SAMSUNG ELECTRONICS, INC.
=========================

   SD 550

   Processor        80286 (exact location unidentified)           
   Processor Speed  12MHz                                         
   Chip Set         Unidentified                                  
   Maximum Onboard  1MB                                           
   Memory           
   Cache            None                                          
   BIOS             Award                                         
   Dimensions       406mm x 406mm                                 
   I/O Options      Floppy drive interface, parallel port, serial 
                    ports (2)                                     
   NPU Options      80287 (exact location unidentified)           

<gopher://bitreich.org/I/th99/m/S-T/33307-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Function      | Label |       Function        | Label |
   |--------------------+-------+-----------------------+-------|
   | Serial port        | CN11  | Power LED & keylock   |  J13  |
   |--------------------+-------+-----------------------+-------|
   | Serial port        | CN12  | Speaker               |  J14  |
   |--------------------+-------+-----------------------+-------|
   | Parallel port      | CN13  | External battery      |  J15  |
   |--------------------+-------+-----------------------+-------|
   | Keyboard connector |  J11  | Floppy drive          |  J17  |
   |                    |       | interface             |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Setting                | Label |  Position  |
   |---------------------------------------+-------+------------|
   |>> | Jumper information unavailable    |  J12  |    N/A     |
   |---+-----------------------------------+-------+------------|
   |   | Parallel port enabled             | JP11  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | Parallel port disabled            | JP11  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Floppy drive interface enabled    | JP12  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | Floppy drive interface disabled   | JP12  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Serial port 1 enabled             | JP13  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | Serial port 1 disabled            | JP13  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Serial port 2 enabled             | JP14  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | Serial port 2 disabled            | JP14  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | BIOS type select 27256            | JP15  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | BIOS type select 27128            | JP15  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | NPU speed select 16MHz            | JP17  | Pins 1 & 2 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | NPU speed select 25MHz            | JP17  | Pins 2 & 3 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | Drive type select dual speed      | JP19  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | Drive type select single speed    | JP19  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Precomp value select 187ns        | JP20  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | Precomp value select 125ns        | JP20  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Floppy drive address select       | JP22  |   Closed   |
   |   | secondary                         |       |            |
   |---+-----------------------------------+-------+------------|
   |   | Floppy drive address select       | JP22  |    Open    |
   |   | primary                           |       |            |
   |---+-----------------------------------+-------+------------|
   |   | Monitor type select color         | SW10  |     Up     |
   |---+-----------------------------------+-------+------------|
   |   | Monitor type select monochrome    | SW10  |    Down    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                            DRAM                            |
   |------------------------------------------------------------|
   |  Size  |   Bank 0   |   Bank 1   |   Bank 2   |   Bank 3   |
   |--------+------------+------------+------------+------------|
   | 640KB  | (9) 41256  | (9) 41256  |  (9) 4164  |  (9) 4164  |
   |--------+------------+------------+------------+------------|
   |  1MB   | (9) 41256  | (9) 41256  | (9) 41256  | (9) 41256  |
   |------------------------------------------------------------|
   | Note: The orientation of the banks is unidentified.        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        DRAM JUMPER                         |
   |------------------------------------------------------------|
   |            Size             |             JP16             |
   |-----------------------------+------------------------------|
   |            640KB            |            Closed            |
   |-----------------------------+------------------------------|
   |             1MB             |             Open             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      DRAM WAIT STATE                       |
   |------------------------------------------------------------|
   |            Setting            |            JP21            |
   |-------------------------------+----------------------------|
   |         0 wait states         |           Closed           |
   |-------------------------------+----------------------------|
   |         1 wait state          |            Open            |
   +------------------------------------------------------------+