Re: RAM mod question for James McPhail

From: Philip Lord <philip_at_email.domain.hidden>
Date: Tue, 24 Jan 2006 00:20:28 +0900

Thanks a lot James. I may give this mod a go sometime in the future.

Cheers

Phil

On Jan 23, 2006, at 8:04 AM, James MacPhail wrote:

>> Ever since I read what you wrote about the 'LRamBo' 2 meg mod for the
>> apple lisa 512k card I've been intrigued, and the 4 meg mod for
>> Macworks Plus II.
>>
>> Where would I find information on doing these mods? I've searched the
>> internet using google, and found nothing.
>
> Hi Phil,
>
> At the moment, I can't find a good site offering both of these
> either. It
> appears that some of the more extensive Lisa information sites are
> offline,
> or perhaps have been dropped from Google's index.
>
> a) I did find the instruction sheet for the 2 MB mod in two places.
> Note
> that the contact info on the sheet is out of date (phone number and
> CompuServe address).
>
> 1. Go to this page and scroll the right hand list to ram512-1
> through -3.
>
> <http://lisa.sunder.net/cgi-bin/bookview2.cgi?zoom=0?image=0?book=6>
>
> 2. This site does not include pages 1 and 2, which were reverse
> engineered
> schematics of the 512K memory board. Since Apple schematics of the RAM
> board are available online (at the same site, for instance), I
> don't think
> this is a problem and page 3 is really all you need.
>
> <http://www.freeinfosociety.com/electronics/schemview.php?id=1421>
>
> b) I am happy to email the 4 MB modification to those who ask,
> please let
> me know if you would prefer the format to be: MacDraw (the original
> document), generic PICT, or Acrobat PDF. To avoid annoying the
> other list
> members, please send your email to me directly rather than replying
> to this
> posting.
>
> The 4 MB modification instructions do not include information for
> using the
> Sun Remarketing memory board (which has SIMM sockets). I suspect
> that J1 on
> that board is to support the 4 MB modification, but I have not
> tested it.
>
> To be clear, the 4 MB modification only works with a few operating
> environments, such as MacWorks Plus II. It also works with MacWorks
> Plus
> 1.1h, and if the memory is restricted to 3.875 MB, with MacWorks Plus
> 1.0.18.
>
> HTH,
>
> James
>
> James MacPhail "Think not of engineering as art,
> uo957_at_email.domain.hidden but of art as engineering"
> Sigma Seven Systems Ltd.
> james_at_email.domain.hidden <http://SigmaSevenSystems.com>
>
>
>
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Received on 2006-01-23 07:22:11