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- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!wupost!eclnews!cec2!amc1
- From: amc1@cec2.wustl.edu (Adam M. Costello)
- Subject: 68060 and 68050
- Message-ID: <1992Sep15.223747.2792@wuecl.wustl.edu>
- Sender: usenet@wuecl.wustl.edu (Usenet Administrator)
- Nntp-Posting-Host: cec2
- Organization: Washington University, St. Louis MO
- References: <1992Sep15.015149.23801@mel.dit.csiro.au> <1992Sep15.161901.26603@enea.se>
- Date: Tue, 15 Sep 1992 22:37:47 GMT
- Lines: 37
-
- In article <1992Sep15.161901.26603@enea.se> tope@enea.se (Tommy Petersson) writes:
- >gre253@mis.csiro.au (Steven Green) writes:
- >-
- >- 68060 ? What ever happened to the 68050 ????
- >
- >Here is one explanation I've heard, it may be right:
- >
- >It was cancelled due to political reasons. People have always
- >compared Motorola and Intel processors, and they have had one
- >digit in common most of the time on processors of similar power.
- >
- >80186 - 68010
- >80286 - 68020
- >80386 - 68030
- >80486 - 68040
-
- I've usually imagined the correspondence to go more like:
-
- 80286 - 68000
- 80386 - 68020
- i486 - 68040
-
- >Maybe the 68050 design went into a dead end and it was cancelled, and
- >the 68060 stayed with it's name.
-
- Close. The story I heard is that odd-numbered 680x0 chips incorporate
- evolutionary changes over their predecessors, whereas even-numbered chips
- incorporate revolutionary changes. Motorola decided not to bother with
- evolving the 68040 into a 68050, choosing instead to revolutionize it
- into the 68060.
-
- I expect the i586 and the 68060 to have comparable features and power,
- although Motorola's architecture will, as always, be superior (my
- opinion!), except for the big-endian convention (I've always found that
- counter-intuitive).
-
- AMC
-