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       # EVEREX SYSTEMS, INC.
       
          EV-390
       
          +------------------------------------------------------------+
          |------------------------------------------------------------|
          | Data bus:                | 8-bit, ISA                      |
          |--------------------------+---------------------------------|
          | Size:                    | Full-length, full-height card   |
          |--------------------------+---------------------------------|
          | Hard drive supported:    | Two MFM ST506/412 drives        |
          |--------------------------+---------------------------------|
          | Floppy drives supported: | Four 360KB drives               |
          +------------------------------------------------------------+
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                    Function                     | Location |
          |-------------------------------------------------+----------|
          | 34-pin control cable connector - hard drive     |    J1    |
          |-------------------------------------------------+----------|
          | 20-pin data cable connector - drive 1           |    J2    |
          |-------------------------------------------------+----------|
          | 20-pin data cable connector - drive 2           |    J3    |
          |-------------------------------------------------+----------|
          | 37-pin external drive connector                 |    J4    |
          |-------------------------------------------------+----------|
          | 34-pin control cable connector - floppy drive 1 |    J5    |
          |-------------------------------------------------+----------|
          | 34-pin control cable connector - floppy drive 0 |    J6    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               |  Location  | Setting |
          |-------------------------------------+------------+---------|
          | » | Floppy drives enabled           |    W10     | Closed  |
          |---+---------------------------------+------------+---------|
          |   | Floppy drives disabled          |    W10     |  Open   |
          |---+---------------------------------+------------+---------|
          | » | Factory configured - do not     | SW1/jumper |   N/A   |
          |   | alter                           |     5      |         |
          |---+---------------------------------+------------+---------|
          | » | Factory configured - do not     | SW1/jumper |   N/A   |
          |   | alter                           |     6      |         |
          |---+---------------------------------+------------+---------|
          | » | Factory configured - do not     | SW1/jumper |   N/A   |
          |   | alter                           |     7      |         |
          |---+---------------------------------+------------+---------|
          | » | Factory configured - do not     | SW1/jumper |   N/A   |
          |   | alter                           |     8      |         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |         3.92A/3.93 EPROM CHIP DRIVE FORMATS - SW1          |
          |------------------------------------------------------------|
          |Capacity|Heads|Cylinders|Drive 1 |Drive 2 |                 |
          |--------+-----+---------+--------+--------+-----------------|
          |        |     |         |Jumper 3|Jumper 4|Jumper 1|Jumper 2|
          |--------+-----+---------+--------+--------+--------+--------|
          |  10MB  |  4  |   306   |  Open  |  Open  |  Open  |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          | 10.7MB |  2  |   615   | Closed |  Open  | Closed |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          | 21.4MB |  4  |   615   |  Open  | Closed |  Open  | Closed |
          |--------+-----+---------+--------+--------+--------+--------|
          | 31.9MB |  5  |   733   | Closed | Closed | Closed | Closed |
          |--------+-----+---------+--------+--------+--------+--------|
          | 42.5MB |  5  |   977   | Closed | Closed | Closed | Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            3.94 EPROM CHIP DRIVE FORMATS - SW1             |
          |------------------------------------------------------------|
          |Capacity|Heads|Cylinders|Drive 1 |Drive 2 |                 |
          |--------+-----+---------+--------+--------+-----------------|
          |        |     |         |Jumper 3|Jumper 4|Jumper 1|Jumper 2|
          |--------+-----+---------+--------+--------+--------+--------|
          |  10MB  |  4  |   306   |  Open  |  Open  |  Open  |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          |  42MB  |  8  |   615   | Closed |  Open  | Closed |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          | 21.4MB |  4  |   615   |  Open  | Closed |  Open  | Closed |
          |--------+-----+---------+--------+--------+--------+--------|
          | 42.8MB |  6  |   820   | Closed | Closed | Closed | Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            3.95 EPROM CHIP DRIVE FORMATS - SW1             |
          |------------------------------------------------------------|
          |Capacity|Heads|Cylinders|Drive 1 |Drive 2 |                 |
          |--------+-----+---------+--------+--------+-----------------|
          |        |     |         |Jumper 3|Jumper 4|Jumper 1|Jumper 2|
          |--------+-----+---------+--------+--------+--------+--------|
          | 80.2MB |  9  |  1024   |  Open  |  Open  |  Open  |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          |  42MB  |  8  |   615   | Closed |  Open  | Closed |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          | 21.4MB |  4  |   615   |  Open  | Closed |  Open  | Closed |
          |--------+-----+---------+--------+--------+--------+--------|
          | 42.8MB |  6  |   820   | Closed | Closed | Closed | Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            3.96 EPROM CHIP DRIVE FORMATS - SW1             |
          |------------------------------------------------------------|
          |Capacity|Heads|Cylinders|Drive 1 |Drive 2 |                 |
          |--------+-----+---------+--------+--------+-----------------|
          |        |     |         |Jumper 3|Jumper 4|Jumper 1|Jumper 2|
          |--------+-----+---------+--------+--------+--------+--------|
          | 44.5MB |  5  |  1024   |  Open  |  Open  |  Open  |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          | 71.3MB |  8  |  1024   | Closed |  Open  | Closed |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          | 21.4MB |  4  |   615   |  Open  | Closed |  Open  | Closed |
          |--------+-----+---------+--------+--------+--------+--------|
          | 31.9MB |  5  |   733   | Closed | Closed | Closed | Closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            3.97 EPROM CHIP DRIVE FORMATS - SW1             |
          |------------------------------------------------------------|
          |Capacity|Heads|Cylinders|Drive 1 |Drive 2 |                 |
          |--------+-----+---------+--------+--------+-----------------|
          |        |     |         |Jumper 3|Jumper 4|Jumper 1|Jumper 2|
          |--------+-----+---------+--------+--------+--------+--------|
          | 42.2MB |  6  |   809   |  Open  |  Open  |  Open  |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          | 10.7MB |  2  |   615   | Closed |  Open  | Closed |  Open  |
          |--------+-----+---------+--------+--------+--------+--------|
          | 21.4MB |  4  |   615   |  Open  | Closed |  Open  | Closed |
          |--------+-----+---------+--------+--------+--------+--------|
          | 31.9MB |  5  |   733   | Closed | Closed | Closed | Closed |
          |--------+-----+---------+--------+--------+--------+--------|
          | 42.5MB |  5  |   977   | Closed | Closed | Closed | Closed |
          +------------------------------------------------------------+