[Coco] MPROM woes

[Joel Ewy]

Roger Taylor wrote:
> At 06:24 PM 11/15/2008, you wrote:
>> You DID notice that it came with a harness for (3) 9V batteries,
>> right? As I said - I have NO idea on the condition of that unit. It
>> was in a box I got from Art before he moved, hence why I wouldn't
>> "sell" it to you. Wouldn't have been right... Tony
>
> I resoldered the broken battery harness and it works great.  I do
> recall with my old MPROM board I owned years ago that if the 9v
> batteries were drained even just a little, it had trouble writing. 
> And it didn't take long at all to suck the power out of the
> batteries.  That was the part I hated the most, and not having a
> 25-27v unregulated power supply to feed into the board instead of the
> battery leads.  I have several 12v regulated supply units, but I don't
> want to risk trashing the board by doing any experiments like that. 
> MPROM boards are hard to come by.
>
I believe I used the MPROM adapter successfully with a wall wart of
appropriate specs.  But it has been a couple decades since then.

JCE