[Coco] MPI and Coco 3 Compatibility

[Kip Koon]

Bruce,
I went back through the recent emails and have found out that my 26-3124 MPI returns a 126 at location $FF90 so it is compatible with the Coco 3.  Until I started using the CocoSDC, I have not had any problems accessing the floppy drives at all.  I have 3 - 3.5" floppy drives on my Coco 3 and Coco 1.  If I ever am able to expand the desk area for my Coco Data Center, I will be running 3 - 3.5" floppy drives on a Coco 2 as well.  I have a Coco 2B that I want to add a color composite output to as well as upgrade to a 6309.  I've recently obtained a good Weller temperature controlled soldering station so now I can change out the 6809s in all my Cocos with HD63C09EP chips.  It will be interesting upgrading all my NitrOS9 installations as well, but I'm getting ahead of myself.  First the hardware upgrades.  :P  Take care my friend.

Kip Koon
computerdoc at sc.rr.com
http://www.cocopedia.com/wiki/index.php/Kip_Koon



-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Bruce W. Calkins
Sent: Tuesday, December 09, 2014 6:50 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] MPI and Coco 3 Compatibility


----- Original Message -----
From: "Kip Koon"

> Hi Fellow Coco 3 Enthusiasts!
>
> Ok, I know this topic has been mentioned a lot recently and I'm 
> currently reviewing my emails to find all the data, but I thought I'd 
> ask if there is a web site showing how to determine if a MPI is Coco 3 
> compatible and if it isn't what to do to upgrade it.
>
> I have a 26-3124 White MPI with an angled front, a 26-3024 White MPI 
> with a curvy front, and a Gray MPI with a curvy front with Mark 
> Marlette's Coco 3 pal installed.  I would like to determine which ones 
> are Coco 3 or Coco 1 or
> 2 compatible.  Thanks in advance for your help.
>
>
>
> Kip Koon
=====================
Physicaly; an upgraded 26-3124 will have a piggybacked chip wired in.  The
26-3024 will have a chip swapped out.  I don't have the part number of the original chip, but I'm sure someone can find out.  If the warrenty seal is intact on either model it is probably not upgraded.  Probably the best method is the PEEKs posted eariler this week.
Bruce W. 


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