[Coco] Any resolution to patching a Multipack for Coco 3?

Mark Marlette mmarlett at isd.net
Sat May 8 06:56:25 EDT 2004

At 10:23 PM 5/6/2004 -0700, you wrote:


No real two schools about it. If you want it done right, do the patch. The 
problem is that in the non modified packs, the address range of the MPI 
ghosted the GIME. Two devices on the bus at the same time is called bus 
conflict, not a desirable thing. The PAL updates for the 26-3024 are 
available at Cloud-9 and I do the other satellite updates as well but that 
is a Time and Material charge and I charge $25 plus s/h. Paul Barton has a 
web page up on how to do the modification if you want to do it yourself on 
the 26-3124.

This simple test will detect if any Mulitpak has been upgraded
to work with a CoCo3. From DECB prompt enter the following:


If 126 is returned then the multipak has been upgraded. If
it returns 255 then it has NOT been upgraded.

The test above seems to work in the models I have upgraded......



>I was reading through my old Rainbows the other day as I was trying to get
>my floppy controller working with my Multipack on my Coco 3.
>Apparently, there were 2 schools of thought with patching the newer, white
>Multipacks with a Coco 3, with some people saying it had to be done, and
>some people saying it did not need to be done.
>The group that said it needed to be done suggested that slow degeneration of
>the computer (the GIME chip?) was possible if you used an unpatched
>Now that it's been 10+ years, has anyone experienced any faults?  Are the
>parts still available to patch the 26-3124s?  Does this need to be done?
>Thanks all,
>Coco mailing list
>Coco at maltedmedia.com

More information about the Coco mailing list