[Coco] Tandy Assembly Exhibit: CocoMEM

Zippster zippster278 at gmail.com
Fri Oct 6 11:50:36 EDT 2017


Looks really great Jim.  I saw the Facebook pics, very nice work.   :)

8MB makes the most sense to me too.  But 4MB at the least given you’ve gone this far.

> All that said, I'll probably design a 64MB board or two, just for me :-) Just for bragging rights

Do it man.  Do it because you can.  :D

- Ed


> On Oct 6, 2017, at 9:59 AM, RETRO Innovations <go4retro at go4retro.com> wrote:

> Concerning Gene's question that you reiterate:
> 
> 512kB = $3.41 base cost (@ 100 unit prices)
> 
> 1MB = $3.66 base cost
> 
> 2MB = $11.74 base cost (yep, I know...).  Better to do 1 x 1MB @ 7.32, but still too expensive
> 
> 4MB = $4.63 base cost
> 
> 8MB= $5.97 base cost
> 
> 
> So, from a strictly financial perspective, there is little advantage to going below 8MB, and no value in doing 2M. You can save a bit and not affect the PCB footprint by designing for 4MB/8MB, as they use the same IC footprint, so I guess I could support those two sizes.  But, there's a cost to handling two variations of the board, and extra software to test, so I'd prefer not doing that.
> 
> I admit when I asked the question initially, I had not consulted the sales figures, but the refined question now would be:
> 
> You're getting 4 or 8MB.  Does anyone see value in doing more?  Paul planned on 16MB, so at least was considering things (maybe not realistic things, but...)
> 
> All that said, I'll probably design a 64MB board or two, just for me :-) Just for bragging rights
> 
> Jim
> 
> 
> 
> -- 
> RETRO Innovations, Contemporary Gear for Classic Systems



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