home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!swrinde!gatech!hubcap!charlet
- From: charlet@hubcap.clemson.edu (Charles E "Rick" Taylor IV)
- Subject: Re: A1200 - 68020EC ??
- Message-ID: <1992Dec12.172416.29335@hubcap.clemson.edu>
- Keywords: A1200 68020EC 68EC020
- Organization: Clemson University
- References: <1992Dec11.093004.10703@walter.cray.com> <1992Dec11.171839.19371@hubcap.clemson.edu> <Bz47Fr.75M@news.cs.andrews.edu>
- Date: Sat, 12 Dec 1992 17:24:16 GMT
- Lines: 38
-
- adap@edmund.cs.andrews.edu (Edsel Adap) writes:
-
- >>>What does the 'EC' in 68020 mean foe the Amiga A1200.
- >>>How can you economize (sp) a chip that is pretty basic to begin with?
- >>>What great features can you remove?
- >>>And if they did remove something, WHY? The 68020 is getting outdated
- >>>already, why degrade more than its age already has?
- >>
- >>24 address lines, so they put the chip in a cheaper case. Therefore, you
- >>can't address as much memory as a full '020. Else, it's pretty much the same
- >>beast.
- >>
- >>(Correct me if I'm wrong on this ... :) )
- >>
-
- >Yes, I think you are mistaken. However I can also be equally mistaken. But
- >the 68EC020 and the 68020 have the same number of address lines that is they
- >both have 24 bit address lines.
-
- Actually, I meant correct me on the bit about the cheaper case if I was
- wrong! According to innumerable sources, the 020 has a 32 address lines
- and the EC020 has 24.
-
- >What makes a 68EC020 different from the 68020 is the absence of the MMU in
- >the 68EC020.
-
- Well, the MMU is most definitely absent in the EC020 ... you'll get no
- arguments from me there. However, the 020 lacks an MMU as well.
-
- The 030 has an MMU, while the EC030 (or whatever it's called :) ) doesn't
- have one.
-
- Apologies if this horse has been beaten to death ...
- --
- + Rick __ + EMAIL:charlet@hubcap.clemson.edu + //\ + /|\ It's +
- | /aylor | IRC : Tomalek / The Romulan | \X/--\miga 500 | J rainy |
- +-------------+----------------------------------+----------------+----------+
- + "Every Girl Already Has A Boyfriend" --- Murphy's Law Of Dating... +
-