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From: ear@wpi.WPI.EDU (Eric A Rasmussen)
Newsgroups: comp.sys.dec.micro
Subject: Re: Rainbow EchoMail Digest
Message-ID: <1991Feb10.064845.11346@wpi.WPI.EDU>
Date: 10 Feb 91 06:48:45 GMT
References: <Added.IbgeL4i00UkTA5rk9_@andrew.cmu.edu>
Organization: Worcester Polytechnic Institute
Lines: 24

>   Agreed. The board you have, Jack, is useless if you want to expand
>beyond 256K. To do that you'll need a "memory adapter option"
>(PC1K1-AK) together with a "base memory module" (PC1XX-AD) which will
>give you up to 832K. [It may be possible to use some type of 8087
>board in place of the memory adapter but I don't know.]

>   A better approach is to swap in a 100B motherboard and then get a
>PC1XX-AD. There are a number of advantages to the 100B motherboard,
>not just in terms of memory.

I also own a Rainbow 100A, but without the memory expansion, and was wondering
where I might get my hands on one.  I got the machine for free, and don't want
to spend alot of money on it.  (I already own a 386)  However, I can get Dos
3.1 for the Rainbow and figured that it might be worth it to try to get the
256k board just to give it some marginal MS-Dos capabilities.  

As it is, I mainly use it as a terminal and to play rogue, which my roomate
and I managed to patch for the thing.

+---------< Eric A. Rasmussen - Mr. Neat-O (tm) >---------+ +< Email Address >+
|   A real engineer never reads the instructions first.   | | ear@wpi.wpi.edu |
|   (They figure out how it works by playing with it.)    | | ear%wpi@wpi.edu |
+---------------------------------------------------------+ +-----------------+
                     ((( In Stereo Where Available )))