[Coco] any interest in an 8MB ram card for COCO3?

[Stephen Adolph]

Boisy,
I think I can make it work in the 512k upgrade position, or at least I
am giong to try.  To be honest I have not done the design right, so I
am still figuring it out.

But, what I really want, is to understand if Nitros-9 will support MMU
bits extention up to 8MB.

If not, then all I am doing is making a 2MB card.

Maybe this degenerates into me making myself a 512k card!

..Steve

On Fri, Apr 16, 2010 at 4:29 PM, Boisy G. Pitre <boisy at tee-boy.com> wrote:
>
> On Apr 16, 2010, at 1:47 PM, Stephen Adolph wrote:
>
>> If Nitros-9 won't be extended to address more memory then there is no
>> point I suppose.  The scope of what I am thinking of is a RAM card
>> only - no software, no application...just a RAM subsystem...Steve
>
> Stephen,
>
> Welding the card to the CoCo 3 motherboard would require additional logic for MMU bits, and would be much more than simply plugging it into the 512K memory board connectors.   I think you would find it much more useful (and easier) to interface it to the cartridge connector and position it as a huge RAM disk.
> --
> Boisy G. Pitre
> http://www.tee-boy.com/
>
>
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