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       # GSI, INC.
       
          MODEL 18 (PART #1533-18-06-1)
       
          Data Bus                16-bit ISA                             
          Card Size               Half height, half length               
          Hard Drives Supported   Two EIDE devices                       
          Floppy Drives Supported None                                   
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function        | Label |      Function      | Label |
          |-----------------------+-------+--------------------+-------|
          | VESA local bus        |  J1   | 40-pin IDE(AT)     |  J6   |
          | extension module      |       | connector          |       |
          |-----------------------+-------+--------------------+-------|
          | 4-pin DC power out    |  J5   | 4-pin drive active |  J8   |
          |                       |       | LED                |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Setting                 | Label | Position  |
          |----------------------------------------+-------+-----------|
          | » | Factory configured - do not alter  | J4/A  |   Open    |
          |---+------------------------------------+-------+-----------|
          | » | IDE(AT) interrupt is IRQ15,        | J4/B  | Pins 1 &  |
          |   | address is 170h                    |       | 2 closed  |
          |---+------------------------------------+-------+-----------|
          |   | IDE(AT) interrupt is IRQ14,        | J4/B  | Pins 2 &  |
          |   | address is 1F0h                    |       | 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   BIOS ADDRESS SELECTION                   |
          |------------------------------------------------------------|
          |     Setting      |        J4/C        |        J4/D        |
          |------------------+--------------------+--------------------|
          | » |    C800h     | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          |---+--------------+--------------------+--------------------|
          |   |    CC00h     | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
          |---+--------------+--------------------+--------------------|
          |   |    D000h     | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
          |---+--------------+--------------------+--------------------|
          |   |    E000h     | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          +------------------------------------------------------------+