CompuServe Thread

#W32p vs. VIBCFG at 16.7M

6 messages in this thread
#93555From: Gregory LeVasseurMar 26, 1994 3:37 AM
Hi, I have 3D Studio and am using Vibrant's latest driver version 1.0.1.P5. My problem is that with my new ET4000/W32p based card (STB LightSpeed w/2 MB) I cannot get the 640x480x16.7M color mode to work properly. The problem is not with the card as I can get 24 bit color in Windows. My previous card was ET4000/W32 (without the "p") based and worked fine with your driver. Any ideas? Thanks Greg LeVasseur
#93657From: MARTIN G FOSTERMar 26, 1994 9:50 PM
Gregory, sounds like a driver problem to me. I hope Vibrant jumps in here. Try a lower colour mode.
#93997From: Mar 28, 1994 12:05 PM
Can you describe the problem? Is it not syncing? Are the colors wrong? Any information would help. We do not have an STB LightSpeed in house, so we'll try to get one to resolve the problem. The problem is probably that their BIOS is not properly setting up the RAMDAC (common problem), so we'll have to get a board in house and get a workaround up and running. (The W32p supports PCI!) Chuck Walbourn – Vibrant Graphics
#94017From: Gregory LeVasseurMar 28, 1994 1:43 PM
> Can you describe the problem? Is it not syncing? Are the colors wrong? Any > information would help. Chuck, Sorry. I guess I should have described the problem in more detail. It is a bit complicated. I suspect the problem is more with the LightSpeed than with your driver. Anyway, here goes: In the 640x480x16.7M mode the colors are all wrong. They are sometimes all blue, sometimes yellowish and greenish, and sometimes almost correct but dithered. The weird thing is that this problem occurs ONLY at a 60Hz refresh rate. When at 72Hz refresh rate the colors are fine. So, what am I complaining about? Well, it seems that this card has a problem at 640x480x16.7M at 72Hz…it doesn't fill the screen horizontally. Needless to say, I am also talking to STB about this but they say it has to do with the dot clock and they may not be able to fix it! So, for now, I am stuck with 60Hz for this mode. Interestingly enough though, there are no color problems when in _Windows_. Adobe Photoshop etc. are showing perfect 24 bit color at 640x480x16.7M at 60Hz refresh. It is only 3DS that is having a problem. I have several choices but none of them are ideal. Either the colors come out wrong and I view the output in Windows, OR I see the output on a distorted screen at 72Hz, OR I drop down to 16 bit color and put up with gradient colors (unacceptable, I want to see 24 bit color), OR I lose the LightSpeed card and go back to my old generic ET4000/W32 card which doesn't have this problem. With the last option, however, I lose my high resolution modes like 1280x1024x256. I am, therefore, hoping that you might have a quick fix for this problem. Greg LeVasseur P.S. This is a VLB not a PCI card.
#94519From: Mar 30, 1994 11:10 AM
We'll, we are trying to get one in house. Which version of the inline driver are you using ? Chuck Walbourn – Vibrant Graphics
#94523From: Gregory LeVasseurMar 30, 1994 11:39 AM
> We'll, we are trying to get one in house. Yeah, they're a little hard to get right now. They're _very_ popular. >Which version of the inline driver are you using ? 1.0.1.P6 Greg LeVasseur