(TXT) View Source
       
       # DIGITAL EQUIPMENT CORPORATION
       
          CELEBRIS 486
       
          Device Type   Mainboard                                        
          Processor     80486SX/80486DX/80486DX2/P24D/P24T/P24CT         
          Processor     25/33/50(internal)/66(internal)/100(internal)MHz 
          Speed         
          Chip Set      Unidentified                                     
          Video Chip    Unidentified                                     
          Set           
          Maximum       128MB                                            
          Onboard       
          Memory        
          Maximum Video 1MB                                              
          Memory        
          Cache         256KB                                            
          BIOS          Unidentified                                     
          Dimensions    254mm x 218mm                                    
          I/O Options   Floppy drive interface, IDE interface, PS/2      
                        mouse port, riser slot                           
          NPU Options   None                                             
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose        | Location | Purpose             | Location |
          |----------------+----------+---------------------+----------|
          | Chassis fan    |    C1    | PS/2 mouse port     |   CN4    |
          | power          |          |                     |          |
          |----------------+----------+---------------------+----------|
          | Speaker        |    C2    | Floppy drive        |   CN5    |
          |                |          | interface           |          |
          |----------------+----------+---------------------+----------|
          | VGA port       |   CN1    | IDE interface       |   CN6    |
          |----------------+----------+---------------------+----------|
          | Serial port    |   CN2    | Riser slot          |   SL1    |
          |----------------+----------+---------------------+----------|
          | Parallel port  |   CN3    |                     |          |
          |------------------------------------------------------------|
          | Note: VGA & serial port are shown for informational        |
          | purposes only. The location may not be exact.              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | EEPROM write control disabled     |  J24  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | EEPROM write control enabled      |  J24  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Setup control disabled            |  J25  | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | Setup control enabled             |  J25  | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Floppy drive write control        |  J26  | Pins 2 & 3 |
          |   | disabled                          |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | Floppy drive write control        |  J26  | Pins 1 & 2 |
          |   | enabled                           |       |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 2M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 4M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 2M x 36 | (1) 2M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 4M x 36 | (1) 2M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 2M x  |    None    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 2M x 36 | (1) 4M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 8M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 2M x 36 |  (1) 2M x  |    None    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 2M x  |  (1) 2M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 8M x 36 | (1) 2M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 4M x 36 | (1) 2M x 36 |  (1) 2M x  |  (1) 2M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 2M x 36 | (1) 4M x 36 |  (1) 4M x  |    None    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 2M x 36 | (1) 8M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 8M x 36 | (1) 2M x 36 |  (1) 2M x  |    None    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 8M x 36 | (1) 4M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    None    |
          |      |             |             |     36     |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SIMM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
          |-------+-------------+------------+------------+------------|
          | 48MB  | (1) 4M x 36 |  (1) 8M x  |    None    |    None    |
          |       |             |     36     |            |            |
          |-------+-------------+------------+------------+------------|
          | 56MB  | (1) 8M x 36 |  (1) 2M x  |  (1) 2M x  |  (1) 2M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 56MB  | (1) 2M x 36 |  (1) 4M x  |  (1) 4M x  |  (1) 4M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 64MB  | (1) 8M x 36 |  (1) 4M x  |  (1) 4M x  |    None    |
          |       |             |     36     |     36     |            |
          |-------+-------------+------------+------------+------------|
          | 64MB  | (1) 8M x 36 |  (1) 8M x  |    None    |    None    |
          |       |             |     36     |            |            |
          |-------+-------------+------------+------------+------------|
          | 64MB  | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |  (1) 4M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 72MB  | (1) 2M x 36 |  (1) 8M x  |  (1) 8M x  |    None    |
          |       |             |     36     |     36     |            |
          |-------+-------------+------------+------------+------------|
          | 80MB  | (1) 8M x 36 |  (1) 4M x  |  (1) 4M x  |  (1) 4M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 80MB  | (1) 4M x 36 |  (1) 8M x  |  (1) 8M x  |    None    |
          |       |             |     36     |     36     |            |
          |-------+-------------+------------+------------+------------|
          | 96MB  | (1) 8M x 36 |  (1) 8M x  |  (1) 8M x  |    None    |
          |       |             |     36     |     36     |            |
          |-------+-------------+------------+------------+------------|
          | 104MB | (1) 2M x 36 |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 112MB | (1) 4M x 36 |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 128MB | (1) 8M x 36 |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |
          |       |             |     36     |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          | Note: 256KB cache is factory installed and is not          |
          | configurable. The location is unidentified.                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          | Note: 1MB video memory is factory installed and is not     |
          | configurable. The location is unidentified.                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CPU SPEED SELECTION                     |
          |------------------------------------------------------------|
          |           Speed            |              J6               |
          |----------------------------+-------------------------------|
          |           25MHz            |       Pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |           33MHz            |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |           50iMHz           |       Pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |           66iMHz           |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |          100iMHz           |       Pins 1 & 2 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CPU TYPE SELECTION                     |
          |------------------------------------------------------------|
          |             Type              |            J50             |
          |-------------------------------+----------------------------|
          |            80486SX            |            Open            |
          |-------------------------------+----------------------------|
          |            80486DX            |            Open            |
          |-------------------------------+----------------------------|
          |           80486DX2            |            Open            |
          |-------------------------------+----------------------------|
          |             P24D              |           Closed           |
          |-------------------------------+----------------------------|
          |             P24T              |           Closed           |
          |-------------------------------+----------------------------|
          |             P24CT             |           Closed           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               SERIAL BOOT CONTROL SELECTION                |
          |------------------------------------------------------------|
          |     Setting      |         J7         |         J8         |
          |------------------+--------------------+--------------------|
          |     Disabled     | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |     Enabled      | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          +------------------------------------------------------------+