WE ARE IN THE PROCESS OF CONFIGURING A MORE COMPLETE USER GUIDE ON THIS PRODUCT 
FOR THE BULLETIN BOARD.  IN THE INTERIM, THE FOLLOWING JUMPER DEFINITIONS MAY 
BE HELPFUL.

                                   WDSCS-ATXT
                                 Jumper Settings

**************************************************************************
Jumper Block "W1"
**************************************************************************

The W1 jumper block is a spare register for the BIOS to use.

**************************************************************************
Jumper Block "W2"
**************************************************************************

                   X=Installed
                   0=Removed

     SA8    SA7    SA6    SA5                 
     7-8    5-6    3-4    1-2                 I/O Port

      X      X      X      X                    200H
      X      X      X      O                    220H
      X      X      O      X                    240H
      X      X      O      O                    250H
      X      O      X      X                    280H
      X      O      X      O                    200H
      X      O      O      X                    2C0H
      X      O      O      O                    2E0H
      O      X      X      X                    300H
      O      X      X      O                    320H
      O      X      O      X                    340H
      O      X      O      O                    360H
      O      O      X      X                    380H
      O      O      X      O                    3A0H
      O      O      O      X                    3C0H
      O      O      O      O                    3E0H

**************************************************************************
Jumper Block "W3"
**************************************************************************

This jumper block is used to select the BIOS ROM Address location within the 
host system's memory space.  The HBIC always assumes that host address bits 
BA18 (MA18) and BA19 (MA19) are logic "1", therefore, the starting address 
cannot be lower than location C0000H.  The following defines the different 
jumper settings and is followed by an example:

















            MA19   MA18   MA17   MA16  MA15   MA14
             1      1     ------Jumpers----------

     Signals MA14-MA17 (BA14-BA17):
     
     Jumper OFF = logic "1"
     Jumper ON  = logic "0"
     

EXAMPLE:  ATXT BIOS ROM Address = C8000H

Jumpers            7-8    5-6    3-4   1-2
Address Bits              MA17   MA16  MA15   MA14
Jumper Settings     ON     ON     OFF   ON


**************************************************************************
Jumper Block "W4"
**************************************************************************

This jumper block is to select Interrupt Request channel.  Only one jumper 
shall be used to select one Channel.

    "W4":          1-2    3-4    5-6   7-8    9-10   11-12
 Channel:          BIRQ2  BIRQ3  BIRQ4 BIRQ5  BIRQ6  BIRQ7

                    ON     --     --    --     --     --    = IRQ2 SELECTED
                    --     ON     --    --     --     --    = IRQ3 SELECTED
                    --     --     ON    --     --     --    = IRQ4 SELECTED
                    --     --     --    ON     --     --    = IRQ5 SELECTED
                    --     --     --    --     ON     --    = IRQ6 SELECTED
                    --     --     --    --     --     ON    = IRQ7 SELECTED

**************************************************************************
Jumper Block "W5"
**************************************************************************

W5 is used to tie together two different signal lines between Jumper Blocks 
"W1" and "W2".

     "W5":         1-2    3-4
                   
                   OFF    OFF = Neither signal line tied.
                    ON    OFF = "W1" 9-10 tied to "W2" 1-2 only.
                   OFF     ON = "W1" 11-12 tied to "W2" 3-4 only.
                    ON     ON = Both signal lines tied.