(TXT) View Source
       
       # ACER, INC.
       
          V55
       
          Device Type     Mainboard                                      
          Processor       CX M1/AM K5/Pentium                            
          Processor Speed 75/90/100/120/133/150/166/200MHz               
          Chip Set        Unidentified                                   
          Video Chip Set  None                                           
          Maximum Onboard 128MB (EDO supported)                          
          Memory          
          Maximum Video   None                                           
          Memory          
          Cache           256/512KB                                      
          BIOS            Unidentified                                   
          Dimensions      254mm x 218mm                                  
          I/O Options     32-bit PCI slots (4), floppy drive interface,  
                          green PC connector, IDE interfaces (2),        
                          parallel port, PS/2 mouse port, serial ports   
                          (2), cache slot, IR connector, USB connector   
          NPU Options     None                                           
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose         | Location | Purpose         |  Location   |
          |-----------------+----------+-----------------+-------------|
          | Standby power   |   CN1    | Power LED &     | CN16/pins 1 |
          | connector       |          | keylock         |     – 5     |
          |-----------------+----------+-----------------+-------------|
          | Serial port 2   |   CN2    | Speaker         | CN16/pins 7 |
          |                 |          |                 |    – 10     |
          |-----------------+----------+-----------------+-------------|
          | Serial port 1   |   CN3    | Green PC LED    |  CN16/pins  |
          |                 |          |                 |   12 & 13   |
          |-----------------+----------+-----------------+-------------|
          | Parallel port   |   CN4    | Reset switch    |  CN16/pins  |
          |                 |          |                 |   19 & 20   |
          |-----------------+----------+-----------------+-------------|
          | Floppy drive    |   CN5    | Green PC        |    CN17     |
          | interface       |          | connector       |             |
          |-----------------+----------+-----------------+-------------|
          | IDE interface 2 |   CN6    | Software        |    CN18     |
          |                 |          | shutdown switch |             |
          |-----------------+----------+-----------------+-------------|
          | IDE interface 1 |   CN9    | IR connector    |    CN19     |
          |-----------------+----------+-----------------+-------------|
          | PS/2 mouse port |   CN11   | IDE interface   |    CN20     |
          |                 |          | LED             |             |
          |-----------------+----------+-----------------+-------------|
          | USB connector   |   CN12   | 32-bit PCI      |  PC1 – PC4  |
          |                 |          | slots           |             |
          |-----------------+----------+-----------------+-------------|
          | CPU power       |   CN13   | Cache slot      |     SL1     |
          | shorting block  |          |                 |             |
          |-----------------+----------+-----------------+-------------|
          | CPU fan power   |   CN14   |                 |             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function           |  Label  |     Position      |
          |------------------------------+---------+-------------------|
          | » | BIOS type select flash   |   JP4   | Pins 2 & 3 closed |
          |---+--------------------------+---------+-------------------|
          |   | BIOS type select EPROM   |   JP4   | Pins 1 & 2 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       8MB        |    (2) 1M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 2M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       24MB       |    (2) 2M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 4M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       40MB       |    (2) 4M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       48MB       |    (2) 4M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 8M x 36     |        None        |
          |------------------+--------------------+--------------------|
          |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |       72MB       |    (2) 8M x 36     |    (2) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       80MB       |    (2) 8M x 36     |    (2) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       96MB       |    (2) 8M x 36     |    (2) 4M x 36     |
          |------------------+--------------------+--------------------|
          |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |     Size     |       Bank 0       |          SL1           |
          |--------------+--------------------+------------------------|
          |    256KB     |    (2) 32K x 32    |     Not installed      |
          |--------------+--------------------+------------------------|
          |    512KB     |    (2) 32K x 32    | 256KB module installed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |       Size       |        JP8         |        JP9         |
          |------------------+--------------------+--------------------|
          |      256KB       | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |      512KB       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CACHE TYPE CONFIGURATION                  |
          |------------------------------------------------------------|
          |             Type              |            JP10            |
          |-------------------------------+----------------------------|
          |        » M1 1 + 4 mode        |     Pins 2 & 3 closed      |
          |-------------------------------+----------------------------|
          |     M1 linear burst mode      |     Pins 1 & 2 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU CLOCK FREQUENCY SELECTION                |
          |------------------------------------------------------------|
          |    Clock speed     |       S1/3        |       S1/4        |
          |--------------------+-------------------+-------------------|
          |       50MHz        |        On         |        On         |
          |--------------------+-------------------+-------------------|
          |       60MHz        |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |       66MHz        |        On         |        Off        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU BUS RATIO SELECTION (CYRIX)               |
          |------------------------------------------------------------|
          |     Bus ratio      |       S1/1        |       SW1/2       |
          |--------------------+-------------------+-------------------|
          |         1          |        On         |        On         |
          |--------------------+-------------------+-------------------|
          |         2          |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |         3          |        Off        |        Off        |
          |--------------------+-------------------+-------------------|
          |         4          |        On         |        Off        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU BUS RATIO SELECTION (AMD)                |
          |------------------------------------------------------------|
          |     Bus ratio      |       S1/1        |       SW1/2       |
          |--------------------+-------------------+-------------------|
          |         2          |        On         |        On         |
          |--------------------+-------------------+-------------------|
          |         2          |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |        3/2         |        On         |        Off        |
          |--------------------+-------------------+-------------------|
          |        3/2         |        Off        |        Off        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU BUS RATIO SELECTION (INTEL)               |
          |------------------------------------------------------------|
          |     Bus ratio      |       S1/1        |       SW1/2       |
          |--------------------+-------------------+-------------------|
          |         2          |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |         3          |        On         |        Off        |
          |--------------------+-------------------+-------------------|
          |        3/2         |        Off        |        Off        |
          |--------------------+-------------------+-------------------|
          |        5/2         |        On         |        On         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU VOLTAGE SELECTION                    |
          |------------------------------------------------------------|
          | Voltage  | V core  |        JP6        |        JP7        |
          |----------+---------+-------------------+-------------------|
          |  » 3.3v  |  2.8v   | Pins 2 & 3 closed | Pins 2 & 3 closed |
          |----------+---------+-------------------+-------------------|
          |   3.5v   |  2.5v   | Pins 1 & 2 closed | Pins 1 & 2 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       BIOS SELECTION                       |
          |------------------------------------------------------------|
          |            Type            |              JP5              |
          |----------------------------+-------------------------------|
          |             NC             |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |          » 29E010          |       Pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |           28F001           |       Pins 3 & 4 closed       |
          +------------------------------------------------------------+