MANDAX COMPUTER, INC.
=====================

   286 MAINBOARD

   Processor          80286                                       
   Processor Speed    6/12MHz                                     
   Chip Set           Unknown                                     
   Max. Onboard DRAM  4MB                                         
   SRAM Cache         None                                        
   BIOS               AMI                                         
   Dimensions         330.2mm x 218.4mm                           
   I/O Options        None                                        
   NPU Options        80287                                       

<gopher://bitreich.org/I/th99/m/M-O/31167-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose               | Location | Purpose      | Location |
   |-----------------------+----------+--------------+----------|
   | Digital CPU speed     |    J1    | Speaker      |   JP7    |
   | display               |          |              |          |
   |-----------------------+----------+--------------+----------|
   | External battery      |   J15    | Turbo LED    |   JP10   |
   |-----------------------+----------+--------------+----------|
   | Power LED & keylock   |   JP4    | Reset switch |   JP11   |
   |-----------------------+----------+--------------+----------|
   | Turbo switch          |   JP5    |              |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | Monitor type select       |      JP1      | pins 1 & 2 |
   |   | monochrome                |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select color |      JP1      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | NPU disabled              |      JP2      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | NPU enabled               |      JP2      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |      JP3      |   closed   |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | RTC type select alkaline  |      JP6      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | RTC type select lithium   |      JP6      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | I/O speed select 6MHz     |      JP8      |    open    |
   |---+---------------------------+---------------+------------|
   |   | I/O speed select          |      JP8      |   closed   |
   |   | synchronous with CPU      |               |            |
   |   | clock                     |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Wait states select        |      JP9      | pins 1 & 2 |
   |   | switchable at keyboard    |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Wait state select one     |      JP9      |    open    |
   |---+---------------------------+---------------+------------|
   |   | Wait states select zero   |      JP9      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | BIOS type select 27256    |     JP12      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | BIOS type select 27512    |     JP12      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Monitor type select       | SW1/switch 1  |    open    |
   |   | monochrome                |               |            |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select color | SW1/switch 1  |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |Size |  Bank 0  |  Bank 1  |SW1/switch|SW1/switch|SW1/switch|
   |     |          |          |    2     |    3     |    4     |
   |-----+----------+----------+----------+----------+----------|
   |512KB|(18) 41256|   NONE   |  closed  |  closed  |   open   |
   |-----+----------+----------+----------+----------+----------|
   |640KB|(18) 41256|(18) 4164 |  closed  |   open   |  closed  |
   |-----+----------+----------+----------+----------+----------|
   | 1MB |(18) 41256|(18) 41256|  closed  |   open   |   open   |
   |-----+----------+----------+----------+----------+----------|
   | 2MB |   (18)   |   NONE   |   open   |   open   |  closed  |
   |     |  411000  |          |          |          |          |
   |-----+----------+----------+----------+----------+----------|
   | 4MB |   (18)   |   (18)   |   open   |   open   |   open   |
   |     |  411000  |  411000  |          |          |          |
   +------------------------------------------------------------+