[Coco] Help on Breaking the 64KB Barrier on the Coco 2
Tom Seagrove
tjseagrove at writeme.com
Thu Jul 19 13:53:52 EDT 2012
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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