AMERICAN DIGICOM CORPORATION
============================

   DIGIS-286C

   Processor         80286 (exact location unknown)               
   Processor Speed   12MHz                                        
   Chip Set          Suntac                                       
   Max. Onboard DRAM 4MB                                          
   Cache             None                                         
   BIOS              Award/Phoenix                                
   Dimensions        330mm x 218mm                                
   I/O Options       None                                         
   NPU Options       None                                         

<gopher://bitreich.org/I/th99/m/A-B/32288-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Speaker             |   J19    | Turbo LED      |   JP4    |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |   J20    | Turbo switch   |   JP5    |
   |---------------------+----------+----------------+----------|
   | External battery    |   J21    | Reset switch   |   JP6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | CPU clock speed select    |    DSP1/1     |     On     |
   |   | high                      |               |            |
   |---+---------------------------+---------------+------------|
   |   | CPU clock speed select    |    DSP1/1     |    Off     |
   |   | low                       |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |    DSP1/2     |     On     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | I/O wait state select 4   |    DSP1/3     |     On     |
   |   | wait states               |               |            |
   |---+---------------------------+---------------+------------|
   |   | I/O wait state select 6   |    DSP1/3     |    Off     |
   |   | wait states               |               |            |
   |---+---------------------------+---------------+------------|
   |>> | EMS port address select   |    DSP1/4     |     On     |
   |   | 0EBH                      |               |            |
   |---+---------------------------+---------------+------------|
   |   | EMS port address select   |    DSP1/4     |    Off     |
   |   | 098H                      |               |            |
   |---+---------------------------+---------------+------------|
   |>> | RAM size select 256KB     |      J18      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | RAM size select 512KB     |      J18      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | CPU clock speed select    |      JP1      |    Open    |
   |   | high                      |               |            |
   |---+---------------------------+---------------+------------|
   |   | CPU clock speed select    |      JP1      | pins 2 & 3 |
   |   | low                       |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | I/O wait control select   |      JP3      | pins 1 & 2 |
   |   | keyboard                  |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | I/O wait control select   |      JP3      | pins 2 & 3 |
   |   | DSP1/3                    |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Turbo enabled             |      JP4      |   Closed   |
   |---+---------------------------+---------------+------------|
   |   | Turbo disabled            |      JP4      |    Open    |
   |---+---------------------------+---------------+------------|
   |>> | BIOS type select Phoenix  |      JP7      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | BIOS type select Award    |      JP7      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | DRAM mode select expanded |      JP8      |    Open    |
   |---+---------------------------+---------------+------------|
   |   | DRAM mode select extended |      JP8      |   Closed   |
   |---+---------------------------+---------------+------------|
   |>> | DRAM wait state select 1  |     JP19      |    Open    |
   |   | wait state                |               |            |
   |---+---------------------------+---------------+------------|
   |   | DRAM wait state select 0  |     JP19      |   Closed   |
   |   | wait states               |               |            |
   |------------------------------------------------------------|
   | Note: The location of DSP1 is unknown.                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |Mode | Size |Base |Extended|Expanded|  Bank 0   |  Bank 1   |
   |-----+------+-----+--------+--------+-----------+-----------|
   |  0  |512KB |512KB|  0KB   |  0KB   |(18) 41256 |   NONE    |
   |-----+------+-----+--------+--------+-----------+-----------|
   |  1  |640KB |640KB|  0KB   |  0KB   |(18) 41256 | (18) 4164 |
   |-----+------+-----+--------+--------+-----------+-----------|
   |  2  | 1MB  |640KB| 384KB  |  0KB   |(18) 41256 |(18) 41256 |
   |-----+------+-----+--------+--------+-----------+-----------|
   |  3  | 1MB  |640KB|  0KB   | 384KB  |(18) 41256 |(18) 41256 |
   |-----+------+-----+--------+--------+-----------+-----------|
   |  4  | 2MB  |640KB| 1408KB |  0KB   |(18) 411000|   NONE    |
   |-----+------+-----+--------+--------+-----------+-----------|
   |  5  | 2MB  |640KB|  0KB   | 1408KB |(18) 411000|   NONE    |
   |-----+------+-----+--------+--------+-----------+-----------|
   |  6  | 4MB  |640KB| 3456KB |  0KB   |(18) 411000|(18) 411000|
   |-----+------+-----+--------+--------+-----------+-----------|
   |  7  | 4MB  |640KB|  0KB   | 3456KB |(18) 411000|(18) 411000|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   |    Mode     |    DSP1/6     |    DSP1/7     |    DSP1/8    |
   |-------------+---------------+---------------+--------------|
   |      0      |      On       |      On       |      On      |
   |-------------+---------------+---------------+--------------|
   |      1      |      On       |      On       |     Off      |
   |-------------+---------------+---------------+--------------|
   |      2      |      On       |      Off      |      On      |
   |-------------+---------------+---------------+--------------|
   |      3      |      On       |      Off      |     Off      |
   |-------------+---------------+---------------+--------------|
   |      4      |      Off      |      On       |      On      |
   |-------------+---------------+---------------+--------------|
   |      5      |      Off      |      On       |     Off      |
   |-------------+---------------+---------------+--------------|
   |      6      |      Off      |      Off      |      On      |
   |-------------+---------------+---------------+--------------|
   |      7      |      Off      |      Off      |     Off      |
   |------------------------------------------------------------|
   | Note: The location of DSP1 is unknown.                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size        |      DSP1/5       |        JP9         |
   |-------------------+-------------------+--------------------|
   |       27128       |        On         | pins 1 & 2 closed  |
   |-------------------+-------------------+--------------------|
   |       27256       |        Off        | pins 2 & 3 closed  |
   +------------------------------------------------------------+