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

[jdaggett at gate.net]

Stephen

Three questions.

Which RAM chips do you have? 

Would the board be the same size the current 512K ram card is?

Which vendor of CPLDs do you have?

james

On 15 Apr 2010 at 14:33, Stephen Adolph wrote:

> Hi all,
> just a feeler here.
> 
> I happen to have a whole pile of static ram parts, 1 and 2MB each.
> I also have a whole pile of CPLDs lying around.
> Why not make those into something useful?
> Anyone interested in a ram card based on SRAM for the COCO3?
> 
> Features-
> * plug and play just like the others
> * no need for a new refresh circuit (static ram used!)
> * low power consumption, nice on the supply
> * scalable from 2MB to 4MB to 8MB, as you wish
> 
> Note:  2MB card would use 2 1MB srams, while the 8 MB part would use 4
> 2MB parts.
> 
> Price could be something like 80$ for 2 MB, 100 for 4 MB and 120 for 8 MB.
> 
> Anyways, let me know.  I have a second coco3 now, that will be the
> "target" for my own version.  I'll probably start thinking about the
> schematic and layout regardless of interest.  I'm I'm the only one
> interested, then I guess I pay myself.
> 
> (quick side note, it would be easy to make this card with some flash
> as well, don't know if that is of interest)
> 
> cheers, Steve
> 
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