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

   YL-A05

   Processor             80386DX                                  
   Processor Speed       20/25MHz                                 
   Chip Set              ACC                                      
   Max. Onboard DRAM     8MB                                      
   Cache                 None                                     
   BIOS                  AMI                                      
   Dimensions            330mm x 218mm                            
   I/O Options           32-bit external memory card slot         
   NPU Options           80387                                    

<gopher://bitreich.org/I/th99/m/U-Z/30416-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | External battery  |   JP2    | Turbo LED        |   JP16   |
   |-------------------+----------+------------------+----------|
   | Turbo switch      |   JP13   | Speaker          |   JP17   |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   JP14   | 32-bit external  |    S1    |
   | keylock           |          | memory card      |          |
   |-------------------+----------+------------------+----------|
   | Reset switch      |   JP15   |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Battery select internal          |  JP1   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Battery select external          |  JP1   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP3   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP3   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP4   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Pipeline mode enabled            |  JP5   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Pipeline mode disabled           |  JP5   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU mode select synchronous      |  JP6   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | NPU mode select asynchronous     |  JP6   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU disabled                     |  JP12  |    Open    |
   |---+----------------------------------+--------+------------|
   |   | NPU enabled                      |  JP12  |   Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size  |     Bank 0     |   Bank 1   |  Bank 2  |  Bank 3  |
   |--------+----------------+------------+----------+----------|
   |  1MB   |  (4) 256K x 9  |    NONE    |   NONE   |   NONE   |
   |--------+----------------+------------+----------+----------|
   |  1MB   |      NONE      |    NONE    | (4) 256K |   NONE   |
   |        |                |            |   x 9    |          |
   |--------+----------------+------------+----------+----------|
   |  2MB   |  (4) 256K x 9  | (4) 256K x |   NONE   |   NONE   |
   |        |                |     9      |          |          |
   |--------+----------------+------------+----------+----------|
   |  2MB   |      NONE      |    NONE    | (4) 256K | (4) 256K |
   |        |                |            |   x 9    |   x 9    |
   |--------+----------------+------------+----------+----------|
   |  4MB   |  (4) 256K x 9  | (4) 256K x | (4) 256K | (4) 256K |
   |        |                |     9      |   x 9    |   x 9    |
   |--------+----------------+------------+----------+----------|
   |  4MB   |   (4) 1M x 9   |    NONE    |   NONE   |   NONE   |
   |--------+----------------+------------+----------+----------|
   |  4MB   |      NONE      |    NONE    | (4) 1M x |   NONE   |
   |        |                |            |    9     |          |
   |--------+----------------+------------+----------+----------|
   |  8MB   |   (4) 1M x 9   | (4) 1M x 9 |   NONE   |   NONE   |
   |--------+----------------+------------+----------+----------|
   |  8MB   |      NONE      |    NONE    | (4) 1M x | (4) 1M x |
   |        |                |            |    9     |    9     |
   |--------+----------------+------------+----------+----------|
   |  16MB  |   (4) 1M x 9   | (4) 1M x 9 | (4) 1M x | (4) 1M x |
   |        |                |            |    9     |    9     |
   |------------------------------------------------------------|
   | Notes:Banks 2 & 3 are used when an external proprietary    |
   | memory card is installed.                                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |  Size   |   JP7    |   JP8    |   JP9   |  JP10   |  JP11  |
   |---------+----------+----------+---------+---------+--------|
   |   1MB   |  1 & 2   |  1 & 2   |  1 & 2  |  1 & 2  | 1 & 2  |
   |---------+----------+----------+---------+---------+--------|
   |   1MB   |  1 & 2   |  2 & 3   |  2 & 3  |  2 & 3  | 2 & 3  |
   |---------+----------+----------+---------+---------+--------|
   |   2MB   |  1 & 2   |  1 & 2   |  1 & 2  |  1 & 2  | 1 & 2  |
   |---------+----------+----------+---------+---------+--------|
   |   2MB   |  1 & 2   |  2 & 3   |  2 & 3  |  2 & 3  | 2 & 3  |
   |---------+----------+----------+---------+---------+--------|
   |   4MB   |  1 & 2   |  2 & 3   |  2 & 3  |  2 & 3  | 2 & 3  |
   |---------+----------+----------+---------+---------+--------|
   |   4MB   |  2 & 3   |  1 & 2   |  1 & 2  |  1 & 2  | 1 & 2  |
   |---------+----------+----------+---------+---------+--------|
   |   4MB   |  2 & 3   |  2 & 3   |  2 & 3  |  2 & 3  | 2 & 3  |
   |---------+----------+----------+---------+---------+--------|
   |   8MB   |  2 & 3   |  1 & 2   |  1 & 2  |  1 & 2  | 1 & 2  |
   |---------+----------+----------+---------+---------+--------|
   |   8MB   |  2 & 3   |  2 & 3   |  2 & 3  |  2 & 3  | 2 & 3  |
   |---------+----------+----------+---------+---------+--------|
   |  16MB   |  2 & 3   |  2 & 3   |  2 & 3  |  2 & 3  | 2 & 3  |
   |------------------------------------------------------------|
   | Notes:Pins designated should be in the closed position.    |
   +------------------------------------------------------------+