1. sp2500k.zip Driver
2. README.TXT File Contents

README.TXT Driver File Contents (sp2500k.zip)

SCO UNIX LLI driver Installation
================================

A. Software Requirements:

   1. ODT 2.0 or higher version, or
      SCO Unix 3.2.4 or higher version, or
      SCO OpenServer 5.0 or higher version

   2. SCO Unix LLI driver disk

B. Installing Driver:

   1. Copy the file SUL430TD.Z to SUL430T.dd.Z on a SCO Unix machine.
   2. Uncompress SUL430T.dd.Z to SUL430T.dd, using:
         uncompress SUL430T.dd
   3. Copy the file to a diskette. To create a 3.5" floppy in drive 0, use:
         dd if=SUL430T.dd of=/dev/rfd0135ds18

   4. Run custom. From the menu select:
      Custom -> Install -> A New Product -> Entire Product

      For SCO OpenServer, run the Software Manager. From the menus select:
      Software -> Install New -> From Host -> Media Floppy -> Full

   5. Put the newly created diskette in the drive and select continue.

   6. When prompted for distribution floppy 1, just press enter.

   7. When custom has completed, remove the diskette and quit custom.

   8. Run netconfig. Add the desired chain. The D21X drivers are called:
      d21x0, d21x1, d21x2 and d21x3. Remember that d21x0 must be configured
      first, before any other driver is configured.

      NOTE: For boards with more than one Intel 21X4X on
            them, a driver must be installed for each active port on the
            board. Thus, if a board has two separate ports, two separate
            chains must be created in order to connect both ports to
            networks. This is similar to installing two boards, each with
            one port.

            Not all ports must be active. If only one port is used,
            it must be the first port (as it is found on the bus
            by the PCI BIOS).

   9. When the chain has been configured, select 'q' from the netconfig menu.
      If you don't wish to modify the space.c file relink the kernel at the
      prompt.

  10. If you wish to change parameters in the space.c file, edit
      /etc/conf/pack.d/d21x0/space.c and make the required changes.
      The changes will apply to all the installed boards.

      NOTE: If your system does not support 32-bit protected mode PCI
            BIOS calls, you MUST modify the parameter XXX_HW_ACCESSES
            to the PCI mechanism appropriate to your system (see space.c
            for details).

  11. Reboot the system.


C.  Parameters

   The space.c file contains the different parameters that can be modified.
   They can be divided into several groups:

   1. Port parameters. These include:
         XXX_HW_ACCESSES
         XXX_DC2114X_SERIAL_MODE
         XXX_BUS_ARBITRATION
         XXX_BURST_LENGTH
         XXX_CACHE_ALIGNMENT
         XXX_PASS_BAD_FRAMES
         XXX_BACKOFF_CNTR
         XXX_10MB_THRESHOLD
         XXX_100MB_THRESHOLD
         XXX_PARITY_ERROR_RESPONSE
         XXX_LATENCY_TIMER
         XXX_CRC_CALC
         XXX_DC2114X_GPR_CTRL
         XXX_DC2114X_GPR_DATA
         XXX_TURBO
         XXX_SNOOZE
         XXX_MWI,               /* Enable/Disable MWI extended PCI command */
         XXX_MRM,               /* Enable/Disable MRM extended PCI command */
         XXX_MRL                /* Enable/Disable MRL extended PCI command */
   2. Driver tuning parameters:
         XXX_RX_BUFS_TO_POST
         XXX_RX_PKTS_QUEUED_THRESH_HI
         XXX_RX_PKTS_QUEUED_THRESH_LO
         XXX_MAX_USRS

   3. Driver diagnostics control:
         XXX_DEBUG

   The meaning of each is explained in detail in the space.c file, including
   allowed values for each parameter. The values in space.c apply to ALL
   the installed boards.

   Space.c is NOT the place to modify the board's slot number line.
   This must be modified in netconfig, by running the reconfiguration
   script.