DIGITAL EQUIPMENT CORPORATION
=============================

   PC 2230 CE

   Processor        80286                                         
   Processor Speed  12MHz                                         
   Chip Set         Unidentified                                  
   Video Chip Set   ATI                                           
   Maximum Onboard  4MB                                           
   Memory           
   Maximum Video    64KB                                          
   Memory           
   Cache            None                                          
   BIOS             Unidentified                                  
   Dimensions       238mm x 228mm                                 
   I/O Options      Floppy drive interface, IDE interface,        
                    parallel port, serial ports (2), VGA port,    
                    riser slot                                    
   NPU Options      80287                                         

<gopher://bitreich.org/I/th99/m/C-D/33994-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose              | Location | Purpose       | Location |
   |----------------------+----------+---------------+----------|
   | Floppy/hard drive    |    J5    | Serial port   |   J10    |
   | power interface      |          |               |          |
   |----------------------+----------+---------------+----------|
   | IDE interface        |    J6    | Parallel port |   J11    |
   |----------------------+----------+---------------+----------|
   | Floppy drive         |    J7    | VGA port      |   J12    |
   | interface            |          |               |          |
   |----------------------+----------+---------------+----------|
   | Serial port          |    J9    | Riser slot    |   SL1    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function                | Label |  Position  |
   |---------------------------------------+-------+------------|
   |   | SIMM type select 256KB            |  W6   |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | SIMM type select 1MB              |  W6   |   Closed   |
   |---+-----------------------------------+-------+------------|
   |>> | BIOS type select 27256            |  W8   |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | BIOS type select 27128            |  W8   |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Shadow RAM enabled                |  W9   |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Shadow RAM disabled               |  W9   |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | SIMM type select all same type    |  W18  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | SIMM type select mixed SIMMs      |  W18  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Keyboard clock speed select 8MHz  |  W22  | Pins 1 & 2 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | Keyboard clock speed select 4MHz  |  W22  | Pins 2 & 3 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Burn in mode not disabled         |  W26  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Burn in mode enabled              |  W26  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Manufacturing mode disabled       |  W27  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Manufacturing mode enabled        |  W27  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Floppy drive interface enabled    |  W28  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Floppy drive interface disabled   |  W28  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Video type select normal          |  W29  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Video type select slow            |  W29  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | Speaker volume select high        |  W30  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Speaker volume select low         |  W30  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |>> | 60ns CAS enabled                  |  W31  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | 60ns CAS disabled                 |  W31  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | I/O half speed enabled            |  W33  | Pins 1 & 2 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | I/O half speed disabled           |  W33  | Pins 2 & 3 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | Monitor type select color         | S1/1  |     On     |
   |---+-----------------------------------+-------+------------|
   |   | Monitor type select monochrome    | S1/1  |    Off     |
   |---+-----------------------------------+-------+------------|
   |   | Monochrome mode using a color     | S1/2  |     On     |
   |   | monitor                           |       |            |
   |---+-----------------------------------+-------+------------|
   |   | Color mode using a monochrome     | S1/2  |    Off     |
   |   | monitor                           |       |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size  |   Bank 0   |   Bank 1   |   Bank 2   |   Bank 3   |
   |--------+------------+------------+------------+------------|
   | 256KB  | (1) 256K x |    None    |    None    |    None    |
   |        |     9      |            |            |            |
   |--------+------------+------------+------------+------------|
   | 512KB  | (1) 256K x | (1) 256K x |    None    |    None    |
   |        |     9      |     9      |            |            |
   |--------+------------+------------+------------+------------|
   | 768KB  | (1) 256K x | (1) 256K x | (1) 256K x |    None    |
   |        |     9      |     9      |     9      |            |
   |--------+------------+------------+------------+------------|
   |  1MB   | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
   |        |     9      |     9      |     9      |     9      |
   |--------+------------+------------+------------+------------|
   |  1MB   | (1) 1M x 9 |    None    |    None    |    None    |
   |--------+------------+------------+------------+------------|
   | 1.2MB  | (1) 1M x 9 | (1) 256K x |    None    |    None    |
   |        |            |     9      |            |            |
   |--------+------------+------------+------------+------------|
   | 1.5MB  | (1) 1M x 9 | (1) 256K x | (1) 256K x |    None    |
   |        |            |     9      |     9      |            |
   |--------+------------+------------+------------+------------|
   | 1.79MB | (1) 1M x 9 | (1) 256K x | (1) 256K x | (1) 256K x |
   |        |            |     9      |     9      |     9      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   |  Size  |   Bank 0   |   Bank 1   |   Bank 2   |   Bank 3   |
   |--------+------------+------------+------------+------------|
   |  2MB   | (1) 1M x 9 | (1) 1M x 9 |    None    |    None    |
   |--------+------------+------------+------------+------------|
   | 2.28MB | (1) 1M x 9 | (1) 1M x 9 | (1) 256K x |    None    |
   |        |            |            |     9      |            |
   |--------+------------+------------+------------+------------|
   | 2.5MB  | (1) 1M x 9 | (1) 1M x 9 | (1) 256K x | (1) 256K x |
   |        |            |            |     9      |     9      |
   |--------+------------+------------+------------+------------|
   |  3MB   | (1) 1M x 9 | (1) 1M x 9 | (1) 1M x 9 |    None    |
   |--------+------------+------------+------------+------------|
   |  4MB   | (1) 1M x 9 | (1) 1M x 9 | (1) 1M x 9 | (1) 1M x 9 |
   |------------------------------------------------------------|
   | Note: The location of banks 0, 1, 2, & 3 is unidentified.  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DRAM JUMPER SELECTION                    |
   |------------------------------------------------------------|
   |  SIMMS installed   |        W16        |        W17        |
   |--------------------+-------------------+-------------------|
   |         1          |       Open        |       Open        |
   |--------------------+-------------------+-------------------|
   |         2          |       Open        |      Closed       |
   |--------------------+-------------------+-------------------|
   |         3          |      Closed       |       Open        |
   |--------------------+-------------------+-------------------|
   |         4          |      Closed       |      Closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DRAM SPEED SELECTION                    |
   |------------------------------------------------------------|
   |       Speed       |        W13         |        W14        |
   |-------------------+--------------------+-------------------|
   |       100ns       |        Open        |      Closed       |
   |-------------------+--------------------+-------------------|
   |       120ns       |       Closed       |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 VIDEO MEMORY CONFIGURATION                 |
   |------------------------------------------------------------|
   | Note: The location of the 64KB video memory is             |
   | unidentified.                                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  ONBOARD VIDEO SELECTION                   |
   |------------------------------------------------------------|
   |        Setting         |       W10       |       W21       |
   |------------------------+-----------------+-----------------|
   |>> |      Enabled       |     Closed      |     Closed      |
   |---+--------------------+-----------------+-----------------|
   |   |      Disabled      |      Open       |      Open       |
   |---+--------------------+-----------------+-----------------|
   |   |      Disabled      |      Open       |     Closed      |
   |---+--------------------+-----------------+-----------------|
   |   |      Disabled      |     Closed      |      Open       |
   +------------------------------------------------------------+