MacViking card found in a SE

[olivercampion]

I also bought an SE with same card. I wish I had a Moniterm Monitor.

Nice! Did you see I found the driver? I posted it on this thread. Can you see if it works for your card?

 

[Chardonneret]

I’ll have a look when I’m less busy. Thank you very much for the hint.

 

[Chardonneret]

OK, I instalked the viking card and the driver. It appeared with a question mark during boot (probably because no monitor was connected to the card) and then I could see it in tge control panels. Having something else to do, forgot to double click on it. Go figure…

 

[Chardonneret]

Oopsie… Same player shoots again

 

[franklyn]

... there are Motorola ECL chips on the card and a 110Mhz quartz so I think it is a ECL Graphiccard and you need a ECL monitor for it or try a ECL to VGA Converter made for the Atari TT computer ...

Atari-TT ECL zu VGA Adapter - Inventronik

Video Adapter zum Anschluss moderner TFT-Bildschirme an den Atari TT

shop.inventronik.de

GitHub - tenox7/tenoxvga: Atari TT High Resolution Mode on VGA Monitor

Atari TT High Resolution Mode on VGA Monitor. Contribute to tenox7/tenoxvga development by creating an account on GitHub.

github.com

The Atari TT has a 128Mhz Pixelclock but I use it also for a Viking Atari Mega ST Card with 110Mhz

 

[Chardonneret]

Viking card connector is 9 pin male.

 

[franklyn]

Yes but is it not a problem, you can build a 9pin to 15pin HD Adapter. The Viking Atari Mega ST Video ECL card need -9 Volt Power from the ECL Monitor to feed. I believe it's the same with the Macintosh ECL graphics card.

Video ECL Port are: ECL + / ECL + GND / ECL - / ECL - GND / H-Sync / V-sync / Sync GND / - 9 Voltage

Look at the Motorola datasheet from the ECL Chips. The need +/- 5V to work. Measure whether the negative voltage comes from the computer power supply or via the video socket and the voltage regulator with the black heatsink onto the graphics card.

 

[Chardonneret]

Thank you very much

 

[trag]

Welcome to the dawn of desktop publishing where pixels were king, even in single bit/black-n-white. Think of these as the high end GPUs of the day.

@trag can you hop in and detail testing for TTL output and then converting it to analog?

For some reason I didn't get the notification until today. But it looks like it's been covered, and while I appreciate the faith in my abilities, I don't actually know how to convert TTL to VGA.