Xconfig for ATI Xpression Mach64 VLB 2mb

Xconfig for ATI Xpression Mach64 VLB 2mb

Post by Nar » Wed, 10 Jan 1996 04:00:00



Superprobe returns:
        Chipset: ATI 88800GX
        Memory: 2048 Kbytes
        RAMDAC: AT&T 20c498/21c498 15/16/24-bit DAC w/pixel-mux
                (with 6-bit wide lookup tables (or in 6-bitmode))
                (progammable for 6/8-bit wide lookup tables)
        Attached graphics coprocessor:
                Chipset: ATI Mach64
                Memory:  2048 Kbytes

The install program for DOS resturns:
        Upgrade Module P/N:     Unavailable
        Controller Type:        VLB ATI88800GX
        Controller Revision:    0
        Base I/O Address:       2ECh
        Video BIOS Version:     1.21, 1995/5/8
        Video BIOS P/N:         113-27807-100
        VGA Functionality:      Enabled
        Video Memory:           2Mb - DRAM
        VGA Memory Boundary:    Shared
        Monitor Type:           Custom
        Power-Up Video Mode:    VGA (CV80) Color pri.
        DAC Type:               CH8398

        Installed modes:        640x480 59Hz N.I. (max bpp = 32)
                                800x600 56Hz N.I. (max bpp = 32)
                                800x600 72Hz N.I. (max bpp = 24)
                                1024x768 56Hz N.I. (max bpp = 16)
                                640x400 70Hz N.I. (max bpp = 32)

Monitor i have:
        Type:                   Viewsonic 6e
        Video Bandwidth:        65Mhz
        Mode    System  Graphic Polarity        Hor. Freq.      Ver. Freq.
        Mode 1  VGA     640x350 Hor + Ver -     31.47 Khz       70.08 Hz
        Mode 2  VGA     640x400 Hor - Ver +     31.47 Khz       70.08 Hz
        Mode 3  VGA     640x480 Hor - Ver -     31.47 Khz       59.94 Hz
        Mode 1  SVGA    800x600                 35.16 Khz       56.25 Hz
        Mode 3  SVGA    800x600                 48.09 Khz       72 Hz
        Mode 1  8514/A  1024x768 Interlaced     35.52 Khz       87 Hz
        Mode 1  UVGA    1024x768                48.363 Khz      60 Hz

X -showconfig returns:
XFree86 Version 3.1.2 / X Window System
(protocol Version 11, revision 0, vendor release 6000)
Operating System: Linux
Configured drivers:
  Mach64: accelerated server for ATI Mach64 graphics adaptors (Patchlevel 0)

I can get this whole thing to work fine under the SVGA server, but it is
only in 8-bit mode and I want to get more colors.  If anyone has a config
for this type of setup or can create one it would be much appreciated by
me and many others.

                                        Thanks.

 
 
 

1. ATI 2MB VLB Xpression gives me gray

I have an ATI Graphics Xpression for the VLB bus with 2MB of DRAM.
startx -- -bpp 16   gives the following info:

  Configured drivers:
    Mach64: accelerated server for ATI Mach64 graphics adaptors (Patchlevel 2)
  Mach64: card type: VESA LocalBus
  (**) Mach64: Clock type: ATI18818-1
  (**) Mach64: Number of Clocks: 32
  (--) Mach64: Maximum allowed dot-clock: 135.000 MHz
  (--) Mach64: videoram: 2048k
  (--) Mach64: Using hardware cursor
  (--) Mach64: Using 4 MB aperture
  (--) Mach64: Ramdac is STG1702
  (**) Mach64: Color weight: 565
  (--) Mach64: Aperture mapped to 0x2000000

I've read every Mach64 post in this group for the last several weeks,
as well as the README.Mach64 doc. It seems to work OK just using "startx",
but then I only have 256 colors at 1024x768, instead of 65k. Here's what
I've tried:

1. moved memory aperture to 32MB with DOS "install apmap" and added
   the   Membase 0x2000000   line to XF86Config
2. put the following clock lines in the "Device" section:
        Clocks  50.35  56.64  63.00  72.00  40.00  44.90  49.50  50.00
        Clocks   0.00 110.00 126.00 135.00   0.00  80.00  75.00  65.00
        Clocks  25.18  28.32  31.50  36.00  20.00  22.45  24.75  25.00
        Clocks   0.00  55.00  63.00  67.50   0.00  40.00  37.50  32.50
3. tried   Option "dac_8_bit"
4. tried   Option "no_block_write"
5. stuck in the line  VideoRam    2048

When I try startx with -bpp 16, it fills the window top-to-bottom with
the lo-res black and white background, then comes back and fills it in
again with a hi-res gray background. Running "xwininfo" tells me that
I have a 16-bit truecolor window. But the screen is all gray, the olwm
menus don't have shadows so you can't see what you're doing, and trying
to display a picture with xv results in a mostly blue image in the window,
although I can tell it's the correct picture by the visible color edges
in the picture. Also, I'm running 70 (or 72?) Hz at 1024x768. I've
also tried -bpp 32 at 640x480 with similar results.

I've spent hours and hours without success, and would appreciate any
assistance or XF86Config/Xconfig files. I will email my setup files to
anyone who might be able to help rather than make a super long post.

thanks, clint

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