[Coco] Help on Breaking the 64KB Barrier on the Coco 2

[Tom Seagrove]

I have some sort of expansion for a CoCo2 somewhere boxed up.  I will have to dig it out and pass on more information....

On Jul 18, 2012, at 9:56 PM, RJRTTY at aol.com wrote:

> 
> In a message dated 7/18/2012 5:16:19 A.M. Eastern Daylight Time,  
> computerdoc at sc.rr.com writes:
> 
> Hello  All,
> 
> 
> 
> Is there a memory expansion upgrade available for the 64KB  Coco 2?  I'd 
> like
> to go beyond the 64KB barrier. I'd want it to be  compatible with NitrOS-9
> Level II.  I read somewhere on the internet  that a different memory
> management scheme had been created for the COCO 1  & 2 that had a driver
> written for OS-9 that used some type of bank  switching scheme.   Any
> thoughts?
> 
> 
> 
> Kip
> 
> 
> 
> 
> 
> Hello all,
>     I have just finished working on an expansion  upgrade for my  coco 1
> which I designed and built in 1985 to be used as a ram drive.    It opens up
> a page sized window (256 bytes)  anywhere in memory dynamically.
> I haven't written any OS9 software for it but I plan to.   If  anybody is 
> interested
> I will try to take some pictures and post some schematics for it.
> 
> If interest is great enough I may consider making and selling the
> thing....
> 
> Roy
> 
> 
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