AMERICAN RESEARCH CORPORATION
=============================

   X TURBO

   Processor         8088                                         
   Processor Speed   4/6MHz                                       
   Chip Set          Unidentified                                 
   Max. Onboard DRAM 640KB                                        
   Cache             None                                         
   BIOS              Unidentified                                 
   Dimensions        330mm x 218mm                                
   I/O Options       Proprietary slots (2)                        
   NPU Options       8087                                         

<gopher://bitreich.org/I/th99/m/A-B/32844-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose                       |          Location          |
   |-------------------------------+----------------------------|
   | Proprietary slots             |         SL1 - SL2          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function             |  Switch   |  Position   |
   |----------------------------------+-----------+-------------|
   |>> | Turbo enabled                |   SW2/1   |     Off     |
   |---+------------------------------+-----------+-------------|
   |   | Turbo disabled               |   SW2/1   |     On      |
   |---+------------------------------+-----------+-------------|
   |>> | NPU disabled                 |   SW2/2   |     On      |
   |---+------------------------------+-----------+-------------|
   |   | NPU enabled                  |   SW2/2   |     Off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size   |   Bank 0   |   Bank 1   |   Bank 2   |  Bank 3   |
   |---------+------------+------------+------------+-----------|
   |  64KB   |  (9) 4164  |    NONE    |    NONE    |   NONE    |
   |---------+------------+------------+------------+-----------|
   |  128KB  |  (9) 4164  |  (9) 4164  |    NONE    |   NONE    |
   |---------+------------+------------+------------+-----------|
   |  192KB  |  (9) 4164  |  (9) 4164  |  (9) 4164  |   NONE    |
   |---------+------------+------------+------------+-----------|
   |  256KB  |  (9) 4164  |  (9) 4164  |  (9) 4164  | (9) 4164  |
   |---------+------------+------------+------------+-----------|
   |  256KB  | (9) 41256  |    NONE    |    NONE    |   NONE    |
   |---------+------------+------------+------------+-----------|
   |  640KB  | (9) 41256  | (9) 41256  |  (9) 4164  | (9) 4164  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   |        Size        |       SW2/3       |       SW2/4       |
   |--------------------+-------------------+-------------------|
   |        64KB        |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |       128KB        |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |       192KB        |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |       256KB        |        Off        |        Off        |
   |--------------------+-------------------+-------------------|
   |       640KB        |        Off        |        Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   |    Size    |SW3/1|SW3/2|SW3/3|SW3/4|SW3/5|SW3/6|SW3/7|SW3/8|
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |Bank 0 & 1 =| Off | On  | Off | On  | Off | On  | Off | On  |
   |   41256    |     |     |     |     |     |     |     |     |
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |Bank 2 & 3 =| Off | On  | Off | On  | Off | On  | Off | On  |
   |    4164    |     |     |     |     |     |     |     |     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             DRAM SWITCH CONFIGURATION (CON'T)              |
   |------------------------------------------------------------|
   |    Size    |SW4/1|SW4/2|SW4/3|SW4/4|SW4/5|SW4/6|SW4/7|SW4/8|
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |Bank 0 & 1 =| Off | On  | Off | On  | Off | On  | Off | On  |
   |   41256    |     |     |     |     |     |     |     |     |
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |Bank 2 & 3 =| Off | On  | Off | On  | Off | On  | Off | On  |
   |    4164    |     |     |     |     |     |     |     |     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   |    Size    |SW3/1|SW3/2|SW3/3|SW3/4|SW3/5|SW3/6|SW3/7|SW3/8|
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |Bank 0 & 1 =| On  | Off | On  | Off | On  | Off | On  | Off |
   |    4164    |     |     |     |     |     |     |     |     |
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |Bank 2 & 3 =| On  | Off | On  | Off | On  | Off | On  | Off |
   |    4164    |     |     |     |     |     |     |     |     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             DRAM SWITCH CONFIGURATION (CON'T)              |
   |------------------------------------------------------------|
   |    Size    |SW4/1|SW4/2|SW4/3|SW4/4|SW4/5|SW4/6|SW4/7|SW4/8|
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |Bank 0 & 1 =| On  | Off | On  | Off | On  | Off | On  | Off |
   |    4164    |     |     |     |     |     |     |     |     |
   |------------+-----+-----+-----+-----+-----+-----+-----+-----|
   |Bank 2 & 3 =| On  | Off | On  | Off | On  | Off | On  | Off |
   |    4164    |     |     |     |     |     |     |     |     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   MONITOR CONFIGURATION                    |
   |------------------------------------------------------------|
   |        Type        |       SW2/5       |       SW2/6       |
   |--------------------+-------------------+-------------------|
   |     Monochrome     |        Off        |        Off        |
   |--------------------+-------------------+-------------------|
   |   40 x 25 color    |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |   80 x 25 color    |        On         |        Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FLOPPY DRIVE CONFIGURATION                 |
   |------------------------------------------------------------|
   |       Type        |       SW2/7        |       SW2/8       |
   |-------------------+--------------------+-------------------|
   |         1         |         On         |        On         |
   |-------------------+--------------------+-------------------|
   |         2         |        Off         |        On         |
   |-------------------+--------------------+-------------------|
   |         3         |         On         |        Off        |
   |-------------------+--------------------+-------------------|
   |         4         |        Off         |        Off        |
   +------------------------------------------------------------+