[Coco] Unknown Coco 2 - Socketed

[Bruce W. Calkins]

If I remember correctly:

The last B version generally had eight 16 pin solder pads for 1x16/64 bit 
chips, 2 populated 4x16/64 bit chip sockets or soldered in 4x64k chips and 
two white connectors for a 64 bit satellite board.  (Of which I have/had two 
copies.)  The 4x memory chips used a faster refresh, so the SAM was upgraded 
as well as the VDG.

The next to last A version had 2 populated 4x16/64 bit chip sockets and two 
white connectors for a 64 bit satellite board.  That would have required the 
upgraded SAM, but I'm having doubts about my recollection there.

All earlier CoCo 2 boards had eight 16 pin sockets or soldered in memory 
chips.  Most of the 16k boards had sockets and most of the factory 64k 
boards were soldered.



 Bruce W.



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----- Original Message ----- 

From: "Kip Koon"

> Hi Guys!
>
> I hope everyone is doing well.
>
> I have a Coco 2 with a "Radio Shack TRS-80 64K Color Computer 2" label
> centered on top and absolutely no label on the bottom of the unit.  None!
>
> All the ICs on the rectangular motherboard are socketed.  Since my phone 
> is
> out of juice just now I can't put any pictures in my dropbox to show you
> guys.
>
> How many versions of the above mentioned 64K Coco 2 had a rectangular
> motherboard with all ICs socketed?  I'd like to id this version of the 
> Coco
> 2 if possible.
>
> Kip