home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.amiga.hardware,comp.sys.amiga.misc
- Path: news.kei.com!ub!dsinc!scala!news
- From: dave.haynie@scala.com (Dave Haynie)
- Subject: Re: EDO RAM and Amiga?
- Sender: news@scala.scala.com (Usenet administrator)
- Message-ID: <1996Jan23.195237.5934@scala.scala.com>
- Date: Tue, 23 Jan 1996 19:52:37 GMT
- Reply-To: dave.haynie@scala.com (Dave Haynie)
- References: <wfblanDKzuKL.IC4@netcom.com> <4d2g5v$inp@serpens.rhein.de> <wfblanDL0p1y.H10@netcom.com> <4d583r$nlh@dole.uninett.no> <4d5l39$pkk@dole.uninett.no> <DLAF95.331@wombat.hanse.de> <4diq8r$qqp@serpens.rhein.de> <4dl25v$smr@cpca3.uea.ac.uk>
- Nntp-Posting-Host: gator
- Organization: Scala Computer Television, US Research Center
-
- In <4dl25v$smr@cpca3.uea.ac.uk>, dmb@sys.uea.ac.uk (Merlin) writes:
- >In article <4diq8r$qqp@serpens.rhein.de>, mlelstv@serpens.rhein.de says...
- >>root@wombat.hanse.de (Bernd "Bernie" Meyer) writes:
-
- >>>> 2. EDO-ram is intended for bus-speeds beyond 33MHz and has little
- >>>> or no value on slower systems.
-
- >>>Nonsense.
-
- >>No nonsense. Slower systems have problems to utilize the higher
- >>potential memory bandwidth.
-
- >What it all boils down to is yes it works but unless you've got an Amiga or
- >another computer with a bus speed of 33MHz or over then EDO RAM makes no
- >difference.
-
- Actually, 68030 systems from 25MHz on up could easily have benefitted
- from EDO RAM. We could have done one wait-state burst, rather than
- two, with EDO RAM in the A3000.
-
- The reason you don't see any speedups with EDO RAM on older systems is
- that EDO RAM just plain didn't exist back then. You have to designed
- a memory controller to use EDO's special feature (data hangs valid
- after you take away CAS); if your memory controller doesn't know about
- EDO, it'll behave just like any other page-mode part.
-
- Since virtually every 33MHz or slower system was designed before EDO
- parts were out, EDO parts as a rule don't speed up systems that
- slow. But this not based on EDO's suitability in slower systems.
-
- Dave Haynie | ex-Commodore Engineering | for DiskSalv 3 &
- Sr. Systems Engineer | Hardwired Media Company | "The Deathbed Vigil"
- Scala Inc., US R&D | Ki No Kawa Aikido | info@iam.com
-
- "Feeling ... Pretty ... Psyched" -R.E.M.
-
-