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       # IRWIN
       
          4100C
       
          Card Type               Tape drive controller                  
          Hard Drives supported   None                                   
          Floppy drives supported None                                   
          Data Bus                8-bit ISA                              
          Card Size               Half-length, full-height               
                                                                         
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function       | Label |      Function       | Label |
          |----------------------+-------+---------------------+-------|
          | Tape drive interface |  CN1  |  34-pin tape drive  |  CN2  |
          | - external           |       |     interface -     |       |
          |                      |       |      internal       |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label  |  Position   |
          |-------------------------------------+--------+-------------|
          | »   | Factory configured - do not   |  J3/1  | Pins 2 & 3  |
          |     | alter                         |        |   closed    |
          |-----+-------------------------------+--------+-------------|
          | »   | Factory configured - do not   |  J3/2  | Pins 2 & 3  |
          |     | alter                         |        |   closed    |
          |-----+-------------------------------+--------+-------------|
          | »   | Factory configured - do not   |  J3/3  | Pins 1 & 2  |
          |     | alter                         |        |   closed    |
          |-----+-------------------------------+--------+-------------|
          | »   | Factory configured - do not   |  J3/4  | Pins 2 & 3  |
          |     | alter                         |        |   closed    |
          |------------------------------------------------------------|
          |      Note:Changing the above settings can result in damage |
          |      to the controller and tape drive.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   DMA CHANNEL SELECTION                    |
          |------------------------------------------------------------|
          | Channel |  J2/7  |  J2/8  |  J2/9  | J2/10 | J2/11 | J2/12 |
          |---------+--------+--------+--------+-------+-------+-------|
          |   |1    | Closed |  Open  |  Open  |Closed | Open  | Open  |
          |---+-----+--------+--------+--------+-------+-------+-------|
          |»  |2    |  Open  | Closed |  Open  | Open  |Closed | Open  |
          |---+-----+--------+--------+--------+-------+-------+-------|
          |   |3    |  Open  |  Open  | Closed | Open  | Open  |Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |   Address   |   J1/A    |   J1/B    |   J1/C    |   J1/D   |
          |-------------+-----------+-----------+-----------+----------|
          |   |  360h   |   Open    |   Open    |  Closed   |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          | » |  370h   |   Open    |  Closed   |   Open    |   Open   |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  3E0h   |   Open    |   Open    |   Open    |  Closed  |
          |---+---------+-----------+-----------+-----------+----------|
          |   |  3F0h   |  Closed   |   Open    |   Open    |   Open   |
          |------------------------------------------------------------|
          |      Note: Do not use address 3F0h.                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          | Setting |  J2/1  |  J2/2  |  J2/3  | J2/4  | J2/5  | J2/6  |
          |---------+--------+--------+--------+-------+-------+-------|
          |  | IRQ2 | Closed |  Open  |  Open  | Open  | Open  | Open  |
          |--+------+--------+--------+--------+-------+-------+-------|
          |  | IRQ3 |  Open  | Closed |  Open  | Open  | Open  | Open  |
          |--+------+--------+--------+--------+-------+-------+-------|
          |  | IRQ4 |  Open  |  Open  | Closed | Open  | Open  | Open  |
          |--+------+--------+--------+--------+-------+-------+-------|
          |  | IRQ5 |  Open  |  Open  |  Open  |Closed | Open  | Open  |
          |--+------+--------+--------+--------+-------+-------+-------|
          |» | IRQ6 |  Open  |  Open  |  Open  | Open  |Closed | Open  |
          |--+------+--------+--------+--------+-------+-------+-------|
          |  | IRQ7 |  Open  |  Open  |  Open  | Open  | Open  |Closed |
          +------------------------------------------------------------+