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

   B158

   Processor              V 20 (exact location unidentified)      
   Processor Speed        4MHz                                    
   Chip Set               Unidentified                            
   Video Chip Set         None                                    
   Maximum Onboard Memory 1MB                                     
   Maximum Video Memory   None                                    
   Cache                  None                                    
   BIOS                   NEL                                     
   Dimensions             254mm x 218mm                           
   I/O Options            None                                    
   NPU Options            8087 (exact location unidentified)      

<gopher://bitreich.org/I/th99/m/U-Z/33560-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose         | Location | Purpose            | Location |
   |-----------------+----------+--------------------+----------|
   | Keylock         |    J1    | Turbo LED          |    J4    |
   |-----------------+----------+--------------------+----------|
   | Speaker         |    J2    | Turbo switch       |    J5    |
   |-----------------+----------+--------------------+----------|
   | Power LED       |    J3    | Reset switch       |    J6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function                | Label  | Position  |
   |---------------------------------------+--------+-----------|
   |   | DRAM parity check disabled        | SWA/1  |    On     |
   |---+-----------------------------------+--------+-----------|
   |   | DRAM parity check enabled         | SWA/1  |    Off    |
   |---+-----------------------------------+--------+-----------|
   |>> | Factory configured - do not alter | SWA/2  |    On     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  | Bank  | Bank  | Bank | Bank | Bank | Bank | Bank 4 |
   |       |   0   |   1   |  2   |  2A  |  3   |  3A  |        |
   |-------+-------+-------+------+------+------+------+--------|
   | 512KB |  (9)  |  (9)  | None | None | None | None |  None  |
   |       | 41256 | 41256 |      |      |      |      |        |
   |-------+-------+-------+------+------+------+------+--------|
   | 640KB |  (9)  |  (9)  | (2)  | (1)  | (2)  | (1)  |  None  |
   |       | 41256 | 41256 | 4464 | 4164 | 4464 | 4164 |        |
   |-------+-------+-------+------+------+------+------+--------|
   |  1MB  | None  | None  | None | None | None | None |  (9)   |
   |       |       |       |      |      |      |      | 411000 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              DRAM JUMPER/SWITCH CONFIGURATION              |
   |------------------------------------------------------------|
   |     Size      |      JP1      |    SWA/3     |    SWA/4    |
   |---------------+---------------+--------------+-------------|
   |     None      |    Closed     |      On      |     On      |
   |---------------+---------------+--------------+-------------|
   |     512KB     |    Closed     |     Off      |     On      |
   |---------------+---------------+--------------+-------------|
   |     640KB     |    Closed     |      On      |     Off     |
   |---------------+---------------+--------------+-------------|
   |      1MB      |     Open      |     Off      |     Off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     MONITOR SELECTION                      |
   |------------------------------------------------------------|
   |      Setting       |       SWA/5       |       SWA/6       |
   |--------------------+-------------------+-------------------|
   |        None        |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |     Monochrome     |        Off        |        Off        |
   |--------------------+-------------------+-------------------|
   |   Color 40 x 25    |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |   Color 80 x 25    |        On         |        Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   FLOPPY DRIVE SELECTION                   |
   |------------------------------------------------------------|
   |  Drives installed  |       SWA/7       |       SWA/8       |
   |--------------------+-------------------+-------------------|
   |         1          |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |         2          |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |         3          |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |         4          |        Off        |        Off        |
   +------------------------------------------------------------+