[Coco] Coco 1 displaying in B&W

Daniel Campos daniel.campus at gmail.com
Sun Apr 19 12:16:18 EDT 2015


Same as me, probably some monitor difference, because today I only use 
LCDs.
The only one that truly works is the one described on the 6847 
datasheet, page 12.

Daniel

On 19/04/2015 13:11, Jamie Reinsborough wrote:
> Somehow I was never successful in getting the "Color Monitor Driver" in
> this link to work.  It seems so simple, not sure why I couldn't get it to
> go. I'll have to give it another try sometime...
>
> Jamie
>
> On Sunday, April 19, 2015, Al Hartman <alhartman6 at optonline.net> wrote:
>
>> There are several Composite output mods for the Coco. Eventually, someone
>> will make up kits and have them available.
>>
>> In the meantime, they are not too hard to make on a piece of perfboard.
>>
>> http://www.cocopedia.com/wiki/index.php/CoCo-1_composite_video
>>
>> -[ Al ]-
>>
>> -----Original Message----- From: Steve Batson
>>
>> Vincent,
>>
>> Certainly does not sound like the TV, though trying on another TV just to
>> make certain would not be a bad idea if you haven't tried that already. Is
>> the output to screen clear and fine other than not having color? This is
>> really sounding like a good possibility that something is wrong inside the
>> RF output circuit to me. I'd still reseat chips as recommended by others.
>> Heck, I'd probably reset every socketed component. If none of that works
>> and the system still won't do color, it might be worth trying to do a
>> Composite Video Mod and bypass the RF circuit. I don't know if the mods
>> currently being discussed on the list will work with the CoCo 1 or not.
>> Not sure how much $ or time you want to put into this, but a Composite Mod
>> would help isolate the issue and yield better quality video in either case.
>> Not sure what else to suggest myself, there's a lot of people on the list
>> far more experienced with Video than myself, so hopefully enough
>> suggestions will come to help you nail it down.
>>
>>
>> On Apr 19, 2015, at 5:11 AM, Vincent Tran <vincent at backhandsandwich.com>
>> wrote:
>>
>>   Hi Salvador - I've tested that TV with a Genesis and NES via coax and it
>>> worked fine.
>>>
>>> Sent from my iPhone
>>>
>>>   On Apr 19, 2015, at 12:52 AM, Salvador Garcia <
>>>> ssalvadorgarcia at netscape.net> wrote:
>>>>
>>>>
>>>> Vincent, have you tested that TV with some other AV device to verify
>>>> that the TV is working ok? Salvador
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: Daniel Campos <daniel.campus at gmail.com>
>>>> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>>>> Sent: Sat, Apr 18, 2015 1:58 pm
>>>> Subject: Re: [Coco] Coco 1 displaying in B&W
>>>>
>>>>
>>>> Make a fine tunning on your TV/Monitor and see if the colors shows up.
>>>> I imagine
>>>> that you are using an NTSC compatible TV right ?
>>>>
>>>> Daniel
>>>>
>>>> On 18/04/2015 15:40,
>>>> Vincent Tran wrote:
>>>>
>>>>> Hi -- Just got back from Radio Shack with a RCA male to
>>>>>
>>>> RCA female and a
>>>>
>>>>> coax male to RCA Male coupler.  I plugged it up to the Coco 1
>>>>>
>>>> and the video
>>>>
>>>>> signal was definitely a lot better - there was no static like
>>>>>
>>>> before when I
>>>>
>>>>> was using the Nintendo RF adapter.  Unfortunately, I still own a
>>>>>
>>>> TRS-80
>>>>
>>>>> Black&White Computer.  Everything is still in B&W.  I tried both
>>>>>
>>>> channels 3
>>>>
>>>>> & 4. Any other suggestions would greatly be appreciated.
>>>>>
>>>> Thanks,
>>>>
>>>>> -Vincent
>>>>>
>>>>
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