linear Addressing

Information for ISC Users : linear Addressing
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## 5. linear Addressing

- Compiling ...

  You need the mmap-2.2.3 driver installed on your system. If you don't have the mmap-2.2.3 driver installed, you could use the driver source in the file

      xc/programs/Xserver/hw/xfree86/etc/mmapSVR3.shar

  or

      /usr/X11R6/lib/X11/etc/mmapSVR3.shar

  Build and install the driver as instructed. You'll need the file /usr/include/sys/mmap.h for compiling the X11R6/XFree86 source tree, with linear addressing enabled.

      The new loadable X Server is not tested to work without linear addressing.

- Using ...

  To use the linear address-mapping of the framebuffer you need the mmap Driver by Thomas Wolfram (Version 2.2.3) installed in your Kernel. If you have installed it, most servers will use linear addressing by default. Others may require setting the

      Option "linear"

  in your XF86Config. Check the appropriate manual pages for details. Maybe you need also the MemBase specified in XF86Config. Please refer to the appropriate README of your Card/Server, for How to use...

  I could only test these cards on Interactive UNIX

  - Spea/V7 Vega - clgd5428 - VLB - (old)

    with 32MB MainMemory installed I couldn't use it. My tests with different mappings into the address space results in no Graphics displayed or a spontaneous reboot.

  - ATI GUP - mach32 - VLB - (old)

    with 32MB MainMemory installed I could map the CardMemory at MemBase 0x07c00000. I could work with all clients until I try to activate a Motif 1.1.1 InputField inside a Motif Client like Mosaic-2.4 or xplan. This results in a crash of the XServer.

                   !!! You could work around this !!!

    Expand your .Xdefaults with

                   *blinkRate:			0
                   *cursorPositionVisible:	false

    This bug seems to be fixed since 3.1.2, and therefore the workaround is not needed anymore.

  - ELSA Winner 2000PRO/X Revision G

    if you experience a Problem with this Card you could try to use the older Chipset Driver instead "newmmio".

    If you declare

                   Chipset "mmio_928"

    inside your XF86Config, it may be alright again.

    With the current XF86_S3 I don't encounter any problem.

  - Diamond FireGL 1000

        	   3Dlabs GLINT Permedia rev 1
        	   3Dlabs GLINT Delta rev 1

Information for ISC Users : linear Addressing
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