YOUTH KEEP ENTERPRISES, LTD.
============================

   502 386DX

   Processor             80386DX                                  
   Processor Speed       33MHz                                    
   Chip Set              Unidentified                             
   Max. Onboard DRAM     8MB                                      
   Cache                 64/256KB                                 
   BIOS                  Unidentified                             
   Dimensions            355mm x 304mm                            
   I/O Options           32-bit external memory card slot         
   NPU Options           80387/3167                               

<gopher://bitreich.org/I/th99/m/U-Z/30639-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Power LED &   |    J1    | Turbo LED            |    J5    |
   | keylock       |          |                      |          |
   |---------------+----------+----------------------+----------|
   | Speaker       |    J2    | External battery     |    J6    |
   |---------------+----------+----------------------+----------|
   | Turbo switch  |    J3    | 32-bit external      |    S1    |
   |               |          | memory card          |          |
   |---------------+----------+----------------------+----------|
   | Reset switch  |    J4    |                      |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP10  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP10  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU disabled                     |  JP13  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | NPU enabled                      |  JP13  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU mode select asynchronous     |  JP14  | pins 1 & 2 |
   |   | with CPU                         |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | NPU mode select synchronous with |  JP14  | pins 2 & 3 |
   |   | CPU                              |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | CPU speed select fast            |  JP15  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU speed select slow            |  JP15  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |     Size     |        Bank 0        |        Bank 1        |
   |--------------+----------------------+----------------------|
   |     1MB      |     (4) 256K x 9     |         NONE         |
   |--------------+----------------------+----------------------|
   |     2MB      |     (4) 256K x 9     |     (4) 256K x 9     |
   |--------------+----------------------+----------------------|
   |     4MB      |      (4) 1M x 9      |         NONE         |
   |--------------+----------------------+----------------------|
   |     5MB      |     (4) 256K x 9     |      (4) 1M x 9      |
   |--------------+----------------------+----------------------|
   |     8MB      |      (4) 1M x 9      |      (4) 1M x 9      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   | Size | JP1  | JP2  | JP3  | JP4  | JP5  | JP6  | JP7 | JP8 |
   |------+------+------+------+------+------+------+-----+-----|
   | 1MB  |Closed|Closed|Closed|Closed|2 & 3 | Open |Open |Open |
   |------+------+------+------+------+------+------+-----+-----|
   | 2MB  |Closed|Closed|Closed|Closed|2 & 3 |2 & 3 |Open |Open |
   |------+------+------+------+------+------+------+-----+-----|
   | 4MB  |Closed|Closed| Open | Open |1 & 2 | Open |Open |Open |
   |------+------+------+------+------+------+------+-----+-----|
   | 5MB  |Closed| Open |Closed|Closed|2 & 3 |1 & 2 |Open |Open |
   |------+------+------+------+------+------+------+-----+-----|
   | 8MB  |Closed| Open | Open |Closed|1 & 2 |1 & 2 |Open |Open |
   |------------------------------------------------------------|
   |Note:Pins designated should be in the closed position.      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |        TAG         |
   |------------------+--------------------+--------------------|
   |       64KB       |    (8) 64K x 1     |    (2) 64K x 1     |
   |------------------+--------------------+--------------------|
   |      256KB       |    (8) 256K x 1    |    (2) 256K x 1    |
   +------------------------------------------------------------+