AMPRO COMPUTERS, INC.
=====================

   LITTLE BOARD/PC

   Processor        8088                                          
   Processor Speed  7MHz                                          
   Chip Set         Unidentified                                  
   Video Chip Set   None                                          
   Maximum Onboard  640KB                                         
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            None                                          
   BIOS             Ampro                                         
   Dimensions       203mm x 146mm                                 
   I/O Options      Floppy drive interface, SCSI connector,       
                    parallel port, serial ports (2), PC bus       
                    interface                                     
   NPU Options      NEC uPD72191                                  

<gopher://bitreich.org/I/th99/m/A-B/33643-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Serial port (V40) |    J2    | Keyboard         |    J5    |
   |                   |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | Serial port       |    J3    | Parallel port    |    J6    |
   |-------------------+----------+------------------+----------|
   | Speaker           | J4 pins  | SCSI interface   |    J7    |
   |                   |  1 & 2   |                  |          |
   |-------------------+----------+------------------+----------|
   | Reset switch      | J4 pins  | Floppy drive     |    J8    |
   |                   |  3 & 4   | interface        |          |
   |-------------------+----------+------------------+----------|
   | Power LED         | J4 pins  | PC bus interface |    J9    |
   |                   |  5 & 6   |                  |          |
   |-------------------+----------+------------------+----------|
   | Auxiliary power   | J4 pins  |                  |          |
   | for PC bus        |  7 - 10  |                  |          |
   | connector         |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | DMA END (TC) signal disabled    |  W1   |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | DMA END (TC) signal enabled     |  W1   |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | 5v termination power to pin 26  |  W4   |     Open     |
   |   | of SCSI disabled                |       |              |
   |---+---------------------------------+-------+--------------|
   |   | 5v termination power to pin 26  |  W4   |    Closed    |
   |   | of SCSI enabled                 |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | PC bus IRQ5 disabled            |  W6   |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | PC bus IRQ5 enabled             |  W6   |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W9   |     Open     |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Floppy drive IRQ6 enabled       |  W10  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | Floppy drive IRQ6 disabled      |  W10  |     Open     |
   |---+---------------------------------+-------+--------------|
   |>> | Parallel port LPT select LPT1   |  W11  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | Parallel port LPT select LPT2   |  W11  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W21  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W22  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W26  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W27  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W28  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | NPU not installed               |  W30  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | NPU installed                   |  W30  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Monitor type select CGA         |  W31  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | Monitor type select monochrome  |  W31  |     Open     |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W34  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Write precomp speed select      |  W39  |     Open     |
   |   | 125ns                           |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Write precomp speed select      |  W39  |    Closed    |
   |   | 187ns                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Drive speed select single speed |  W40  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | Drive speed select dual speed   |  W40  |    Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size   |     Bank 0     |     Bank 1     |     Bank 2     |
   |---------+----------------+----------------+----------------|
   |  256KB  | SIMM installed |      None      |      None      |
   |---------+----------------+----------------+----------------|
   |  512KB  | SIMM installed | SIMM installed |      None      |
   |---------+----------------+----------------+----------------|
   |  640KB  | SIMM installed | SIMM installed | SIMM installed |
   |------------------------------------------------------------|
   | Note: The size of the DRAM chips are unidentified.         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |       Size        |        W19         |        W20        |
   |-------------------+--------------------+-------------------|
   |       256KB       |       Closed       |      Closed       |
   |-------------------+--------------------+-------------------|
   |       512KB       |        Open        |      Closed       |
   |-------------------+--------------------+-------------------|
   |       640KB       |       Closed       |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PROM SOCKET SELECTION (U26)                 |
   |------------------------------------------------------------|
   |    Type    | Address  |   W35   |  W36   |  W37   |  W38   |
   |------------+----------+---------+--------+--------+--------|
   |>> | Empty  |   N/A    |  Open   |  Open  |  Open  |  N/A   |
   |---+--------+----------+---------+--------+--------+--------|
   |   |  2764  |  E0000h  |  Open   |  Open  | Closed |  Open  |
   |---+--------+----------+---------+--------+--------+--------|
   |   |  2764  |  E4000h  | Closed  | Closed |  Open  |  Open  |
   |---+--------+----------+---------+--------+--------+--------|
   |   |  2764  |  E8000h  |  Open   | Closed |  Open  |  Open  |
   |---+--------+----------+---------+--------+--------+--------|
   |   |  2764  |  EC000h  | Closed  |  Open  |  Open  |  Open  |
   |---+--------+----------+---------+--------+--------+--------|
   |   | 27256  |  E0000h  |  Open   | Closed | Closed | Closed |
   |---+--------+----------+---------+--------+--------+--------|
   |   | 27256  |  E8000h  | Closed  |  Open  | Closed | Closed |
   |---+--------+----------+---------+--------+--------+--------|
   |   | 27512  |  E0000h  | Closed  | Closed | Closed | Closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  MEMORY OPTION SELECTION                   |
   |------------------------------------------------------------|
   |   Type   |  W8   |  W12  | W13 |  W14  | W15  | W16  | W41 |
   |----------+-------+-------+-----+-------+------+------+-----|
   |>> | None  | Open  | Open  |Open | Open  | Open | Open |Open |
   |--+-------+-------+-------+-----+-------+------+------+-----|
   |  | 2764  |Closed |Closed |Open | Open  | Open | Open |2 & 3|
   |--+-------+-------+-------+-----+-------+------+------+-----|
   |  | 27256 | Open  |Closed |Open |Closed |Closed| Open |2 & 3|
   |--+-------+-------+-------+-----+-------+------+------+-----|
   |  | 6264  |Closed |Closed |Open | Open  | Open |Closed|Open |
   |--+-------+-------+-------+-----+-------+------+------+-----|
   |  | 62256 | Open  |Closed |Open |Closed | Open |Closed|1 & 2|
   |------------------------------------------------------------|
   |Note: Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                FLOPPY DMA CHANNEL SELECTION                |
   |------------------------------------------------------------|
   |     Channel      |         W5         |         W7         |
   |------------------+--------------------+--------------------|
   |    |      1      | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |----+-------------+--------------------+--------------------|
   |>>  |      2      | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SCSI DMA CHANNEL SELECTION                 |
   |------------------------------------------------------------|
   |     Channel      |         W2         |         W3         |
   |------------------+--------------------+--------------------|
   |    |      1      | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   |----+-------------+--------------------+--------------------|
   |>>  |      3      | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               SERIAL PORT ADDRESS SELECTION                |
   |------------------------------------------------------------|
   |    Setting     | Address | IRQ  |  W17   |  W18   |  W29   |
   |----------------+---------+------+--------+--------+--------|
   |>> |    COM1    | 3F8h -  | IRQ4 | Closed |  Open  |  Open  |
   |   |   (3F8h)   |   3FF   |      |        |        |        |
   |---+------------+---------+------+--------+--------+--------|
   |   |    COM2    | 2F8h -  | IRQ3 |  Open  | Closed | Closed |
   |   |   (2F8h)   |   2FF   |      |        |        |        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   FLOPPY DRIVE SELECTION                   |
   |------------------------------------------------------------|
   |  Drives installed  |        W32        |        W33        |
   |--------------------+-------------------+-------------------|
   |         1          |      Closed       |      Closed       |
   |--------------------+-------------------+-------------------|
   |         2          |      Closed       |       Open        |
   |--------------------+-------------------+-------------------|
   | 3 (not supported)  |       Open        |      Closed       |
   |--------------------+-------------------+-------------------|
   | 4 (not supported)  |       Open        |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   SCSI BUS ID SELECTION                    |
   |------------------------------------------------------------|
   |      ID      |      W23      |     W24      |     W25      |
   |--------------+---------------+--------------+--------------|
   |   |    0     |    Closed     |    Closed    |    Closed    |
   |---+----------+---------------+--------------+--------------|
   |   |    1     |     Open      |    Closed    |    Closed    |
   |---+----------+---------------+--------------+--------------|
   |   |    2     |    Closed     |     Open     |    Closed    |
   |---+----------+---------------+--------------+--------------|
   |   |    3     |     Open      |     Open     |    Closed    |
   |---+----------+---------------+--------------+--------------|
   |   |    4     |    Closed     |    Closed    |     Open     |
   |---+----------+---------------+--------------+--------------|
   |   |    5     |     Open      |    Closed    |     Open     |
   |---+----------+---------------+--------------+--------------|
   |   |    6     |    Closed     |     Open     |     Open     |
   |---+----------+---------------+--------------+--------------|
   |>> |    7     |     Open      |     Open     |     Open     |
   +------------------------------------------------------------+