home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky comp.sys.ibm.pc.hardware:22719 comp.arch:9060
- Path: sparky!uunet!dtix!darwin.sura.net!jvnc.net!yale.edu!qt.cs.utexas.edu!cs.utexas.edu!sun-barr!west.West.Sun.COM!cronkite.Central.Sun.COM!texsun!exucom.exu.ericsson.se!news
- From: exuptr@exu.ericsson.se (exuptr@exu.ericsson.se)
- Newsgroups: comp.sys.ibm.pc.hardware,comp.arch
- Subject: Re: Does a 487sx shut down the 486sx??
- Message-ID: <exuptr.394.714847868@exu.ericsson.se>
- Date: 26 Aug 92 16:51:08 GMT
- References: <IeYSMJK00Voz8Vf8ZN@andrew.cmu.edu> <1992Aug19.212552.1@uncavx.unca.edu> <exuptr.352.714338827@exu.ericsson.se> <willmore.714417950@help.cc.iastate.edu>
- Sender: news@exu.ericsson.se
- Organization: Ericsson Network Systems, Inc.
- Lines: 60
- Nntp-Posting-Host: exupc236.exu.ericsson.se
-
- In article <willmore.714417950@help.cc.iastate.edu> willmore@iastate.edu (David Willmore) writes:
- >Ok, let me see if I have this right. The 486DX has the cpu core with
- >an fpu and an 8K I/D cache on one chip. The 486SX used to be 486DXs
- >which had fpu's which failed to pass test, but are now a die that is
- >specific only to them. The 486DX and 486SX are not pin compatible.
- >The 486DX2 is an internally clock doubled processor which is otherwise
- >just like a 486DX of half the processor speed.
-
- >Does anybody know for sure what all these chips are? Someone from Intel?
- >Dennis, maybe?
-
- >--David Willmore
- >willmore@iastate.edu
-
- Like I said, I have the book. Order from Intel (they will send free):
-
- 241245-001
- "Intel486 DX2 Mircoprocessor Data Book"
-
- This is the one that states
-
- " * Binary Compatible with Large Software Base
- ...
- * High Integration Enables On-Chip
- - 8 Kbyte Code and Data Cache
- - Floating Point Unit
- - Paged, Virtual Memory Management
-
- * 168-Pin Grid Array Package
- - Pin Compatible with Intel486 DX Microprocessor
-
- * IEEE 1149.1 Boundary Scan Compatibility
-
- * High Performance Design
- - 50 MHz/66 MHz Core Speed Using 25Mhz/33 Mhz Bus Clocks
- - RISC Integer Core with Frequent Instructions Executing in
- One Core Clock
- - 80, 106 Mbyte/sec Burst Bus
- - Dynamic Bus Sizing for 8-, 16-, and 32-Bit busses
- - Complete 32-Bit Architecture
-
- * Multiprocessor Support
- - Cache Consistancy Protocols
- - Support for Second Level Cache
- "
- Wish you could see the block diagram :-)
-
- 241257-001
- Little sales brochure on DX2's, showing the 50 on the cover.
-
- 241254-002
- "Intel486 DX2 Microprocessor Performance Brief" <it is not brief>
-
- ----------------------------------------------------------------------------
- "This must be Thursday. I never could get the hang of Thursdays"
- - D Adams
- - Patrick Taylor
- Ericsson Network Systems
- exuptr@exu.ericsson.se "Don't let the .se fool you"
- alternately, exuptr@ZGNews.Lonestar.Org
-