Wanted - Canopus Pure 3D Pass Through

[Smack2k]

Does anyone have or know where to get the needed passthrough cable for the Canopus Pure 3D Voodoo1 Card? In search of one as they are not the normal Pass Through connector as most Voodoo Cards....

 

[Plasma]

Most Voodoo cards didn't have internal passthrough, only SLI. The Canopus cable ("Witchdoctor") is just a 2x7 IDC ribbon cable.

 

[Smack2k]

No, I am talking about the cable that connects from the VGA out of the 2D Card into the VGA in of the Canopus Card. Then the monitor gets plugged into the VGA out of the Voodoo Card. Other Voodoo Cards have two VGA style ports on them (an in and and out) but the Canopus VGA in is more of a PS/2 / S-Video style input.

 

[GiGaBiTe]

I have a Canopus Pure3D II (Voodoo2) with this connector and cable.

The end going into the Canopus card is basically a 9 pin S-Video connector. You can buy a cable like this:

https://www.ebay.com/itm/152516909825

And chop off the other end to wire to a VGA cable. The trouble would be getting a pinout for it to route the wires. You'd also want to make the cable as short as possible and keep the splices as short as possible to avoid adding noise to the line.

 

[Smack2k]

Here is the pinout....the VGA in part pins is the part I am most concerned with to get it to match...the top 3 pins have 2 of the pins offset from the other...

http://www.3dfxzone.it/enboard/topic.asp?TOPIC_ID=18659

 

[GiGaBiTe]

Oh that looks easy, it's just passing through the R, G and B signals along with the sync signals.

I metered out a few pins on my passthrough cable and the diagram seems to be correct. Though it's weird that it's leaving all of those ground pins floating, only the shield is grounded and I think the blue ground.

 

[Smack2k]

But would the cable you linked to work? I ask due to the offset pins on the top row of the Canopus, what I guess is a Type B Mini Din?

 

[Syclops]

How about something like this?

https://www.ebay.com/itm/15-Pin-VGA...274548?hash=item3626a05074:g:BEMAAOSw0A9aG0XU

 

[Syclops]

Is this the Cable you are looking for?

 

[Smack2k]

No the first one as it looks to only be a 4 Pin cable and I know the S-VIdeo cable pinout isnt right.

The second one looks good but would need taken apart and wired different from what I read in a thread that had that same picture in it.....

Someone on another board mentioned the input of a Model 2 Sega Genesis having the same pinouts and offset top row of pins as the Canopus. Looking into that as well...

 

[GiGaBiTe]

Is this the Cable you are looking for?

View attachment 42435

That cable has the correct mini DIN connector on it, the question is if it's wired properly.

The ends look exactly like mine, but mine is considerably longer and is black.

 

[Smack2k]

I have a mini din 9 to composite cable. It fits the VGA in of the canopus card perfect and snug. Now to hack a VGA cable and put them together and see how it goes!!

 

[GiGaBiTe]

Make sure you get a VGA cable which passes all pins through the cable. Modern cheap VGA cables often tie several of the grounds together or completely omit connections.

There's also the issue of shielding, make sure you use a properly shielded cable instead of one of the pencil thin ones to avoid image degradation.

 

[Smack2k]

I have several larger VGA Cables I can use for that....just hope they have all the wires when I cut the first one open...

I had to completely cut the jacket off the Mini-Din 9 Connector to get to it....so now I have the connector, but no jacket....anything I could use for a good, safe jacket?

I also ordered a couple Mini Din 9 Pin connector kits in case this one doesnt go much further without the jacket. Plus, I am going to practice the connections on this first one as its a lot of close soldering to the pins and my soldering is not the best yet....