CyberVision64 GFX card question

[patrik]

@melott:

Yeah, I agree with Lemmink. The 2MB version of the card has empty sockets and the 4MB version has the sockets filled. This is the case with my CyberVision64 and all other CyberVision64s I have heard of. It does sound like you already have a 4MB card.


/Patrik

[patrik]

@mellot:

The size you found when searching for the chip-numbers doesnt happen to be of the size 256Kx16bits which equals to 512KiloByte?

This should be the case as the width of the Trio64 datapath is 64-bit and for the minimum 2MB configuration with 4 chips, the chips would have to have a 16-bit wide datapath each to give a 64-bit width when combined (4 * 16 = 64).


/Patrik

[patrik]

@artman, duesi:

Both the CV64 and CV64/3D has a max pixelclock of 50MHz at 24-bit which is not enough to be able to create a non-interlaced 1024x768 screenmode. Even a 50Hz 1024x768 screen requires a ~56MHz pixelclock. Also, those cards doesn't even manage the specified 50MHz pixelclock without distortions in the image, you will have to settle for a few MHz lower - the highest usable resolution at 24-bit would be 800x600 at about 70Hz.

I would definately recommend not using 24-bit if you want a snappy feeling as these cards give the overly best acceleration at 8-bit.


/Patrik