[Coco] PAL Coco 1/2 schematics/timings

[Bob Devries]

Hi Mark,

If I remember correctly, the earliest PAL Coco1 had a daughter board 
retro-fitted which inserted the (blank) lines at the top(?) and bottom of 
the screen. Later versions had this as part of the main board.
I'll have a dig around to see if I can find my manuals and schematics.

Regards, Bob Devries

----- Original Message ----- 
From: "Mark McDougall" <msmcdoug at iinet.net.au>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Friday, September 10, 2010 8:35 AM
Subject: [Coco] PAL Coco 1/2 schematics/timings



> Hi,

>

> Again, apologies if this stuff is readily available but I simply can't 

> find any technical information on the PAL Coco 1/2. :(

>

> Specifically, I'm looking for timing information - master clock 

> frequencies and clocks for SAM & 6847. I'm unclear as to how they got PAL 

> out of the above-mentioned atm.

>

> TIA

> Regards,

>

> -- 

> |              Mark McDougall                | "Electrical Engineers do it

> |  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"

>

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