local-bus IDE and VGA (Cirrus 542x)

local-bus IDE and VGA (Cirrus 542x)

Post by Gerard van Ling » Fri, 08 Oct 1993 23:47:02


I want to decide what local-bus 486-configuration is oke for Linux with X11.

I'm testing VL-486DX266 systems with 8MB and local bus boards.

System I : This is a 486DX266 with one VL-combo for IDE and VGA.
           The Chipset for the VGA : Cirrus Logic CL-GD5426-80QC-A.

The VL-combo board has jumpers for :

    VESA BUS VGA (enable/disable)
    VESA BUS IDE SPEED : normal/medium/high speed & reserved mode.
    IDE BIOS SELECT (enable/disable & segment address)

System II : This is a 486DX266 with a VL-VGA with Cirrus Logic 5426/28
                               and a FSIOL-PA1 VL-Bus board for IDE.

The boards have jumpers :

   VL-VGA IRQ9 (disable/enable)
          GREEN PC (disable/anable)
          This board has 1 MB (may be updated with 2 MB)

   VL-IDE HDD R/W Speed (600ns/380ns/200ns)

Questions :

1. What's the performance-gain of the local-bus (compared to normal ISA)
   for a WD-Caviar WDAC2250? How can I measure this?

2. X11 does not start.
   This is the information, I have for the VL-Combo board :

-rwsr-xr-x   1 root     root      1373188 Jun 16  1993 XF86_SVGA

My Xconfig :

FontPath        "/usr/lib/X11/fonts/misc/,/usr/lib/X11/fonts/75dpi/"

  AutoRepeat 500 5

MouseSystems    "/dev/ttys0"
  BaudRate      1200

  Virtual  1024 768
  ViewPort      0 0
  Modes         "640x480"
# Clocks 25 28 41 36 32 40 45 50 65 72 75 80
  Chipset       "clgd5426"

#"1024x768"   75  1024 1048 1184 1328    768  771  777  806
#"800x600"    45   800  810  936  970    600  638  644  667
 "640x480"    25   640  672  760  800    480  491  493  525

The messages I get :

Setting TCP SO_LINGER: Protocol not available
XFree86 Version 1.3 / X Window System
(protocol Version 11, revision 0, vendor release 5000)
Operating System: Linux
Configured drivers:
  VGA256 (256 colour SVGA):
      et4000, et3000, pvga1, wd90c00, wd90c10, wd90c30, gvga, ati,
      tvga8800cs, tvga8900b, tvga8900c, tvga8900cl, tvga9000, clgd5420,
      clgd5422, clgd5424, clgd5426, ncr77c22, ncr77c22e, cpq_avga
(using VT number 5)

Xconfig: /usr/X386/lib/X11/Xconfig
Mouse: type: MouseSystems, device: /dev/ttys0, baudrate: 1200
FontPath set to "/usr/lib/X11/fonts/misc/,/usr/lib/X11/fonts/75dpi/"
VGA256: clgd5426 (mem: 1024k numclocks: 12)
VGA256:   clocks:  25.23  28.32  41.16  36.08  31.50  39.99  45.08  49.87
VGA256:   clocks:  64.98  72.16  75.00  80.01
VGA256: Mode "640x480": mode clock =  25.000, clock used =  25.226
VGA256: Virtual resolution set to 1024x768
Caught signal 11.  Server aborting
giving up.

For the other VL-VGA board with the Cirrus Chipset, the messages are
almost the same. But if in the Xconfig no Chipset is specified, the server
detects the Chipset.

The following message appears :

Cirrus Logic Chipset used, but unknown type.
And the same signal 11 occurs.

Any help greatly appreciated.



local-bus IDE and VGA (Cirrus 542x)

Post by Andrew R. Tef » Sat, 09 Oct 1993 21:39:03

Quote:>2. X11 does not start.
>   This is the information, I have for the VL-Combo board :

>-rwsr-xr-x   1 root     root      1373188 Jun 16  1993 XF86_SVGA

Here is your problem, identified by the date of the file.
The very first Linux release, dated Jun 16, somehow lost a line
or so in the source of the Cirrus driver and seg faults because of it.
If you pick up the current 1.3 link kit or binary archive you can
create/get the corrected server.



1. Drivers for Promise DC-420 Local-bus IDE controller ?

I've just purchased a Promise DC-420 Local-bus IDE controller, and would like
to know if anyone knows of any drivers for this peripheral.

The controller should work under any OS, but the question is whether Linux can
fully utilize the controller without drivers (that is, with regards to speed
(i.e. high transfer rate on the local bus and caching)).  

As far as I can tell by examining the documentation of the included drivers for
SCO/Unix and AT&T Unix, the drivers are generic with regards to the exact
version of the controller (i.e. drivers for a Promise DC-200 should also work
... hmmm ...  this probably doesn't include the ISA-bus versions of the Promise
controllers), but the controller does need drivers under DOS for maximum
performance (this is the only OS covered exlicitly by the manual).



|       Student of Computer Science at Aarhus University, Denmark      |

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