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- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!grebyn!daily!richk
- From: richk@grebyn.com (Richard Krehbiel)
- Subject: Re: A1200 - 68020EC ??
- In-Reply-To: tmc@spartan.ac.BrockU.CA's message of Fri, 11 Dec 1992 17:11:45 GMT
- Message-ID: <1992Dec12.013813.21007@grebyn.com>
- Lines: 18
- Sender: richk@grebyn.com (Richard Krehbiel)
- Organization: Grebyn Timesharing
- References: <1992Dec11.171145.13055@spartan.ac.BrockU.CA>
- Date: Sat, 12 Dec 1992 01:38:13 GMT
-
- In article <1992Dec11.171145.13055@spartan.ac.BrockU.CA> tmc@spartan.ac.BrockU.CA (Tim Ciceran) writes:
-
- > In article <1992Dec11.093004.10703@walter.cray.com> walterb@sequoia.cray.com
- > (Walter Boese Jr.) writes:
- >
- > >What does the 'EC' in 68020 mean for the Amiga A1200.
- >
- > No MMU.
-
- The 68020 never had an MMU. I think you're confusing with the
- 68EC030, which is a 68030 without an MMU.
-
- The only difference that's been explained is that it's limited to
- addressing 16M of physical memory, just like the 68000 is. I also
- know it's in a plastic surface-mount package, which is much cheaper to
- manufacture, and easier to assemble than the 68020 in it's ceramic
- PGA. Besides the reduction in address space, it may have a simplified
- bus interface as well, but now I'm just speculating.
- --
- Richard Krehbiel richk@grebyn.com
- OS/2 2.0 will do for me until AmigaDOS for the 386 comes along...
-