home *** CD-ROM | disk | FTP | other *** search
- Path: informatik.tu-muenchen.de!fischerj
- From: fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: TMapping again!
- Date: 20 Feb 1996 02:32:51 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4gbbsj$104@sunsystem5.informatik.tu-muenchen.de>
- References: <4e38rv$9ic@sunsystem5.informatik.tu-muenchen.de> <4ffnjs$dcq@sunsystem5.informatik.tu-muenchen.de> <xJSGMMD0aaz6@point86.people-s.people.de>
- NNTP-Posting-Host: hphalle5.informatik.tu-muenchen.de
- X-Newsreader: TIN [version 1.2 PL2]
-
- Tim Boescke (azure@people-s.people.de) wrote:
- : fischerj@informatik.tu-muenchen.de (Juergen Rally Fischer) erzeugte am 09.02.1996 unter dem
- : Betreff "Re: TMapping again!" :
-
- : JF> |> : > left and right edges keeping LeftX, RightX, LeftDelta and RightDelta
- : JF> |> : > in registers avoiding some memory accesses. Ok, this is part of the
- : JF> |>
- : JF> |> : Actually this is better on 80x86, too.
- : JF>
- : JF> because an x86 got more regs, huh ? ;)
- : JF>
- : JF> |>
- : JF> |> What is best on the 80x86? 80x86 does less memory access during
- : JF> |> a tmap polygon loop?
- : JF>
- : JF> no, why should it.
-
- : Actually a x86 has some Burst-whatever L2-Cache, which is a lot
- : faster than 680x0 mem-acces...
-
- well, what is this now, 486 vs 020 ? most 286 also got no L2 cache ;)
-
- 040 got a separate L1 datacache. Well, bombed more by texture read,
- but 8 more regs that can be quick destinations while a add to cache
- costs 3 cycles on 486.
-
- well, again, what is this now about ;) x86 win by more MHz/$, that's all.
-
- : --
- : +--------------------------------------------------------------------+
- : | - AZURE@PEOPLE-S.people.de - Tim Boescke - AZURE /atw.bzr |
- : +------------------<programming on:AMIGA,PC,C64,PLUS/4,VCS2600>------+
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-