IRWIN
=====

   4100M

   Card Type               Tape drive controller                  
   Hard Drives supported   None                                   
   Floppy drives supported None                                   
   Data Bus                8-bit ISA                              
   Card Size               Half-length, full-height               
                                                                  

<gopher://bitreich.org/I/th99/i/I-L/53126-1.png>
   

   +------------------------------------------------------------+
   |                        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 alter  |  J3   |  Closed  |
   |----+------------------------------------+-------+----------|
   |>>  | Factory configured - do not alter  |  J4   |  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   |   J1/1    |   J1/2    |   J1/3    |   J1/4   |
   |-------------+-----------+-----------+-----------+----------|
   |   |  360h   |   Open    |   Open    |   Open    |  Closed  |
   |---+---------+-----------+-----------+-----------+----------|
   |>> |  370h   |   Open    |   Open    |  Closed   |   Open   |
   |---+---------+-----------+-----------+-----------+----------|
   |   |  3E0h   |   Open    |  Closed   |   Open    |   Open   |
   |---+---------+-----------+-----------+-----------+----------|
   |   |  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 |  Open  |  Open  |  Open  | Open  | Open  |Closed |
   |--+------+--------+--------+--------+-------+-------+-------|
   |  | IRQ3 |  Open  |  Open  |  Open  | Open  |Closed | Open  |
   |--+------+--------+--------+--------+-------+-------+-------|
   |  | IRQ4 |  Open  |  Open  |  Open  |Closed | Open  | Open  |
   |--+------+--------+--------+--------+-------+-------+-------|
   |  | IRQ5 |  Open  |  Open  | Closed | Open  | Open  | Open  |
   |--+------+--------+--------+--------+-------+-------+-------|
   |>> | IRQ6 |  Open  | Closed |  Open  | Open  | Open  | Open  |
   |--+------+--------+--------+--------+-------+-------+-------|
   |  | IRQ7 | Closed |  Open  |  Open  | Open  | Open  | Open  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | The 4100M is used with Irwin AccuTrak series A250, A250PC  |
   | or A250E tape drive. The controller can also be used with  |
   | A120A, A120PC or A120E tape drive in certain systems.      |
   +------------------------------------------------------------+