Re: Hacking 1764 RAM expansion to 512KB

From: Marko Mäkelä (Marko.Makela_at_HUT.FI)
Date: 2002-03-27 08:09:42

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    On Wed, 27 Mar 2002, Spiro Trikaliotis wrote:
    > I'm surprised: In,
    > I see U18 as 27128/27256 EPROM. Although I have programmed a REU before and
    > read the user's manual, I did not know that there is an EPROM socket 
    > inside a REU! 
    > What is it used for?
    Perhaps it could be used as an external C128 Function ROM.  I haven't
    tried it; I'm just guessing.
    BTW, does the service manual list both versions of the REC chip?  One is
    in a square package (PLCC?), while the other is in ceramic dual-in-line
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