[Coco] 26-3127B <-> 26-3134B Coco 2Bs

[Bruce W. Calkins]

----- Original Message ----- 
From: "Kip Koon"

> Hi Coco 2B Hardware Gurus!
>
> This may be old news to some of you so those of you who don't know, I have
> recently (within the last few days) discovered that the memory area of the
> 26-3134B Coco 2B which I have looks Identical to the memory area of the
> 26-2127B Coco 2B except for the following differences.
>
> I have yet to check my 26-3134B motherboard yet, but if I remember
> correctly, my memory is implemented with two 4464 chips and has a two 12 
> pin
> female headers, one near each chip.  Whereas MarKO's 26-3127B's memory is
> implemented with 8 - 4164s.  Where he has memory, my motherboard is blank
> and where I have memory, his motherboard is blank!  Other than that
> difference, are these two Coco 2B motherboards identical?  Is the same
> motherboard being used for both model numbers of Coco 2Bs?  They both were
> made in Korea, so this seems possible.  If that is the case, then Why?
> Memory chip supply problems?  Why two catalog numbers?  Inquiring minds 
> want
> to know!  Scooby-Doo, Where are you ?
>
> Kip Koon
>
===========================

This is covered on page 77 of the book "Tandy's Little Wonder" by F. G. 
Swygert with one minor exception.  I have in stock 2 of the somewhat rare 
plug-in 64k upgrade boards.
Bruce W. 


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