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- Path: sparky!uunet!utcsri!skule.ecf!torn!news.ccs.queensu.ca!qucdn!leek
- Organization: Queen's University at Kingston
- Date: Thu, 5 Nov 1992 13:59:28 EDT
- From: <LEEK@QUCDN.QueensU.CA>
- Message-ID: <92310.135928LEEK@QUCDN.QueensU.CA>
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: A1200 Expansion Connector
- References: <AHANSFOR.92Oct29122553@bigwpi.wpi.edu>
- <36552@cbmvax.commodore.com> <ele0136.720799102@radon.sys.uea.ac.uk>
- Lines: 28
-
- In article <ele0136.720799102@radon.sys.uea.ac.uk>, ele0136@sys.uea.ac.uk (A.
- Harvey) says:
- >
- [stuff deleted]
-
- >Is there anyway I could connect my present GVP Series II HD + 4MB (16bit) fast
- >RAM
- >to one of these new 1200's ? I'd like to upgrage but I can't really afford to
- >get a 1200 + Hard Drive + 6MB total memory (as I have now).
-
- Not very likely. 1200 was designed to cut cost. The 68020 processor is
- running at 14.3MHz (or so). Putting a 500 style 86 pin expansion port or
- a Zorro port would require extra synchronization logics (cost $$$) to
- slow things down to 7.14MHz for the expansion bus.
-
- It doesn't mean some 3rd party(ies) won't make a 1200 -> 500 expansion
- port with all that extra logics for users to migrate. The amount of
- complexity is comparable to synchronization logics that is required for
- the A2620's (or other 14MHz accelerators) 68020 to talk to the
- motherboard as a 7.14MHz CPU. Exactly how much that will cost, how
- much the market would pay for it and how many would buy it is the
- question. On the other hand, a WELL DESIGNED peripheral might be able
- to work at the higher clock speed with MINOR changes in the circuit
- design.
-
- K. C. Lee
- Elec. Eng. Grad. Student
- Disclaimer: I haven't seen a 1200 nor its hadrware specs.
-