PC'S LIMITED, INC.
==================

   TURBO PC

   Processor             8088-2                                   
   Processor Speed       7.33MHz                                  
   Chip Set              None                                     
   Max. Onboard DRAM     640KB                                    
   Cache                 None                                     
   BIOS                  PC's Ltd.                                
   Dimensions            355mm x 304mm                            
   I/O Options           None                                     
   NPU Options           8087                                     

<gopher://bitreich.org/I/th99/m/P-R/30496-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |   Purpose   | Location |        Purpose         | Location |
   |-------------+----------+------------------------+----------|
   | Speaker     |    J2    | Reset switch           |   JP1    |
   |-------------+----------+------------------------+----------|
   | Turbo LED & |    J3    | Alternate DC power     |    P3    |
   | Power LED   |          | plug                   |          |
   |------------------------------------------------------------|
   | Note:P3 may not be present on all boards.                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |   | Factory configured - do   |      J5       |    Open    |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | CPU speed select fast     |      J6       | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | CPU speed select slow     |      J6       | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Self-test disabled        |     SW2/1     |     On     |
   |---+---------------------------+---------------+------------|
   |   | Self-test enabled         |     SW2/1     |    Off     |
   |---+---------------------------+---------------+------------|
   |>> | NPU disabled              |     SW2/2     |     On     |
   |---+---------------------------+---------------+------------|
   |   | NPU enabled               |     SW2/2     |    Off     |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW2/4     |    Off     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |   | Color adjust              |      VC1      |  Variable  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
   |------------+---------------+---------------+---------------|
   |   256KB    |   (9) 41256   |     NONE      |     NONE      |
   |------------+---------------+---------------+---------------|
   |   640KB    |   (9) 41256   |   (9) 41256   |   (18) 4164   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |            Size            |              J4               |
   |----------------------------+-------------------------------|
   |           256KB            |       pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |           640KB            |       pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   | Size |SW2/3|SW3/1|SW3/2|SW3/3|SW3/4|SW3/5|SW3/6|SW3/7|SW3/8|
   |------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |256KB | On  | On  | Off | On  | Off | On  | Off | On  | Off |
   |------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |640KB | Off | Off | On  | Off | On  | Off | On  | Off | On  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             DRAM SWITCH CONFIGURATION (CON'T)              |
   |------------------------------------------------------------|
   | Size |SW4/1 |SW4/2 |SW4/3 |SW4/4 |SW4/5 |SW4/6 |SW4/7|SW4/8|
   |------+------+------+------+------+------+------+-----+-----|
   |256KB |  On  | Off  |  On  | Off  |  On  | Off  | On  | Off |
   |------+------+------+------+------+------+------+-----+-----|
   |640KB | Off  |  On  | Off  |  On  | Off  |  On  | Off | On  |
   +------------------------------------------------------------+

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

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