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

   ML-863

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 32-bit VL-bus                          |
   |-------------------+----------------------------------------|
   | Size:             | Three-quarter length, half-height card |
   |-------------------+----------------------------------------|
   | Hard drive        | Two IDE(AT) drives                     |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
   | supported:        | drives                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/U-Z/20924-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                     | Location |
   |-------------------------------------------------+----------|
   | 25-pin parallel port - external                 |   CN1    |
   |-------------------------------------------------+----------|
   | 10-pin serial port 2 - internal                 |   CN2    |
   |-------------------------------------------------+----------|
   | 9-pin serial port 1 - external, 10-pin serial   |   CN3    |
   | port 1 - internal                               |          |
   |-------------------------------------------------+----------|
   | 16-pin game port                                |   CN4    |
   |-------------------------------------------------+----------|
   | 34-pin cable connector - floppy drive           |   CN5    |
   |-------------------------------------------------+----------|
   | 40-pin primary IDE(AT) connector                |   CN6    |
   |-------------------------------------------------+----------|
   | 4-pin connector - drive active LED              |   CN7    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | IOCHRDY signal disabled        |   JP1    | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | IOCHRDY signal enabled         |   JP1    | pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | CPU speed is 40,50 MHz         |   JP2    | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | CPU speed is <=33MHz           |   JP2    | pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | IDE(AT) interface enabled      |   JP3    | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | IDE(AT) interface disabled     |   JP3    | pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive interface enabled |   JP4    | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive interface         |   JP4    | pins 2 & 3 |
   |   | disabled                       |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           USER CONFIGURABLE SETTINGS (CONTINUED)           |
   |------------------------------------------------------------|
   |            Function            | Location |    Setting     |
   |--------------------------------+----------+----------------|
   |>> | Game port enabled          |   JP5    |   pins 1 & 2   |
   |   |                            |          |     closed     |
   |---+----------------------------+----------+----------------|
   |   | Game port disabled         |   JP5    |   pins 2 & 3   |
   |   |                            |          |     closed     |
   |---+----------------------------+----------+----------------|
   |>> | Floppy drive select        |   JP7    |   pins 1 & 2   |
   |   | primary                    |          |     closed     |
   |---+----------------------------+----------+----------------|
   |   | Floppy drive select        |   JP7    |   pins 2 & 3   |
   |   | secondary                  |          |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       LPT        |        JP6         |        JP12        |
   |------------------+--------------------+--------------------|
   |>> |  LPT2(378h)  | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | LPT3 (278h)  | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   |        N/A         | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       COM        |        JP10        |        JP11        |
   |------------------+--------------------+--------------------|
   |>> | COM1 (3F8h)  | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | COM3 (3E8h)  | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   |        N/A         | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       COM        |        JP8         |        JP9         |
   |------------------+--------------------+--------------------|
   |>> | COM2 (2F8h)  | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   | COM4 (2E8h)  | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |   Disabled   |        N/A         | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            IDE HARD DISK DRIVE SPEED SELECTION             |
   |------------------------------------------------------------|
   |      Device Speed       |      JP13      |      JP14       |
   |-------------------------+----------------+-----------------|
   |>> | Low - 600ns         |   pins 1 & 2   |   pins 1 & 2    |
   |   |                     |     closed     |     closed      |
   |---+---------------------+----------------+-----------------|
   |   | Normal - 500ns      |   pins 1 & 2   |   pins 2 & 3    |
   |   |                     |     closed     |     closed      |
   |---+---------------------+----------------+-----------------|
   |   | Fast speed - 383ns  |   pins 2 & 3   |   pins 1 & 2    |
   |   |                     |     closed     |     closed      |
   |---+---------------------+----------------+-----------------|
   |   | Turbo speed - 240ns |   pins 2 & 3   |   pins 2 & 3    |
   |   |                     |     closed     |     closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | The location of pin 1 is unidentified on jumpers JP1-JP12. |
   +------------------------------------------------------------+