Diamond Speedstar A50

Diamond Speedstar A50

Post by Jelle-Fro » Tue, 01 Dec 1998 04:00:00

Last week I upgraded from a 80486DX\100 system to a
brandnew AMD K6-333/3DNOW!-based machine. YES!

I have got some trouble getting the settings for my
graphics card right. My new K6 system has a
Diamond Speedstar A50 (AGP) with 8Mb RAM on board.

I downloaded the XSiS server from the SuSE site which
is supposed to support the SiS 6326 chipset.

I fiddled around with the settings in /etc/XF86Config
until I found some settings which gave me a reasonable

The only problem now is: I_t r_u_n_s l_i_k_e a d_o_g.

There is really not much noticeable difference in speed
between my old 486 system running X and my new machine
running X. While running Windows95 (I have a dual boot
machine) the difference in speed is dramatic.

Read the relevant sections in my /etc/XF86Config below:

Section "Monitor"

    Identifier  "My Monitor"
    VendorName  "Unknown"
    ModelName   "Unknown"

    HorizSync   31.5 - 48.5

    VertRefresh 50-90

   Modeline "800x600"     50    
     800  856  976 1040   600  637  643  666 +hsync +vsync

   Modeline "1024x768"    65    
     1024 1032 1176 1344   768  771  777  806 -hsync -vsync


Section "Device"
    Identifier  "SiS 6326"
    VendorName  "Unknown"
    BoardName   "Unknown"
    VideoRam    8192
    Option "noaccel"
#    Option "hw_clocks"
    Option "sw_cursor"
#    Option "no_linear"
    Option "no_bitblt"
    Option "no_imageblt"

    # Insert Clocks lines here if appropriate

# The Colour SVGA server

Section "Screen"
        Driver  "SVGA"
        Device  "SiS 6326"
        Monitor "My Monitor"
        DefaultColorDepth 16
    Subsection "Display"
        Depth       8
        Modes       "800x600" "1024x768"
        ViewPort    0 0
    Subsection "Display"
        Depth       16
        Modes       "1024x768" "800x600"
        ViewPort    0 0
    Subsection "Display"
        Depth       24
        Modes       "800x600" "1024x768"
        ViewPort    0 0

When I comment out the Option "no_bitblt" everything
appears to run just as fast (or faster) than windows95,
but the screen acts really weird. When I drag a window
it leaves a huge trail on the screen, the root window
appears to push itself right through the other windows,
colours are way-off, menus are unreadable, etc.

Is there anybody out there who can help get the settings
for my Diamond Speedstar A50 8Mb right?

Jelle-Frodo Huisman
Wormerveer, The Netherlands


Diamond Speedstar A50

Post by Jelle-Fro » Mon, 14 Dec 1998 04:00:00

[Posted and mailed]

Quote:> I got mine running with just the no_linear tag and the rest commented out.

I'll try that too.

Quote:> Runs fast and doesn't crash, but I get only 1024x768 resolution and only 8
> bpp.

Yikes! I don't fancy that.

Quote:>I am going to try your bit_blt suggestion and see how it works on mine.

The bit_blt speeds up operation dramatically......as far as I can make
out. The screen get's really messed up when I use this option.

Quote:> Do you get more than 8bit?

Yes. Currently I run at 16bbp. I have successfully tested 24bbp. I really
couldn't make out much difference between 24bbp an 16bbp, so I chose to
run 16bbp, because it theoretically should run faster.

Jelle-Frodo Huisman
Wormerveer, The Netherlands