink.com> <f99248c6-8765-442e-8f94-6ac6affd2dd1@googlegroups.com> <575d7c07-cfe8-4de6-bd0f-f9d4c04f0428@googlegroups.com> <tbGdnf9t8cXP1LnNnZ2dnUVZ_oGdnZ2d@earthlink.com> |
"Anton Treuenfels" <teamtempest@yahoo.com> writes: > "Antoine Vignau" <antoine.vignau@laposte.net> wrote in message > news:575d7c07-cfe8-4de6-bd0f-f9d4c04f0428@googlegroups.com... >> (grrr, faster than light, pffoouu) >> >> ...faster than: >> >> LDY #index >> LDA [dpAddress],y >> ... >> >> With some tricks, that code above can be rewritten LDA (dpAddress),y >> and it will save some cycles but you need to tell the CPU in which >> 64kB bank your data is. >> >> Antoine > > There's all kinds of tricks the 65816 can do that the 6502 can't. Yes, if you're using the 816 then you can use MVN/MVP to get 7 cycles/byte. My memory is fuzzy, but I think the IIgs graphics wizards used things other than MVN/MVP for even faster memory moves. -- -- Jerry awanderin at yahoo dot ca
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Fastest method to copy/process a range of bytes? Egan Ford <datajerk@gmail.com> - 2012-08-07 16:53 -0600
Re: Fastest method to copy/process a range of bytes? Antoine Vignau <antoine.vignau@laposte.net> - 2012-08-07 18:57 -0700
Re: Fastest method to copy/process a range of bytes? Daniel Kruszyna <dan@krue.net> - 2012-08-08 15:28 +0000
Re: Fastest method to copy/process a range of bytes? aiiadict@gmail.com - 2012-08-07 22:07 -0700
Re: Fastest method to copy/process a range of bytes? "Michael J. Mahon" <mjmahon@aol.com> - 2012-08-08 10:49 -0700
Re: Fastest method to copy/process a range of bytes? "Michael J. Mahon" <mjmahon@aol.com> - 2012-08-08 10:59 -0700
Re: Fastest method to copy/process a range of bytes? "Anton Treuenfels" <teamtempest@yahoo.com> - 2012-08-08 21:27 -0500
Re: Fastest method to copy/process a range of bytes? Antoine Vignau <antoine.vignau@laposte.net> - 2012-08-08 22:12 -0700
Re: Fastest method to copy/process a range of bytes? Antoine Vignau <antoine.vignau@laposte.net> - 2012-08-08 22:23 -0700
Re: Fastest method to copy/process a range of bytes? "Anton Treuenfels" <teamtempest@yahoo.com> - 2012-08-09 18:35 -0500
Re: Fastest method to copy/process a range of bytes? Jerry <awanderin@yahoo.ca> - 2012-08-11 01:03 -0600
Re: Fastest method to copy/process a range of bytes? Antoine Vignau <antoine.vignau@laposte.net> - 2012-08-11 11:33 -0700
Re: Fastest method to copy/process a range of bytes? mmphosis <mmphosis@macgui.com> - 2012-08-09 06:09 +0000
Re: Fastest method to copy/process a range of bytes? mmphosis <mmphosis@macgui.com> - 2012-08-09 09:40 +0000
Re: Fastest method to copy/process a range of bytes? "Anton Treuenfels" <teamtempest@yahoo.com> - 2012-08-09 18:54 -0500
Re: Fastest method to copy/process a range of bytes? Antoine Vignau <antoine.vignau@laposte.net> - 2012-08-09 17:48 -0700
Re: Fastest method to copy/process a range of bytes? Antoine Vignau <antoine.vignau@laposte.net> - 2012-08-09 17:46 -0700
Re: Fastest method to copy/process a range of bytes? Michael J. Mahon <mjmahon@aol.com> - 2012-08-10 15:25 -0500
Re: Fastest method to copy/process a range of bytes? Antoine Vignau <antoine.vignau@laposte.net> - 2012-08-10 14:23 -0700
Re: Fastest method to copy/process a range of bytes? Egan Ford <datajerk@gmail.com> - 2012-08-12 08:56 -0600
Re: Fastest method to copy/process a range of bytes? "Anton Treuenfels" <teamtempest@yahoo.com> - 2012-08-12 23:27 -0500
Re: Fastest method to copy/process a range of bytes? Egan Ford <datajerk@gmail.com> - 2012-08-13 11:18 -0600
Re: Fastest method to copy/process a range of bytes? Egan Ford <datajerk@gmail.com> - 2012-08-11 15:58 -0600
Re: Fastest method to copy/process a range of bytes? Egan Ford <datajerk@gmail.com> - 2012-08-11 16:16 -0600
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