Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!hp4nl!dutrun!duteca!eddy
From: eddy@duteca (Eddy Olk)
Newsgroups: comp.sys.amiga.hardware
Subject: LUCAS with 68030 in A2000
Keywords: LUCAS, 68030
Message-ID: <1053@duteca.UUCP>
Date: 12 Sep 90 14:28:39 GMT
Reply-To: eddy@duteca.tudelft.nl (J.G.E. Olk)
Organization: Delft University of Technology, Dep. of Electrotechnical engineering.
Lines: 32


I'm planning to build the LUCAS board (own PCB) with a 68030 and use it in my
A2000 (Rev. 4.4):

    Is it possible to simply replace the 68020 by a 68030 (except for the
    different pinout), or do I need to change PAL equations?

    Any experiences with LUCAS boards working (or not) in A2000?
    Any problems with expansion cards (A2052, A2088, A2090A)?

    Can the U9 problems be circumvented by using C1* and C3*? I'm putting the
    PCB in the CPU slot so these signals are easier to use, I have to generate
    7M myself though.

    What function do the jumpers have near U4 in the schematics of the Pals &
    Glue? They are not mentioned in the article.

    Are there any schematics of 32-bit memory boards for LUCAS? At the moment
    I'm considering to build a 4Mb 32-bit memory board using four 1Mbit SIMM's,
    a Signetics 74F1761 (DRAM and Int Vec Controller) and a 74F1762 (Memory
    Address Multiplexer).

I hope these questions are not to hard to answer.

Thanks,
Eddy
-- 
______________________________________________________________________
 Eddy Olk                         Delft University of Technology 
 EMAIL: eddy@duteca.tudelft.nl    Department of Electrical Engineering
        EDDY@ET.TUDELFT.NL        Section Computer Architecture
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