[Coco] Re: Color Computer 3 prototype
    jdaggett at gate.net 
    jdaggett at gate.net
       
    Fri Jan 21 19:40:19 EST 2005
    
    
  
Allen
What would be most benificial next is to remove some of the ICs 
with the red dots to revel the part number that has been obscured. 
Also the ICs that have reference # on them. Critical ones come to 
mind is U55, U25 and U41. Also the two next to the EPROM 
(CGROM). I believe those to be N82S series of TTL prom smade by 
Philips and several other companies in the 80's. 
I think once we have a complete knowledge of the part numbers on 
all the ICs, some brainstorming can start to derive the individual ICs 
into groups of ICs to do specific functions. We could be able to 
derive what ICs form the 12 bit timer. The address generator for the 
video. 
I think we first need to estblish a list with all the IC part numbers.
just my thoughts
james
On 21 Jan 2005 at 13:50, alsplace at pobox.com wrote:
Date sent:      	Fri, 21 Jan 2005 13:50:00 -0800
From:           	<alsplace at pobox.com>
Subject:        	Re: [Coco] Re: Color Computer 3 prototype
To:             	coco at maltedmedia.com
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> Nick wrote:
> >This is truly an amazing event! It's like finding a lost
> >civilisation! 
>   :)
> 
> Okay, so what can I do to help further the process?  More photos? 
> Better photos?
> 
>      -- Allen
> 
> 
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