home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!sun-barr!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!uwm.edu!rutgers!cbmvax!mks
- From: mks@cbmvax.commodore.com (Michael Sinz)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Any chance we wills see an EC040 accel?
- Message-ID: <33696@cbmvax.commodore.com>
- Date: 27 Jul 92 13:57:53 GMT
- References: <1992Jul22.111917.1460@sarah.albany.edu> <1992Jul22.214219.6889@mpifr-bonn.mpg.de> <dej.01c1@qpoint.ocunix.on.ca> <1992Jul27.005044.16576@cheshire.oxy.edu>
- Reply-To: mks@cbmvax.commodore.com (Michael Sinz)
- Organization: Commodore, West Chester, PA
- Lines: 30
-
- There are a number of reasons why there are not an 68EC040 boards out there
- yet.
-
- 1) The 68EC040 is rather new and the timing on the EC part is different
- than that of the regular part. For board designs that are tight,
- this can be a problem.
-
- 2) The V37.175 ROM can not handle a 68EC040 CPU. This is because the
- ROM was finished before the 68EC040 CPU was finalized and some of
- the technical issues are not addressed in the V37.175 ROM. The
- newer V37.300 and V37.350 ROMs work with the 68LC040 and 68EC040.
- (Note that these are the new ROMs that also added the PCMCIA support
- needed for the A600. They are currently called 2.05 since they
- are very minor upgrades to the 2.04 ROMs.)
-
- 3) The main reason people tend to buy 68040 CPUs is for the speed it gives
- them. A major part of this speed is the FPU in the 68040. It is
- blindingly fast. The 68EC040 and 68LC040 does not have this FPU.
-
- That all said, I am sure that someone will build an EC040 CPU card.
- The CPU is much cheaper and the integer performance is just as good as
- the 68040.
-
- /----------------------------------------------------------------------\
- | /// Michael Sinz - Senior Amiga Systems Engineer |
- | /// Operating System Development Group |
- | /// BIX: msinz UUNET: mks@cbmvax.commodore.com |
- |\\\/// |
- | \XX/ "I think not." said Ren'e Descartes, then he vanished. |
- \----------------------------------------------------------------------/
-