[Coco] NitrOS-9 6309 L1 CocoSDC boots successfully on my Coco 1 F Board!

Sat Oct 31 08:53:50 EDT 2015

There is a number somewhere  on the mainboard that ends in a letter, B, 
C, D or E.  The "F" board did not have a letter on the end of the board 
number.  It sounds like you might have a D board, however you need 64k 
to run OS-9/NitrOS9.  Piggybacked memory was generally 32k.  You might 
have the rare 128k J&R Banker memory upgrade.
What are the numbers on the memory chips?
Bruce W.
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On 10/31/2015 08:28 AM, Kip Koon wrote:
> Hi Fellow NitrOS-9 CocoNuts!
>
> I tested the latest version of NitrOS-9 L1 early this morning on my 6309
> enhanced Coco 1 and it worked.  Who-Hoo!
>
> I don't know if this Coco 1 has a D Board in it or not.  This motherboard
> has a 4K and a 16K jumper near the SAM chip and 8 DRAM chips stacked on top
> the original 8 DRAM chips so it has a total of 16 DRAM chips along with
> several extra wires installed. It also has the big tin shield surrounding
> and covering all the major chips.  If anyone knows which version this is,
> please let me know.
>
> I finally have one of my Cocos running the NitrOS-9 6309 L1 v3.3.0 CocoSDC
> version.  I love it!  This first 6309 Coco 1 only has an RF output so I need
> a composite video upgrade.  I'd like to get a hold of the one with the Video
> and sound outputs on one rectangular PCB.  Since this particular Coco 1 has
> the original RF can with the 4 wires going into it from the PCB, maybe I can
> whip up something, but I would like a nice composite video adapter for it.
> If anybody has one they don't need, please let me know.
>
> Now I need to upgrade my Coco 1 with a Composite Video and sound output
> board to a 6309 cpu!  :)  Actually I'm using HD63C09EP chips so I'm
> wondering if there is any speed up circuits for the Coco 1.  Well that is
> about all the news I have for now.  Take care my friends.
>
>   
>
> Kip Koon
>
>   <mailto:computerdoc at sc.rr.com> computerdoc at sc.rr.com
>
>   <http://www.cocopedia.com/wiki/index.php/Kip_Koon>
> http://www.cocopedia.com/wiki/index.php/Kip_Koon
>
>   
>
>   
>
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