UNIDENTIFIED
============

   AT BUS + 2S/1P

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 16-bit, ISA                            |
   |-------------------+----------------------------------------|
   | Size:             | Half-length, full-height card          |
   |-------------------+----------------------------------------|
   | Hard drive        | Two IDE (AT) Interface drives          |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
   | supported:        | drives                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/U-Z/20422-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                   Function                    |  Location  |
   |-----------------------------------------------+------------|
   | 40-pin IDE(AT) Interface connector            |     J1     |
   |-----------------------------------------------+------------|
   | 34-pin control cable connector - floppy drive |     J2     |
   |-----------------------------------------------+------------|
   | 4-pin connector - Drive active LED            |     J5     |
   |-----------------------------------------------+------------|
   | 10-pin serial port (COM2/4) - internal        |     J9     |
   |-----------------------------------------------+------------|
   | 10-pin serial port (COM1/3) - external        |    J10     |
   |-----------------------------------------------+------------|
   | 25-pin parallel port (LPT1/2) - external      |    J12     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function            |   Location   |  Setting   |
   |--------------------------------+--------------+------------|
   |>> | Single speed floppy drives |      J3      | pins 1 & 2 |
   |   | supported                  |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Dual speed floppy drives   |      J3      | pins 2 & 3 |
   |   | supported                  |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Floppy drive               |      J4      | pins 2 & 3 |
   |   | precompensation enabled    |              |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Floppy drive               |      J4      | pins 1 & 2 |
   |   | precompensation disabled   |              |   closed   |
   |---+----------------------------+--------------+------------|
   |>> | Chasis ground enabled      |     J11      |   closed   |
   |---+----------------------------+--------------+------------|
   |   | Chasis ground disabled     |     J11      |    open    |
   |---+----------------------------+--------------+------------|
   |>> | Serial Port 2 (J9)         | J13/jumper 3 |   closed   |
   |   | Interrupt Request IRQ3     |              |            |
   |   | enabled                    |              |            |
   |---+----------------------------+--------------+------------|
   |   | Serial Port 2 (J9)         | J13/jumper 3 |    open    |
   |   | Interrupt Request IRQ3     |              |            |
   |   | disabled                   |              |            |
   |---+----------------------------+--------------+------------|
   |>> | Serial Port 1 (J10)        | J13/jumper 4 |   closed   |
   |   | Interrupt Request IRQ4     |              |            |
   |   | enabled                    |              |            |
   |---+----------------------------+--------------+------------|
   |   | Serial Port 1 (J10)        | J13/jumper 4 |    open    |
   |   | Interrupt Request IRQ4     |              |            |
   |   | disabled                   |              |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  BIOS TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |            Type            |  J6/jumper 1  |  J6/jumper 2  |
   |----------------------------+---------------+---------------|
   |>> |  IBM-compatible BIOS   |     open      |    closed     |
   |---+------------------------+---------------+---------------|
   |   |        IBM BIOS        |    closed     |     open      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             SERIAL PORT 1 (J10) CONFIGURATION              |
   |------------------------------------------------------------|
   |          COM           |   J7/jumper 1   |   J7/jumper 3   |
   |------------------------+-----------------+-----------------|
   |>> |         1          |     closed      |      open       |
   |---+--------------------+-----------------+-----------------|
   |   |         3          |      open       |     closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 (J9) CONFIGURATION              |
   |------------------------------------------------------------|
   |          COM           |   J7/jumper 2   |   J7/jumper 4   |
   |------------------------+-----------------+-----------------|
   |>> |         2          |     closed      |      open       |
   |---+--------------------+-----------------+-----------------|
   |   |         4          |      open       |     closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             PARALLEL PORT (J12) CONFIGURATION              |
   |------------------------------------------------------------|
   |          LPT           |   J7/jumper 5   |   J7/jumper 6   |
   |------------------------+-----------------+-----------------|
   |>> |         1          |      open       |     closed      |
   |---+--------------------+-----------------+-----------------|
   |   |         2          |     closed      |      open       |
   |---+--------------------+-----------------+-----------------|
   |   |      Disabled      |      open       |      open       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FLOPPY DRIVE CONFIGURATION                 |
   |------------------------------------------------------------|
   |            Function            | J8/jumper 1 | J8/jumper 2 |
   |--------------------------------+-------------+-------------|
   |>> | Floppy drive port address  |   closed    |    open     |
   |   | is 3F0-3F7h                |             |             |
   |---+----------------------------+-------------+-------------|
   |   | Floppy drive port address  |    open     |   closed    |
   |   | is 370-377h                |             |             |
   |---+----------------------------+-------------+-------------|
   |   | Floppy drive disabled      |    open     |    open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           PARALLEL PORT (J12) INTERRUPT REQUEST            |
   |------------------------------------------------------------|
   |          IRQ           |  J13/jumper 1   |  J13/jumper 2   |
   |------------------------+-----------------+-----------------|
   |    |         5         |     closed      |      open       |
   |----+-------------------+-----------------+-----------------|
   |>>  |         7         |      open       |     closed      |
   +------------------------------------------------------------+