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       # MAYNARD ELECTRONICS
       
          4100M
       
          +------------------------------------------------------------+
          |------------------------------------------------------------|
          | Data bus:                | 8-bit, ISA                      |
          |--------------------------+---------------------------------|
          | Size:                    | Half-length, full-height card   |
          |--------------------------+---------------------------------|
          | Hard drive supported:    | N/A                             |
          |--------------------------+---------------------------------|
          | Floppy drives supported: | None                            |
          +------------------------------------------------------------+
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                    Function                     | Location |
          |-------------------------------------------------+----------|
          | 25-pin connector - tape drive connector -       |   CN1    |
          | external                                        |          |
          |-------------------------------------------------+----------|
          | 34-pin connector - tape drive connector -       |   CN2    |
          | internal                                        |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Location | Setting |
          |---------------------------------------+----------+---------|
          | » | Factory configured - do not alter |   JP5    | closed  |
          |---+-----------------------------------+----------+---------|
          | » | Factory configured - do not alter |   JP6    | closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   DMA CHANNEL SELECTION                    |
          |------------------------------------------------------------|
          | DMA  | JP3/A  | JP3/B  | JP3/C  | JP4/A  | JP4/B  | JP4/C  |
          |------+--------+--------+--------+--------+--------+--------|
          |»| 2  |  open  | closed |  open  |  open  | closed |  open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 1  | closed |  open  |  open  | closed |  open  |  open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 3  |  open  |  open  | closed |  open  |  open  | closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          | IRQ  | JP2/A  | JP2/B  | JP2/C  | JP2/D  | JP2/E  | JP2/F  |
          |------+--------+--------+--------+--------+--------+--------|
          |»| 6  |  open  | closed |  open  |  open  |  open  |  open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 2  |  open  |  open  |  open  |  open  |  open  | closed |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 3  |  open  |  open  |  open  |  open  | closed |  open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 4  |  open  |  open  |  open  | closed |  open  |  open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 5  |  open  |  open  | closed |  open  |  open  |  open  |
          |-+----+--------+--------+--------+--------+--------+--------|
          | | 7  | closed |  open  |  open  |  open  |  open  |  open  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   I/O ADDRESS SELECTION                    |
          |------------------------------------------------------------|
          |    Address     |  JP1/A   |  JP1/B   |  JP1/C   |  JP1/D   |
          |----------------+----------+----------+----------+----------|
          | » |  3F0-3F7h  |  closed  |   open   |   open   |   open   |
          |---+------------+----------+----------+----------+----------|
          |   |  370-377h  |   open   |   open   |  closed  |   open   |
          |---+------------+----------+----------+----------+----------|
          |   |  3E0-3E7h  |   open   |  closed  |   open   |   open   |
          |---+------------+----------+----------+----------+----------|
          |   |  360-367h  |   open   |   open   |   open   |  closed  |
          +------------------------------------------------------------+