[Coco] Disto SC add-ons

[Gene Heskett]

On Tuesday 30 December 2008, Benoit Bleau wrote:

>Roger Taylor wrote:

>> Does anyone know how in the heck the addon with the video chip is

>> supposed to output video or how it works?  The board also has a clock

>> chip which seems to be running even though the board is old.. you can

>> PEEK from BASIC and see the clock registers changing.  I do have the

>> register specs on the clock.  The video chip is a CRT9128. There's an

>> 11mhz crystal, HM6116LP-2 chip, 13x2 header, and 2x2 header.  I see no

>> other ID marks on the board other than the word "Disto" and two color

>> stickers on the back labeled "M" and "T".

>>

>> I see nothing in the Disto SC docs explaining the details of this

>> board, just a mention that it's one of the add-ons.

>

>if I recall, I had one of these boards 15 years ago?  and it worked only

>with OS9. It required a driver to be installed.

>I returned it to CRC computers, because it had a horrible wobble in the

>image.


Humm, were you purchance operating the monitor sitting adjacent to the regular 
color monitor?  The leakage of magnetic fields from the deflection yoke of 
the color monitor will make a Maggy PC-80 13" wobble very noticeably.  I put 
a sheet of steel between them which helped quite a bit.


>-Benoit

>

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-- 
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