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Voodoo 2 12mb in Powermac 6500?

macuserman

Well-known member
Yeah to run a second monitor on a 6500 you would need a different pci video card or I think I’ve seen in fact I think I have one an adapter that lets you add a second monitor port to the onboard graphics. But yeah the 3dfx card won’t let you add a second one.
 

Unknown_K

Well-known member
The point I was making is if you DON'T have the passthough cable you can connect onboard video to your current Mac (or whatever monitor) and connect the Voodoo 2 to a PC monitor. assuming you have the correct drivers and a game that uses a Voodoo video will appear on the PC monitor when connected straight to the Voodoo2 when the game starts (else it will be blank).

This way you can see if it works.
 

Daniël

Well-known member
Unless you have a video signal going in you get nothing coming out

That's not (entirely) how it works. It either lets video through from the passthrough, or its own video, not both. And its own video does not require the presence of passthrough video as a result.

Once the driver activates the card, it internally switches the video from the passthrough VGA to its own output. Meaning that if you used a secondary monitor for just the 3DFX card, that monitor would only show 3D video once the card kicks in, otherwise receiving no signal as it's effectively no longer connected to anything (as the passthrough port is left unpopulated). Some Voodoo cards did it with ICs, others with relays (which would audibly click once the video switched from 2D passthrough to internal 3D, or vice versa).
 

RadRacer203

Well-known member
That's not (entirely) how it works. It either lets video through from the passthrough, or its own video, not both. And its own video does not require the presence of passthrough video as a result.

Once the driver activates the card, it internally switches the video from the passthrough VGA to its own output. Meaning that if you used a secondary monitor for just the 3DFX card, that monitor would only show 3D video once the card kicks in, otherwise receiving no signal as it's effectively no longer connected to anything (as the passthrough port is left unpopulated). Some Voodoo cards did it with ICs, others with relays (which would audibly click once the video switched from 2D passthrough to internal 3D, or vice versa).
Well, you learn something new every day! I've never heard that before but good to know! Although I will be using the passthrough and one monitor for my setup
 
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