INFORMTECH INTERNATIONAL, INC.
==============================

   286/SUPRA (MODEL B)

   Processor        80286                                         
   Processor Speed  6/8/10/12/16/20MHz                            
   Chip Set         C & T                                         
   Max. Onboard     4MB                                           
   DRAM             
   SRAM Cache       None                                          
   BIOS             Award                                         
   Dimensions       330mm x 218mm                                 
   I/O Options      16-bit external memory card slot, auxillary   
                    keyboard connector                            
   NPU Options      80287                                         

<gopher://bitreich.org/I/th99/m/I-L/31259-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Auxiliary     |    J9    | Power LED & keylock  |    P5    |
   | keyboard      |          |                      |          |
   |---------------+----------+----------------------+----------|
   | Turbo LED     |    P2    | External battery     |    P8    |
   |---------------+----------+----------------------+----------|
   | Speaker       |    P3    | 16-bit external      |    S1    |
   |               |          | memory card          |          |
   |---------------+----------+----------------------+----------|
   | Reset switch  |    P4    |                      |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |   | BIOS type select 27256    |      J4       | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | BIOS type select 27128    |      J4       | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Keyboard controller clock |      J5       | pins 1 & 2 |
   |   | speed select 6MHz         |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Keyboard controller clock |      J5       | pins 2 & 3 |
   |   | speed select 12MHz        |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Battery type select       |      J7       |   closed   |
   |   | Alkaline 4.5VDC           |               |            |
   |---+---------------------------+---------------+------------|
   |   | Battery type select       |      J7       |    open    |
   |   | Lithium 6VDC              |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Power good signal detect  |      J8       | pins 2 & 3 |
   |   | from power supply         |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Power good signal detect  |      J8       | pins 1 & 2 |
   |   | from board                |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select color | SW1/Switch 3  |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select       | SW1/Switch 3  |    open    |
   |   | monochrome                |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             CPU SPEED/BUS CLOCK CONFIGURATION              |
   |------------------------------------------------------------|
   |  CPU   | AT Bus  |  J2   |  J3   |  J10  |  J13   |  J14   |
   | Speed  |  Speed  |       |       |       |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 20MHz  |  8MHz   | pins  | pins  | pins  |  open  |  open  |
   |        |         | 1 & 2 | 1 & 2 | 2 & 3 |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 20MHz  |  10MHz  |  N/A  | pins  | pins  | closed |  open  |
   |        |         |       | 1 & 2 | 2 & 3 |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 20MHz  |  12MHz  | pins  | pins  | pins  |  open  |  open  |
   |        |         | 2 & 3 | 1 & 2 | 2 & 3 |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 16MHz  |  8MHz   | pins  | pins  | pins  |  open  |  open  |
   |        |         | 1 & 2 | 1 & 2 | 1 & 2 |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 16MHz  |  12MHz  | pins  | pins  | pins  |  open  |  open  |
   |        |         | 2 & 3 | 1 & 2 | 1 & 2 |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 12MHz  |  6MHz   |  N/A  | pins  |  N/A  | closed |  open  |
   |        |         |       | 2 & 3 |       |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 12MHz  |  8MHz   | pins  | pins  |  N/A  |  open  |  open  |
   |        |         | 1 & 2 | 2 & 3 |       |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 12MHz  |  12MHz  | pins  |  N/A  |  N/A  |  open  | closed |
   |        |         | 2 & 3 |       |       |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   | 10MHz  |  10MHz  |  N/A  | pins  | pins  | closed | closed |
   |        |         |       | 1 & 2 | 2 & 3 |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   |  8MHz  |  8MHz   | pins  |  N/A  |  N/A  |  open  | closed |
   |        |         | 1 & 2 |       |       |        |        |
   |--------+---------+-------+-------+-------+--------+--------|
   |  6MHz  |  6MHz   |  N/A  | pins  |  N/A  | closed | closed |
   |        |         |       | 2 & 3 |       |        |        |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               NPU CLOCK RATE CONFIGUARATION                |
   |------------------------------------------------------------|
   |  NPU Speed  |  Clock Rate  | SW1/Switch 1  | SW1/Switch 2  |
   |-------------+--------------+---------------+---------------|
   |   80287-8   |     6MHz     |    closed     |    closed     |
   |-------------+--------------+---------------+---------------|
   |   80287-8   |     8MHz     |    closed     |     open      |
   |-------------+--------------+---------------+---------------|
   |  80287-10   |    10MHz     |     open      |    closed     |
   |-------------+--------------+---------------+---------------|
   |  80287-12   |    12MHz     |     open      |     open      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size   |    Bank 0    |    Bank 1    |   J11    |   J12   |
   |---------+--------------+--------------+----------+---------|
   |  512KB  | (2) 256K x 9 |     NONE     |   open   |  open   |
   |---------+--------------+--------------+----------+---------|
   |   1MB   | (2) 256K x 9 | (2) 256K x 9 |  closed  |  open   |
   |---------+--------------+--------------+----------+---------|
   |   2MB   |  (2) 1M x 9  |     NONE     |   open   | closed  |
   |---------+--------------+--------------+----------+---------|
   |   4MB   |  (2) 1M x 9  |  (2) 1M x 9  |  closed  | closed  |
   +------------------------------------------------------------+