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

   TURBO MAINBOARD MB-101

   Processor             8088                                     
   Processor Speed       10MHz                                    
   Chip Set              None                                     
   Max. Onboard DRAM     640KB                                    
   Cache                 None                                     
   BIOS                  Unidentified                             
   Dimensions            220mm x 220mm                            
   I/O Options           None                                     
   NPU Options           8087                                     

<gopher://bitreich.org/I/th99/m/U-Z/30822-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |   CN1    | Turbo switch   |   JP3    |
   |---------------------+----------+----------------+----------|
   | Speaker             |   CN3    | Reset switch   |   JP4    |
   |---------------------+----------+----------------+----------|
   | Turbo LED           |   JP1    |                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function             | Jumper/Switch | Position |
   |---------------------------------+---------------+----------|
   |>> | Parity check enabled        |      JP2      |   Open   |
   |---+-----------------------------+---------------+----------|
   |   | Parity check disabled       |      JP2      |  Closed  |
   |---+-----------------------------+---------------+----------|
   |>> | Factory configured - do not |     SW1/1     |   Off    |
   |   | alter                       |               |          |
   |---+-----------------------------+---------------+----------|
   |>> | NPU disabled                |     SW1/2     |   Off    |
   |---+-----------------------------+---------------+----------|
   |   | NPU enabled                 |     SW1/2     |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Bank | 256KB  | 256KB  | 512KB  | 512KB  | 640KB  | 640KB  |
   |------+--------+--------+--------+--------+--------+--------|
   | Bank |  (8)   |  NONE  |  (8)   |  NONE  |  (8)   |  NONE  |
   |  0   | 41256  |        | 41256  |        | 41256  |        |
   |------+--------+--------+--------+--------+--------+--------|
   | Bank |  NONE  |  NONE  |  (8)   |  NONE  |  (8)   |  NONE  |
   |  1   |        |        | 41256  |        | 41256  |        |
   |------+--------+--------+--------+--------+--------+--------|
   | Bank |  NONE  |  NONE  |  NONE  |  NONE  |  (8)   |  NONE  |
   |  2   |        |        |        |        |  4164  |        |
   |------+--------+--------+--------+--------+--------+--------|
   | Bank |  NONE  |  NONE  |  NONE  |  NONE  |  (8)   |  NONE  |
   |  3   |        |        |        |        |  4164  |        |
   |------+--------+--------+--------+--------+--------+--------|
   | Bank |  NONE  |  (2)   |  NONE  |  (2)   |  NONE  |  (2)   |
   |  4   |        | 44256  |        | 44256  |        | 44256  |
   |------+--------+--------+--------+--------+--------+--------|
   | Bank |  NONE  |  NONE  |  NONE  |  (2)   |  NONE  |  (2)   |
   |  5   |        |        |        | 44256  |        | 44256  |
   |------+--------+--------+--------+--------+--------+--------|
   | Bank |  NONE  |  NONE  |  NONE  |  NONE  |  NONE  |  (2)   |
   |  6   |        |        |        |        |        |  4464  |
   |------+--------+--------+--------+--------+--------+--------|
   | Bank |  NONE  |  NONE  |  NONE  |  NONE  |  NONE  |  (2)   |
   |  7   |        |        |        |        |        |  4464  |
   |------+--------+--------+--------+--------+--------+--------|
   |  U9  |  (1)   |  (1)   |  (1)   |  (1)   |  (1)   |  (1)   |
   |      | 41256  | 41256  | 41256  | 41256  | 41256  | 41256  |
   |------+--------+--------+--------+--------+--------+--------|
   | U18  |  NONE  |  NONE  |  (1)   |  (1)   |  (1)   |  (1)   |
   |      |        |        | 41256  | 41256  | 41256  | 41256  |
   |------+--------+--------+--------+--------+--------+--------|
   | U27  |  NONE  |  NONE  |  NONE  |  NONE  |  (1)   |  (1)   |
   |      |        |        |        |        |  4164  |  4164  |
   |------+--------+--------+--------+--------+--------+--------|
   | U36  |  NONE  |  NONE  |  NONE  |  NONE  |  (1)   |  (1)   |
   |      |        |        |        |        |  4164  |  4164  |
   |------------------------------------------------------------|
   | Note:If parity checking is disabled, then DRAM is not      |
   | needed in U9, U18, U27, and U36.                           |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   |       Size        |       SW1/3        |       SW1/4       |
   |-------------------+--------------------+-------------------|
   |       256KB       |        Open        |       Open        |
   |-------------------+--------------------+-------------------|
   |       512KB       |       Closed       |       Open        |
   |-------------------+--------------------+-------------------|
   |       640KB       |       Closed       |      Closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FLOPPY DRIVE CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Drives installed  |       SW1/7        |      SW1/8       |
   |--------------------+--------------------+------------------|
   |         1          |     (8) 41256      |       NONE       |
   |--------------------+--------------------+------------------|
   |         2          |     (8) 41256      |       NONE       |
   |--------------------+--------------------+------------------|
   |         3          |      (8) 4164      |       NONE       |
   |--------------------+--------------------+------------------|
   |         4          |      (8) 4164      |       NONE       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   MONITOR CONFIGURATION                    |
   |------------------------------------------------------------|
   |        Type        |       SW1/5       |       SW1/6       |
   |--------------------+-------------------+-------------------|
   |        MGA         |        Off        |        Off        |
   |--------------------+-------------------+-------------------|
   |        CGA         |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |        EGA         |        On         |        On         |
   +------------------------------------------------------------+