(TXT) View Source
       
       # OLIVETTI
       
          M280
       
          Processor    80286                                             
          Processor    12MHz                                             
          Speed        
          Chip Set     Unidentified                                      
          Max. Onboard 1MB                                               
          DRAM         
          Cache        None                                              
          BIOS         Unidentified                                      
          Dimensions   355mm x 304mm                                     
          I/O Options  Floppy drive interface, parallel port, serial     
                       port                                              
          NPU Options  80287                                             
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose       | Location | Purpose              | Location |
          |---------------+----------+----------------------+----------|
          | Parallel port |   CN1    | Floppy drive         |   CN3    |
          |               |          | interface            |          |
          |---------------+----------+----------------------+----------|
          | Serial port   |   CN2    |                      |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               |  Jumper  | Position |
          |--------------------------------------+----------+----------|
          | » | Memory size select 1MB           | JU1 pins |   Open   |
          |   |                                  |  1 & 9   |          |
          |---+----------------------------------+----------+----------|
          |   | Memory size select 512KB         | JU1 pins |  Closed  |
          |   |                                  |  1 & 9   |          |
          |---+----------------------------------+----------+----------|
          | » | Parallel port enabled            | JU1 pins |  Closed  |
          |   |                                  |  6 & 14  |          |
          |---+----------------------------------+----------+----------|
          |   | Parallel port disabled           | JU1 pins |   Open   |
          |   |                                  |  6 & 14  |          |
          |---+----------------------------------+----------+----------|
          | » | Serial port enabled              | JU1 pins |  Closed  |
          |   |                                  |  7 & 15  |          |
          |---+----------------------------------+----------+----------|
          |   | Serial port disabled             | JU1 pins |   Open   |
          |   |                                  |  7 & 15  |          |
          |---+----------------------------------+----------+----------|
          | » | Factory configured - do not      | JU1 pins |   Open   |
          |   | alter                            |  8 & 16  |          |
          |---+----------------------------------+----------+----------|
          | » | System clock source select 24MHz | JU2 pins |   Open   |
          |   | on board clock                   |  7 & 15  |          |
          |---+----------------------------------+----------+----------|
          |   | System clock source select       | JU2 pins |  Closed  |
          |   | external clock                   |  7 & 15  |          |
          |---+----------------------------------+----------+----------|
          | » | NPU wait state select 3 wait     | JU2 pins |  Closed  |
          |   | states                           |  8 & 16  |          |
          |---+----------------------------------+----------+----------|
          |   | NPU wait state select 10 wait    | JU2 pins |   Open   |
          |   | states                           |  8 & 16  |          |
          |---+----------------------------------+----------+----------|
          | » | Burn in enabled                  | JU3 pins |   Open   |
          |   |                                  |  1 & 5   |          |
          |---+----------------------------------+----------+----------|
          |   | Burn in disabled                 | JU3 pins |  Closed  |
          |   |                                  |  1 & 5   |          |
          |---+----------------------------------+----------+----------|
          | » | Monitor type select              | JU3 pins |  Closed  |
          |   | color/Olivetti monochrome        |  2 & 6   |          |
          |---+----------------------------------+----------+----------|
          |   | Monitor type select monochrome   | JU3 pins |   Open   |
          |   |                                  |  2 & 6   |          |
          |---+----------------------------------+----------+----------|
          | » | 32KHz clock enabled              | JU3 pins |  Closed  |
          |   |                                  |  3 & 7   |          |
          |---+----------------------------------+----------+----------|
          |   | 32KHz clock disabled             | JU3 pins |   Open   |
          |   |                                  |  3 & 7   |          |
          |---+----------------------------------+----------+----------|
          | » | Factory configured - do not      | JU3 pins |   Open   |
          |   | alter                            |  4 & 8   |          |
          |---+----------------------------------+----------+----------|
          | » | 14MHz clock enabled              |   JU4    |  Closed  |
          |---+----------------------------------+----------+----------|
          |   | 14MHz clock disabled             |   JU4    |   Open   |
          |---+----------------------------------+----------+----------|
          | » | 1.8MHz clock enabled             |   JU5    |  Closed  |
          |---+----------------------------------+----------+----------|
          |   | 1.8MHz clock disabled            |   JU5    |   Open   |
          |---+----------------------------------+----------+----------|
          | » | Factory configured - do not      |   JU8    |  Closed  |
          |   | alter                            |          |          |
          |---+----------------------------------+----------+----------|
          | » | Factory configured - do not      |   JU9    |  Closed  |
          |   | alter                            |          |          |
          |------------------------------------------------------------|
          | Note: The locations of JU4, JU5, JU8 & JU9 are             |
          | unidentified.                                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |      512KB       |     (18) 41256     |        NONE        |
          |------------------+--------------------+--------------------|
          |       1MB        |     (18) 41256     |     (18) 41256     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |       Speed        |        JU6        |        JU7        |
          |--------------------+-------------------+-------------------|
          |        8MHz        |       Open        |      Closed       |
          |--------------------+-------------------+-------------------|
          |       12MHz        |      Closed       |       Open        |
          |------------------------------------------------------------|
          | Note: The locations of JU6 & JU7 aare unidentified.        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  NPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          | Speed | JU2 pins 1 | JU2 pins 2  | JU2 pins 3 | JU2 pins 4 |
          |       |    & 9     |    & 10     |    & 11    |    & 12    |
          |-------+------------+-------------+------------+------------|
          | 8MHz  |    Open    |    Open     |    Open    |    Open    |
          |-------+------------+-------------+------------+------------|
          | 12MHz |   Closed   |   Closed    |   Closed   |   Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              NPU SPEED CONFIGURATION (CON’T)               |
          |------------------------------------------------------------|
          |    Speed     |     JU10      |     JU11     |     JU12     |
          |--------------+---------------+--------------+--------------|
          |     8MHz     |     Open      |     Open     |     Open     |
          |--------------+---------------+--------------+--------------|
          |    12MHz     |    Closed     |    Closed    |    Closed    |
          |------------------------------------------------------------|
          | Note: The locations of JU10, JU11 & JU12 aare              |
          | unidentified.                                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     BIOS CONFIGURATION                     |
          |------------------------------------------------------------|
          | Type  | JU1 pins 2  | JU1 pins 3 | JU1 pins 4 | JU1 pins 5 |
          |       |    & 10     |    & 11    |    & 12    |    & 13    |
          |-------+-------------+------------+------------+------------|
          | 27128 |   Closed    |    Open    |   Closed   |    Open    |
          |-------+-------------+------------+------------+------------|
          | 27256 |    Open     |   Closed   |    Open    |   Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SCROLL MODE CONFIGURATION                  |
          |------------------------------------------------------------|
          |      Setting      |  JU2 pins 5 & 13   |  JU2 pins 6 & 14  |
          |-------------------+--------------------+-------------------|
          |    Fast scroll    |        Open        |       Open        |
          |-------------------+--------------------+-------------------|
          |  Flicker scroll   |       Closed       |      Closed       |
          +------------------------------------------------------------+