[Coco] MC6847 ( Motorola DS9823)

[Luis Antoniosi (CoCoDemus)]

my coco2b has a XC80652P on it.

On Thu, Mar 21, 2013 at 10:24 PM, Bill Pierce <ooogalapasooo at aol.com> wrote:

>
> Since the real search is for the datasheet for the MC6847T1, I would
> assume the service manual needed would have to be from (?)1984 or 1985(?)
> as that chip was added to the last incarnation of the Coco 2, the Color
> Computer 2b.
> Also, I was looking at the article in the Rainbow on the Coco 2b and it
> states that the MC6847T1 was also known as the XC80652P (pre-production
> name).
>  And another thing I didn't know was that the SN74LOS783 (MC6883 SAM chip)
> was replaced with the SN74LS785 (backwards compatable) to faciliate the new
> VDG chip. I wonder if it had any "hidden" features that the Coco wasn't
> using.
>
> Bill P
>
> Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Bill Pierce
> ooogalapasooo at aol.com
>
>
>
>
> -----Original Message-----
> From: Chester A Patterson <chester6809 at gmail.com>
> To: 'CoCoList for Color Computer Enthusiasts' <coco at maltedmedia.com>
> Sent: Thu, Mar 21, 2013 10:11 pm
> Subject: Re: [Coco] MC6847 ( Motorola DS9823)
>
>
> This is probably old beaten stuff but here goes.
>
> Looking again in the CC2 Service Manual (1983) it says the MC6847 (Motorola
> DS9823) so I Googled DS9823 and found this:
>
>
> http://www.colorcomputerarchive.com/coco/Documents/Microprocessors/MC6809/Mo
> torola%20MC6847%20MOS%20Video%20Display%20Generator%20Datasheet.pdf
>
>
>
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