[Coco] CoCo2 Composite Video Mod

[Daniel Campos]

For any "good" composite output on the CoCo1/2 you will need to make the
circuit described on the 6847 datasheet on page 12:

http://people.ece.cornell.edu/land/courses/ece4760/ideas/mc6847.pdf


If you don't mind not having artifact colors, you can also do an S-Video
output for your CoCo2. The image quality is excelent! I just have done on
my own CoCo2 this last weekend. Pictures on the link bellow:

https://picasaweb.google.com/109345699838454178536/TRS80ColorComputer2#5944291386400575762

Daniel

2013/11/11 Michael Graham <mkgraham at gmx.com>

> See, I've tried doing the CoCo 1 style mods to the chip inside the RF can
> in the CoCo 2, but didn't get any usable output.  I wish someone would just
> publish a composite video mod that was verified to work on the CoCo 2, but
> I haven't been able to find one anywhere.
>
> --Michael
>
> On 11/11/2013 06:10 AM, Bruce W. Calkins wrote:
>
>> A: the chip numbers are different in a CoCo 2.
>> B: the MC1372 chip in the CoCo 2 is inside the RF modulator "can" which
>> might be soldered.
>> Bruce W.
>> =========================
>>
>>
>> ----- Original Message ----- From: "Gabriel Holland"
>>
>> I have been trying to mod a 64k CoCo2 to color composite out. I have
>> tried 2 different mods and rebuilt one of them several times but all I
>> get is a black screen. I have noticed that the mods usually are listed
>> as CoCo1 but have read that they should work on a 2. Has anyone here
>> successfully installed color composite on a CoCo 2? If so which circuit
>> did you use?
>>
>>
>> Here is one of the pages I used. It has 3 Composite mods and I built the
>> first 2 (Fig 1 and "the Other Bob").
>> http://sparksandflames.com/g35.html
>>
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