PC BRAND
========

   HI-PERFORMANCE SYSTEM

   Processor    80386DX/80486SX/80486DX (depends on CPU card      
                installed)                                        
   Processor    20/33MHz                                          
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 32MB                                              
   DRAM         
   Cache        64/128/256KB (on external CPU card)               
   BIOS         Unidentified                                      
   Dimensions   330mm x 218mm                                     
   I/O Options  Parallel port, serial ports (2), floppy drive     
                interface, IDE interface, CPU expansion slot,     
                riser slot                                        
   NPU Options  80387DX                                           

<gopher://bitreich.org/I/th99/m/P-R/32902-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |    J2    | External battery |   J10    |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |    J3    | Speaker          |   J13    |
   |-------------------+----------+------------------+----------|
   | Parallel port     |    J4    | Power LED &      |   J23    |
   |                   |          | keylock          |          |
   |-------------------+----------+------------------+----------|
   | Auxiliary speaker |    J5    | Riser Card       |   SL1    |
   |-------------------+----------+------------------+----------|
   | IDE interface     |    J8    | CPU expansion    |   SL2    |
   |                   |          | slot             |          |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |    J9    | Reset switch     |   SW1    |
   | interface         |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Factory configured - do not      |  J11   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | On board RAM 256KB to 640KB      |  JP1   | pins 1 & 2 |
   |   | enabled                          |        |    open    |
   |---+----------------------------------+--------+------------|
   |   | On board RAM 256KB to 640KB      |  JP1   | pins 1 & 2 |
   |   | disabled                         |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | On board RAM 512KB to 640KB      |  JP1   | pins 3 & 4 |
   |   | enabled                          |        |    open    |
   |---+----------------------------------+--------+------------|
   |   | On board RAM 512KB to 640KB      |  JP1   | pins 3 & 4 |
   |   | disabled                         |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Security lock disabled           |  JP1   | pins 5 & 6 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Security lock enabled            |  JP1   | pins 5 & 6 |
   |   |                                  |        |    open    |
   |---+----------------------------------+--------+------------|
   |>> | Floppy drive interface enabled   |  JP2   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Floppy drive interface disabled  |  JP2   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/m/P-R/32902-2.png>
   

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    32KB    |  (4) 8K x 8   |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |    Size    |          JP2          |          JP3          |
   |------------+-----------------------+-----------------------|
   |    32KB    |   pins 1 & 2 closed   |   pins 1 & 2 closed   |
   |------------+-----------------------+-----------------------|
   |    64KB    |   pins 1 & 2 closed   |   pins 1 & 2 closed   |
   |------------+-----------------------+-----------------------|
   |   128KB    |   pins 2 & 3 closed   |   pins 2 & 3 closed   |
   |------------+-----------------------+-----------------------|
   |   256KB    |   pins 1 & 2 closed   |   pins 2 & 3 closed   |
   |------------------------------------------------------------|
   | Note: The location of jumpers JP2 & JP3 are unidentified.  |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/m/P-R/32902-3.png>
   

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    32KB    |  (4) 8K x 8   |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |    Size    |          JP2          |          JP3          |
   |------------+-----------------------+-----------------------|
   |    32KB    |   pins 1 & 2 closed   |   pins 1 & 2 closed   |
   |------------+-----------------------+-----------------------|
   |    64KB    |   pins 1 & 2 closed   |   pins 1 & 2 closed   |
   |------------+-----------------------+-----------------------|
   |   128KB    |   pins 2 & 3 closed   |   pins 2 & 3 closed   |
   |------------+-----------------------+-----------------------|
   |   256KB    |   pins 1 & 2 closed   |   pins 2 & 3 closed   |
   |------------------------------------------------------------|
   | Note: The location of jumpers JP2 & JP3 are unidentified.  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                MISCELLANEOUS TECHNICAL NOTE                |
   |------------------------------------------------------------|
   | Note: The location of pin 1 is unidentified.               |
   +------------------------------------------------------------+