Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!caen!news.cs.indiana.edu!ux1.cso.uiuc.edu!phil From: phil@ux1.cso.uiuc.edu (Phil Howard KA9WGN) Newsgroups: comp.sys.ibm.pc.hardware Subject: Re: about Diamond Speedstart VGA (Gateway 2000) Message-ID: <1991Feb2.204847.20439@ux1.cso.uiuc.edu> Date: 2 Feb 91 20:48:47 GMT References: <1991Feb1.222632.22777@ux1.cso.uiuc.edu> <2213@njitgw.njit.edu> Organization: University of Illinois at Urbana Lines: 27 cd5340@mars.njit.edu (Charlap) writes: >Since there is no real PC standard for resolutions beyond 640x480x16, any >sVGA card will be a risk. ATI comes with drivers to adapt it to the VESA >standard, which is trying to become a standard. Of course, IBM has their >own standard (8514 and XGA) which isn't compatible with anything other >than the new PS/2 computers they were meant to work with. Where does one find out the technical details to be able to program the various SVGA cards at the register level for modes not provided on the VBIOS or drivers? I have a book that tells about such programming and includes enough details of register level to do VGA programming that way. However it does not mention any differences between different board types. I have some things I want to do with VGA programming that require direct access to the video memory without going through any subroutine or interrupt calls to do the screen updates. I could settle for letting VBIOS set up the modes, but I still need the video RAM access level. And I still need SOME idea of how well the Diamond Speedstar VGA works since I have no real references to draw upon. -- --Phil Howard, KA9WGN-- | Individual CHOICE is fundamental to a free society | no matter what the particular issue is all about.