(TXT) View Source
       
       # CSS LABORATORIES, INC.
       
          MINIMAX/LITTLE MAX 486
       
          Processor    80486SX/80486DX/80486DX2/Pentium Overdrive        
          Processor    25/33/50(internal)/50/66(internal)MHz             
          Speed        
          Chip Set     SIS                                               
          Max. Onboard 16MB                                              
          DRAM         
          Cache        64/128/256KB                                      
          BIOS         AMI                                               
          Dimensions   330mm x 218mm                                     
          I/O Options  Floppy drive interface, IDE interface, parallel   
                       port, serial ports (2)                            
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | Power LED & keylock |    J4    | Floppy drive   |   PJ1    |
          |                     |          | interface      |          |
          |---------------------+----------+----------------+----------|
          | Reset switch/Turbo  |    J5    | Parallel port  |   PJ2    |
          | LED                 |          |                |          |
          |---------------------+----------+----------------+----------|
          | Turbo switch (not   |    J6    | Serial port 1  |   PJ3    |
          | available on        |          |                |          |
          | MiniMax)            |          |                |          |
          |---------------------+----------+----------------+----------|
          | Speaker             |    J9    | Serial port 2  |   PJ4    |
          |---------------------+----------+----------------+----------|
          | Equipment panel     |   J39    | IDE interface  |   PJ5    |
          | connector           |          |                |          |
          |---------------------+----------+----------------+----------|
          | IDE interface LED   |   J40    | Riser Card     |   SL1    |
          |---------------------+----------+----------------+----------|
          | IDE interface LED   |   LED    |                |          |
          | (on board IDE)      |          |                |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CPU speed select iOSC/1          |   J1   | pins 1 & 2 |
          |   | (50/66MHz)                       |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CPU speed select iOSC/2          |   J1   | pins 2 & 3 |
          |   | (25/33MHz)                       |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Ocsillator type select OSC1      |   J2   | pins 1 & 2 |
          |   | (25/50MHz)                       |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Ocsillator type select OSC3      |   J2   | pins 2 & 3 |
          |   | (33/66MHz)                       |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select color        |   J3   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |   J3   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J11   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Floppy drive interface enabled   |   S4   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Floppy drive interface disabled  |   S4   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | IDE interface enabled            |   S5   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | IDE interface disabled           |   S5   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              SERIAL PORT CONFIGURATION (PJ3)               |
          |------------------------------------------------------------|
          |  Port 1  | IRQ  |       S0       |     S1     |    PJ6     |
          |----------+------+----------------+------------+------------|
          | Disabled | N/A  |   pins 1 & 2   | pins 1 & 2 |    N/A     |
          |          |      |     closed     |   closed   |            |
          |----------+------+----------------+------------+------------|
          |   COM1   | IRQ4 |   pins 2 & 3   | pins 2 & 3 | pins 1 & 2 |
          |          |      |     closed     |   closed   |   closed   |
          |----------+------+----------------+------------+------------|
          |   COM2   | IRQ3 |   pins 1 & 2   | pins 2 & 3 | pins 1 & 3 |
          |          |      |     closed     |   closed   |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              SERIAL PORT CONFIGURATION (PJ4)               |
          |------------------------------------------------------------|
          |  Port 2  | IRQ  |       S2       |     S3     |    PJ6     |
          |----------+------+----------------+------------+------------|
          | Disabled | N/A  |   pins 1 & 2   | pins 1 & 2 |    N/A     |
          |          |      |     closed     |   closed   |            |
          |----------+------+----------------+------------+------------|
          |   COM1   | IRQ4 |   pins 1 & 2   | pins 2 & 3 | pins 2 & 4 |
          |          |      |     closed     |   closed   |   closed   |
          |----------+------+----------------+------------+------------|
          |   COM2   | IRQ3 |   pins 2 & 3   | pins 2 & 3 | pins 3 & 4 |
          |          |      |     closed     |   closed   |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PARALLEL PORT CONFIGURATION                 |
          |------------------------------------------------------------|
          |   LPT    | IRQ  |       P0       |     P1     |    PRT     |
          |----------+------+----------------+------------+------------|
          | Disabled | N/A  |   pins 1 & 2   | pins 1 & 2 |    N/A     |
          |          |      |     closed     |   closed   |            |
          |----------+------+----------------+------------+------------|
          |  LPT 1   | IRQ7 |   pins 2 & 3   | pins 1 & 2 | pins 2 & 3 |
          |          |      |     closed     |   closed   |   closed   |
          |----------+------+----------------+------------+------------|
          |  LPT 2   | IRQ5 |   pins 2 & 3   | pins 2 & 3 | pins 1 & 2 |
          |          |      |     closed     |   closed   |   closed   |
          |----------+------+----------------+------------+------------|
          |  LPT 3   | IRQ7 |   pins 1 & 2   | pins 2 & 3 | pins 2 & 3 |
          |          |      |     closed     |   closed   |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       1MB        |   (1) 256K x 36    |        NONE        |
          |------------------+--------------------+--------------------|
          |       2MB        |   (1) 256K x 36    |   (1) 256K x 36    |
          |------------------+--------------------+--------------------|
          |       2MB        |   (1) 512K x 36    |        NONE        |
          |------------------+--------------------+--------------------|
          |       4MB        |    (1) 1M x 36     |        NONE        |
          |------------------+--------------------+--------------------|
          |       5MB        |   (1) 256K x 36    |    (1) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       6MB        |   (1) 512K x 36    |    (1) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       8MB        |    (1) 1M x 36     |    (1) 1M x 36     |
          |------------------+--------------------+--------------------|
          |       8MB        |    (1) 2M x 36     |        NONE        |
          |------------------+--------------------+--------------------|
          |       10MB       |   (1) 512K x 36    |    (1) 2M x 36     |
          |------------------+--------------------+--------------------|
          |       16MB       |    (1) 2M x 36     |    (1) 2M x 36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM JUMPER CONFIGURATION                  |
          |------------------------------------------------------------|
          |   Size   |            J8            |         J10          |
          |----------+--------------------------+----------------------|
          |   1MB    |           Open           |         Open         |
          |----------+--------------------------+----------------------|
          |   2MB    |    pins 1 & 2 closed     |  pins 2 & 3 closed   |
          |----------+--------------------------+----------------------|
          |   2MB    |    pins 2 & 3 closed     |         Open         |
          |----------+--------------------------+----------------------|
          |   4MB    |           Open           |         Open         |
          |----------+--------------------------+----------------------|
          |   5MB    |    pins 1 & 2 closed     |  pins 2 & 3 closed   |
          |----------+--------------------------+----------------------|
          |   6MB    |    pins 2 & 3 closed     |  pins 1 & 2 closed   |
          |----------+--------------------------+----------------------|
          |   8MB    |    pins 1 & 2 closed     |  pins 2 & 3 closed   |
          |----------+--------------------------+----------------------|
          |   8MB    |    pins 2 & 3 closed     |         Open         |
          |----------+--------------------------+----------------------|
          |   10MB   |    pins 2 & 3 closed     |  pins 1 & 2 closed   |
          |----------+--------------------------+----------------------|
          |   16MB   |    pins 2 & 3 closed     |  pins 1 & 2 closed   |
          |------------------------------------------------------------|
          |      Note: This board accepts 4M x 36 SIMMS, but jumper    |
          |      settings are not identified by the manufacturer.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |   W6   |   W7   |       W8        |       W9       |
          |-------+--------+--------+-----------------+----------------|
          | 64KB  |  Open  |  Open  |   pins 2 & 3    |   pins 2 & 3   |
          |       |        |        |     closed      |     closed     |
          |-------+--------+--------+-----------------+----------------|
          | 128KB |  Open  | Closed |   pins 1 & 2    |   pins 1 & 2   |
          |       |        |        |     closed      |     closed     |
          |-------+--------+--------+-----------------+----------------|
          | 256KB | Closed | Closed |   pins 2 & 3    |   pins 2 & 3   |
          |       |        |        |     closed      |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Type   |        W2         |        W4         |   W5    |
          |----------+-------------------+-------------------+---------|
          | 80486SX  | pins 1 & 2 closed | pins 1 & 2 closed | Closed  |
          |----------+-------------------+-------------------+---------|
          | 80486DX  | pins 2 & 3 closed | pins 2 & 3 closed |  Open   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             CPU TYPE CONFIGURATION (OVERDRIVE)             |
          |------------------------------------------------------------|
          |          Type           |         W1         |     W3      |
          |-------------------------+--------------------+-------------|
          |   Overdrive installed   | pins 1 & 2 closed  |   Closed    |
          |-------------------------+--------------------+-------------|
          | Overdrive not installed | pins 2 & 3 closed  |    Open     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             EQUIPMENT PANEL CONNECTOR PIN OUT              |
          |------------------------------------------------------------|
          |          Description          |            J39             |
          |-------------------------------+----------------------------|
          |            Ground             |           pin 1            |
          |-------------------------------+----------------------------|
          |             Power             |           pin 1            |
          |-------------------------------+----------------------------|
          |        Hard drive LED         |           pin 3            |
          |-------------------------------+----------------------------|
          |           Not used            |           pin 4            |
          |-------------------------------+----------------------------|
          |             Power             |           pin 5            |
          |-------------------------------+----------------------------|
          |            Ground             |           pin 6            |
          |-------------------------------+----------------------------|
          |           Turbo LED           |           pin 7            |
          |-------------------------------+----------------------------|
          |       Keyboard inhibit        |           pin 8            |
          |-------------------------------+----------------------------|
          |             Power             |           pin 9            |
          |-------------------------------+----------------------------|
          |         Reset button          |           pin 10           |
          +------------------------------------------------------------+