home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!spool.mu.edu!sdd.hp.com!think.com!enterpoop.mit.edu!eru.mt.luth.se!lunic!sunic!seunet!comm!news.nexus.comm.se!news!Thomas.Tornblom
- From: Thomas.Tornblom@nexus.comm.se (Thomas Tornblom)
- Newsgroups: comp.sys.intel
- Subject: Re: Cyrix 486SLC/DLC compatibility issues and NextStep....
- Message-ID: <THOMAS.TORNBLOM.92Dec21140423@beck.nexus.comm.se>
- Date: 21 Dec 92 13:04:23 GMT
- References: <1gq3d1INNg8g@iraul1.ira.uka.de>
- Sender: news@nexus.comm.se
- Organization: Communicator Nexus AB
- Lines: 24
- In-Reply-To: S_JUFFA@iravcl.ira.uka.de's message of 17 Dec 1992 14: 38:25 GMT
-
-
- I've been following the discussion on the different x86 processors
- with some interest as I have a Sun386i with a 20 MHz 38{6,7}DX pair.
- I've been thinking of replacing the 386 with a Cyrix 486DLC, which
- would be a pop-in. My concern is how is cache coherency handled in
- this (or these kind of) processor? I assume that the cache can be set
- up only to cache RAM, but what about DMA transfers? Is the cache
- controller part listening to DMA requests or does it flush the cache
- on bus requests?
-
- I'm not all that familiar with the intel junk, I've mostly been
- working with Motorola 68k family processors.
-
- I'm also interested in how to set up the 486DLC cache.
-
- Note that this machine runs SunOS, not messy dos or windoze.
-
- Thanks,
- Thomas
- --
- Real life: Thomas Tvrnblom Email: Thomas.Tornblom@Nexus.Comm.SE
- Snail mail: Communicator Nexus AB Phone: +46 18 171814
- Box 857 Fax: +46 18 696516
- S - 751 08 Uppsala, Sweden
-