[rescue] Recommended 13w3 to VGA adapter (Dave McGuire)

[Ethan Hawke]

Yes, I seemed to have overstepped, honestly I only checked the CG6 and 
it was SoG/CSYNC, and just assumed it was similar among the others such 
as the CG3 as they all looked identical on my monitors, indeed after 
checking the schematics (which I honestly should have done first) the 
CG3 is separate VSYNC/HSYNC and doesn't have CSYNC or SoG at all.

I'm not sure for the FFB, but the service manual for the U1/U2 indicate 
HSYNC/VSYNC, but I haven't checked.

Sorry about the error Dave, my bad.

Cheers,
Ethan

On 2/08/2022 10:29 am, Dave McGuire wrote:
> While I've never looked at the green signal with an oscilloscope, but 
> I can tell you that there are in fact hsync and vsync signals on the 
> pins of the DB13W3s, and using cables that don't have the pins 
> populated cause the monitors to fail to sync up.
>
>            -Dave
>
> On 8/1/22 20:04, Ethan Hawke wrote:
>> All the main Sun framebuffers (cg3, cg6, ffb) are all sync-on-green. 
>> And SoG still seems to have common support today, but I haven't 
>> extensively tested different monitors.
>>
>> Cheers,
>> Ethan
>>
>> "Dave McGuire" mcguire at neurotica.com b 2 August 2022 6:03 AM
>>> On 8/1/22 15:15, Ron Pool wrote:
>>>> I've used these with a SPARCstation 2, SS IPC, and SS 20 and 
>>>> various older 4:3 and widescreen LCD monitors with VGA inputs:
>>>>
>>>> www.ebay.com/itm/280752640620
>>>>
>>>> I like them because instead of being an adapter that ends up adding 
>>>> length to the rigid bits that plug in to and through gravity and 
>>>> bumping this add stress to video connectors, it's instead a 
>>>> complete cable with normal size plugs on the ends.
>>>>
>>>> I think I've been mostly lucky with these monitors just working 
>>>> with my various SPARCstations. But I did pick out those monitors 
>>>> because web searches made me pretty confident all the used LCD 
>>>> displays I buy support sync on green, which I somewhere picked up 
>>>> is a thing that is needed for monitors that connect to 
>>>> SPARCstations. I don't know the sync on green is really a 
>>>> requirement, but I've had no problems at all with the few 
>>>> sync-on-green capable VGA LCD monitors that I've used on SPARCstations
>>>
>>> Suns typically don't do sync on green; they have separate sync pins
>>> on the DB13W3 connector. Many other workstation-class machines do
>>> sync-on-green, though.
>>>
>>> -Dave
>>>
>>>
>
>