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       # SEA LEVEL SYSTEMS, INC.
       
          ACB-II
       
          Card Type           Serial card                                
          Chip Set            Unidentified                               
          I/O Options         Serial port                                
          Data Bus            8-bit ISA                                  
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |           Function            |           Label            |
          |-------------------------------+----------------------------|
          | Serial port                   |             P1             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          | » | Factory configured - do not     |  E1   |     Open     |
          |   | alter (IRQ selection)           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     |  E2   | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     |  E5   | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     |  E6   | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | DMA enabled                     |  E7   |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | DMA disabled                    |  E7   |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     |  E9   |    Closed    |
          |   | alter (IRQ selection)           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     |  E10  | Unidentified |
          |   | alter                           |       |              |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     |  E11  | Unidentified |
          |   | alter                           |       |              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |Setting |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5|SW1/6|SW1/7|SW1/8|
          |--------+------+------+------+------+-----+-----+-----+-----|
          |  | 3F8 | Off  | Off  | Off  | Off  | Off | Off | Off | On  |
          |--+-----+------+------+------+------+-----+-----+-----+-----|
          |  | 378 | Off  | Off  | Off  | Off  | Off | Off | On  | Off |
          |--+-----+------+------+------+------+-----+-----+-----+-----|
          |  | 2F8 | Off  | Off  | Off  | Off  | Off | On  | Off | Off |
          |--+-----+------+------+------+------+-----+-----+-----+-----|
          |  | 278 | Off  | Off  | Off  | Off  | On  | Off | Off | Off |
          |--+-----+------+------+------+------+-----+-----+-----+-----|
          |  | 3B8 | Off  | Off  | Off  |  On  | Off | Off | Off | Off |
          |--+-----+------+------+------+------+-----+-----+-----+-----|
          |  | 338 | Off  | Off  |  On  | Off  | Off | Off | Off | Off |
          |--+-----+------+------+------+------+-----+-----+-----+-----|
          |  | 2B8 | Off  |  On  | Off  | Off  | Off | Off | Off | Off |
          |--+-----+------+------+------+------+-----+-----+-----+-----|
          |» | 238 |  On  | Off  | Off  | Off  | Off | Off | Off | Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   DMA CHANNEL SELECTION                    |
          |------------------------------------------------------------|
          |          Channel           |              E3               |
          |----------------------------+-------------------------------|
          |    |           1           |   Pins 1 & 3, 2 & 4 closed    |
          |----+-----------------------+-------------------------------|
          | »  |           3           |   Pins 3 & 5, 4 & 6 closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     I/O PIN SELECTION                      |
          |------------------------------------------------------------|
          |            SETTING            |             E4             |
          |-------------------------------+----------------------------|
          |   RXC pin as input to DB-25   |     Pins 1 & 2 closed      |
          |-------------------------------+----------------------------|
          |    RDB pin as input to SCC    |     Pins 3 & 4 closed      |
          |-------------------------------+----------------------------|
          |    TXC as output to DB-25     |     Pins 5 & 6 closed      |
          |-------------------------------+----------------------------|
          |    DTR as output to DB-25     |     Pins 7 & 8 closed      |
          |-------------------------------+----------------------------|
          |    TDB as output to DB-25     |     Pins 9 & 10 closed     |
          +------------------------------------------------------------+