[Coco] Coco3 and coco2 peritel on Samsung 730MW

[Luis Antoniosi (CoCoDemus)]

But maybe inside the SCART connector there is plenty of room to put a
7805 and a 74LS02 SOIC and you do everything inside it as you must be
supplying the 12V to it.

I use inside the coco3 as I use a Sony PVM as CRT monitor too.

On Mon, Dec 23, 2013 at 10:35 AM, Luis Antoniosi (CoCoDemus)
<retrocanada76 at gmail.com> wrote:
> The 74LS02 you install inside the coco3:
>
> https://pbs.twimg.com/media/BQ23f_tCEAAUonA.jpg:large
>
> IC15 has the two signals you need: vsync and hsync. Then I use the pin
> 10 to drive the Cysnc. But you must disconnect this pin first.
> Although the specs says this pins is N/C in fact it's not. You need to
> lift the R62 and R61:
>
> http://www.victortrucco.com/Diversos/ConsertoCoco3/DSC02333.JPG
>
> I think this pin is used to the CM-8 monitor as KEY-ID or something.
>
>
>
>
> On Mon, Dec 23, 2013 at 10:22 AM, Steven Hirsch <snhirsch at gmail.com> wrote:
>> On Mon, 23 Dec 2013, Luis Antoniosi (CoCoDemus) wrote:
>>
>>> On Mon, Dec 23, 2013 at 9:44 AM, Steven Hirsch <snhirsch at gmail.com> wrote:
>>>>
>>>> Highway Model 100
>>>
>>>
>>> When building the scart cable you must  connect pin 8 (SWITCH - 12V)
>>> to pin to pin 16 (BLNK) using a 560 Ohm resistor. Like this one:
>>>
>>> http://members.optusnet.com.au/eviltim/gamescart/dcast.png
>>>
>>> But you need to ground pin 17 only (VGND).
>>
>>
>> Hmm.  I had to condition _two_ signals in order to get things cooperating:
>>
>> Pin 8 --> +12v for "AV" mode (external input)
>>
>> Pin 16 --> 1-3v for RGB signaling
>>
>> In particular, pin 16 selects composite video when it sees 0-0.4v
>>
>> Steve
>>
>>
>> --
>>
>>
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>
>
>
> --
> Long live the CoCo



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Long live the CoCo