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- From: tmc@spartan.ac.BrockU.CA (Tim Ciceran)
- Subject: Re: A1200 - 68020EC ??
- Message-ID: <1992Dec11.211122.20880@spartan.ac.BrockU.CA>
- Organization: Brock University, St. Catharines Ontario
- Date: Fri, 11 Dec 1992 21:11:22 GMT
- Lines: 36
-
- In article <1gam43INNfuj@uwm.edu> bloc1469@ee.ee.uwm.edu (Gregory R. Block)
- writes:
-
- >>>What does the 'EC' in 68020 mean for the Amiga A1200.
- >>No MMU.
-
- >Actually, while true, that isn't what they moved. The 68020 has never
- >had a built in memory-management unit. It has always been external in
- >the form of a 68851.
-
- Ah right, <slap> :).
-
- >No, with the 68EC020, the only difference is the packaging and a loss
- >of some pins: Let me explain.
-
- >The 68EC020 has a 32-bit dataspace, and operates in 32-bits. They
- >have removed 16-bits of dataspace, though it still operates in
- >32-bits. So while everything is the same as the 68020, the 68EC020 is
- >limited to a 16-megabyte address space.
- >
- >Make sense? Thought so. :)
-
- Got it!
-
- >>Expense. The EC020 is quite suitable for an entry-level machine and
- >>most people will not be inclined to run Unix or virtual memory on
- >>such a machine. The alternative is another 68000. Don't give them any
- >>ideas :).
-
- >Well, actually, I do believe that the EC020 is around for embedded
- >control applications. You know, 68EC020, 68020 for Embedded Control?
- >;)
-
- Good acronym, although I'd imagine most people will suspect it means
- EConomy model :).
-
-