[Coco] Upgrade MPI?

[Joe Grubbs]

Thank you all for helping to answer my questions on this. Like K Pruitt, I have my Cadillac sized 3024 which has been modified that I will continue to use with my CoCo3. Since the new 3124 is "virgin" I'll leave it alone and just use it with my CoCo2s. Better safe than sorry!

-Joe


> Date: Thu, 7 May 2015 16:57:52 +0000
> From: mmarlette at frontiernet.net
> To: coco at maltedmedia.com
> Subject: Re: [Coco] Upgrade MPI?
> 
> All,
> To go over what some have said about this.
> It is both hardware and software based. It takes both.
> As Mike has indicated, the Real Talker will cease to function on an upgraded MPI. Why?  Because they mapped the Real Talker in to a RESERVED section of the CC1/2's memory map, which just so happens to be the CC3's GIME address space,  as Robert has indicated. There could be other programs, I don't recall ATM. I at one time remapped the Real Talker and change all of the programs to use this new address.
> 
> So if you plug a non modified MPI into a CC3 and execute software that enables the conflict........anything is possible, damage to no damage can occur.
> But this is for sure... it is NOT a good situation. Thus the mod put out by Tandy....they didn't do anything unless it was necessary.
> My $0.02.
> Regards,
>