UNIDENTIFIED
============

   386SI4

   Processor             80386DX/CX486DLC                         
   Processor Speed       33/40MHz                                 
   Chip Set              C & T                                    
   Max. Onboard DRAM     32MB                                     
   SRAM Cache            64/128/256KB                             
   BIOS                  AMI                                      
   Dimensions            254mm x 218mm                            
   I/O Options           None                                     
   NPU Options           80387/CX83D87/3167                       

<gopher://bitreich.org/I/th99/m/U-Z/31291-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose        | Location | Purpose             | Location |
   |----------------+----------+---------------------+----------|
   | Turbo LED      |    J3    | Reset switch        |    J6    |
   |----------------+----------+---------------------+----------|
   | Turbo switch   |    J4    | Power LED & keylock |    J7    |
   |----------------+----------+---------------------+----------|
   | Speaker        |    J5    |                     |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Jumper | Position |
   |----------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  |  JP1   |   open   |
   |---+------------------------------------+--------+----------|
   |>> | Monitor type select color          |  JP2   |  closed  |
   |---+------------------------------------+--------+----------|
   |   | Monitor type select monochrome     |  JP2   |   open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size  |    Bank 0     |    Bank 1     |       JP11        |
   |--------+---------------+---------------+-------------------|
   |  1MB   | (4) 256K x 9  |     NONE      | pins 2 & 3 closed |
   |--------+---------------+---------------+-------------------|
   |  2MB   | (4) 256K x 9  | (4) 256K x 9  | pins 1 & 2 closed |
   |--------+---------------+---------------+-------------------|
   |  4MB   |  (4) 1M x 9   |     NONE      | pins 2 & 3 closed |
   |--------+---------------+---------------+-------------------|
   |  5MB   |  (4) 1M x 9   | (4) 256K x 9  | pins 2 & 3 closed |
   |--------+---------------+---------------+-------------------|
   |  8MB   |  (4) 1M x 9   |  (4) 1M x 9   | pins 1 & 2 closed |
   |--------+---------------+---------------+-------------------|
   |  16MB  |  (4) 4M x 9   |     NONE      | pins 2 & 3 closed |
   |--------+---------------+---------------+-------------------|
   |  17MB  |  (4) 4M x 9   | (4) 256K x 9  | pins 2 & 3 closed |
   |--------+---------------+---------------+-------------------|
   |  20MB  |  (4) 4M x 9   |  (4) 1M x 9   | pins 2 & 3 closed |
   |--------+---------------+---------------+-------------------|
   |  32MB  |  (4) 4M x 9   |  (4) 4M x 9   | pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   | Jumper |      64KB       |     128KB      |     256KB      |
   |--------+-----------------+----------------+----------------|
   |  SR1   |   pins 1 & 2    |   pins 2 & 3   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  SR2   |   pins 1 & 2    |   pins 2 & 3   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  SR3   |   pins 2 & 3    |   pins 2 & 3   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  SR4   |   pins 2 & 3    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  SR5   |   pins 2 & 3    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  SR6   |   pins 2 & 3    |   pins 2 & 3   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  SR7   |   pins 1 & 2    |   pins 2 & 3   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  SR8   |   pins 1 & 2    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  SR9   |   pins 1 & 2    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     SRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |  Cache SRAM   |   Location    |      TAG      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (8) 8K x 8   |  Banks 0 & 1  |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |    Bank 0     |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (8) 32K x 8  |  Banks 0 & 1  |  (1) 8K x 8   |
   +------------------------------------------------------------+