CompuServe Thread

#Matrox Impression

9 messages in this thread
#77104From: Pavel KorenskyJan 18, 1994 2:37 PM
Hello John, thank you for your help. I just downloaded some infos from MATROX area here on CIS and seems that the MGA Impression 3MB/2MB Z-buff ISA will be the best for all my needs. Thank you for your help PavelK
#77264From: John TissavaryJan 19, 1994 1:10 AM
Pavel, have you heard about the Impression PRO? It will support higher res (1280×1024 @ 24bit) because it's got more memory. It is only a few hundred dollars more, and probably worth it if you've got the $$$. I love my MGA, but I don't use it for 3D Studio right now. When the new drivers come in (one or two months) I will, though. I have a network, and use one station for 3DS, and the other for Windows apps like Fractal Painter, Photostyler, etc… and AutoCad. That's the station with the MGA in it. Then I just use a switch box so I've got both computers on the same monitor and keyboard, and can flip back and forth between Windows or Acad and 3DS without worry. And file transfer is taken care of by Lantastic. It's really an ideal setup if you've got more than one computer.
#77281From: Dave Byrnes [AEC TM]Jan 19, 1994 2:56 AM
John – what are the new drivers you speak of? I bought a VLBus 3Mb Impression last fall, and while it's great for most Windows stuff, it's a disappointment as far as AutoCAD goes, for both Windows and DOS versions–it's much slower than my last card, a Rasterex Lazer.
#77286From: John TissavaryJan 19, 1994 3:42 AM
I've heard that he MGA drivers are not as fast as some, I'm speaking of the 3D real-time viewing capabilities, which are of utmost importance to me. If it weren't for that I'd probably only open Acad once a month or less. Also, Matrox updated the drivers, mainly for speed, and they have been available on their BBS since last fall. I don't know if you have the latest version. There may even be another update, I haven't checked. I find the drivers quite fast, perhaps you've got an older version. The MGA is my first high-end CAD card, so I don't have much to compare it with, anyway. I use Acad only for 3D modeling, and then only as an extension of my 3D Studio needs, so speed is important, but 3D is more important. John Tissavary (La Luna cie)
#77327From: Dave Byrnes [AEC TM]Jan 19, 1994 10:41 AM
John – I have the second issue of drivers, 1.1 I think. I find the Dynaview driver slow in regular AutoCAD when changing to a flip screen and when clearing away its own dialogue boxes. Also, entity colours change when you copy things around the drawing; a redraw doesn't cure the problem–you have to erase and oops to fix it. Also, there are artifacts left when you erase objects that take a redraw to clear. Also, Dynaview kills some zoom macros I have in my menus. Right now I'm working on adding my *good* AutoCAD board, a Rasterex Lazer to the soup… but that would mean 3 video boards (both the other two require a separate VGA) so I don't know if it will work.
#77495From: John TissavaryJan 19, 1994 10:01 PM
I have not experienced any of the problems you state. Perhaps you have other conflicts at work, or a bad version of the drivers. BTW, I just downloaded version 1.11 from their BBS last night. I'm going to try it out in the next day or two (when I get time) and I'll leave a message about what I think. John Tissavary (La Luna cie)
#77718From: Dave Byrnes [AEC TM]Jan 20, 1994 1:49 PM
John – Maybe I'll DL the new drivers and see if they're any better. Dave
#77811From: John TissavaryJan 20, 1994 8:02 PM
If they are, please let me know. You are more knowledgeable and critical, and have more reference to base your opinions on, and I am interested in the MGA drivers' performance in all areas.
#77846From: Dave Byrnes [AEC TM]Jan 20, 1994 9:54 PM
John – will do! By the way, I'm using Rasterex's AutoIcon for Windows as the display driver for ACADWIN with the Matrox, and it's great! Dave