(TXT) View Source
       
       # AST RESEARCH, INC.
       
          PREMMIA MS 486
       
          Processor   80486SX/80486DX/ODP486SX/80486DX2/80486DX4/Pentium 
                      Overdrive                                          
          Processor   25/33/50(internal)/66(internal)MHz                 
          Speed       
          Chip Set    AST                                                
          Max.        128MB                                              
          Onboard     
          DRAM        
          Cache       64/256KB                                           
          BIOS        AMI                                                
          Dimensions  330mm x 218mm                                      
          I/O Options Floppy drive interface, IDE interfaces (2),        
                      parallel port, PS/2 mouse port, serial ports (2),  
                      VGA port                                           
          NPU Options None                                               
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | VGA port          |   CN1    | External battery |   J26    |
          |-------------------+----------+------------------+----------|
          | Parallel port     |   CN2    | Speaker          |   J27    |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |   CN3    | Chassis fan      |   J28    |
          |                   |          | power            |          |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |   CN4    | Front panel      |   J29    |
          |                   |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | PS/2 mouse port   |   CN5    | Chassis fan      |   J32    |
          |                   |          | power            |          |
          |-------------------+----------+------------------+----------|
          | IDE interface 2   |   J22    | IDE interface    |   J40    |
          |                   |          | LED              |          |
          |-------------------+----------+------------------+----------|
          | IDE interface 1   |   J23    | Riser Card       |   SL1    |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |   J24    |                  |          |
          | interface         |          |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | » | Cache type select write   |      E1       |    Open    |
          |   | back                      |               |            |
          |---+---------------------------+---------------+------------|
          |   | Cache type select write   |      E1       |   Closed   |
          |   | through                   |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |      E6       | pins 1 & 2 |
          |   | not alter                 |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | CMOS memory normal        |      E8       |    Open    |
          |---+---------------------------+---------------+------------|
          |   | CMOS memory clear         |      E8       |   Closed   |
          |---+---------------------------+---------------+------------|
          | » | Flash BIOS write protect  |     SW1/1     |    Off     |
          |   | enabled                   |               |            |
          |---+---------------------------+---------------+------------|
          |   | Flash BIOS write protect  |     SW1/1     |     On     |
          |   | disabled                  |               |            |
          |---+---------------------------+---------------+------------|
          | » | Password enabled          |     SW1/2     |     On     |
          |---+---------------------------+---------------+------------|
          |   | Password disabled         |     SW1/2     |    Off     |
          |---+---------------------------+---------------+------------|
          | » | Monitor type select color |     SW1/3     |     On     |
          |---+---------------------------+---------------+------------|
          |   | Monitor type select       |     SW1/3     |    Off     |
          |   | monochrome                |               |            |
          |---+---------------------------+---------------+------------|
          | » | System setup enabled      |     SW1/4     |     On     |
          |---+---------------------------+---------------+------------|
          |   | system setup disabled     |     SW1/4     |    Off     |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/5     |    Off     |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/6     |    Off     |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/7     |    Off     |
          |   | not alter                 |               |            |
          |---+---------------------------+---------------+------------|
          | » | Factory configured - do   |     SW1/8     |    Off     |
          |   | not alter                 |               |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 2MB  | (1) 256K x  | (1) 256K x  |    NONE    |    NONE    |
          |      |     36      |     36      |            |            |
          |------+-------------+-------------+------------+------------|
          | 3MB  | (1) 256K x  | (1) 256K x  | (1) 256K x |    NONE    |
          |      |     36      |     36      |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 256K x  | (1) 256K x  | (1) 256K x | (1) 256K x |
          |      |     36      |     36      |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 9MB  | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 12MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 4M x 36 |    NONE     |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 33MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 34MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | (1) 256K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 36MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 49MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  | (1) 256K x |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 8M x 36 | (1) 8M x 36 |    NONE    |    NONE    |
          |------+-------------+-------------+------------+------------|
          | 65MB | (1) 8M x 36 | (1) 8M x 36 | (1) 256K x |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 66MB | (1) 8M x 36 | (1) 8M x 36 | (1) 256K x | (1) 256K x |
          |      |             |             |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
          |-------+-------------+------------+------------+------------|
          | 68MB  | (1) 8M x 36 |  (1) 8M x  |  (1) 1M x  |    NONE    |
          |       |             |     36     |     36     |            |
          |-------+-------------+------------+------------+------------|
          | 72MB  | (1) 8M x 36 |  (1) 8M x  |  (1) 1M x  |  (1) 1M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 96MB  | (1) 8M x 36 |  (1) 8M x  |  (1) 8M x  |    NONE    |
          |       |             |     36     |     36     |            |
          |-------+-------------+------------+------------+------------|
          | 128MB | (1) 8M x 36 |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |
          |       |             |     36     |     36     |     36     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |            Size             |              E5              |
          |-----------------------------+------------------------------|
          |            64KB             |             Open             |
          |-----------------------------+------------------------------|
          |            256KB            |            Closed            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |        Type        |  E1  |     E2     |     E3     |  E4  |
          |--------------------+------+------------+------------+------|
          |   80486SX (PQFP)   | Open | pins 2 & 3 | pins 1 & 2 | Open |
          |                    |      |   closed   |   closed   |      |
          |--------------------+------+------------+------------+------|
          |      ODP486SX      | Open | pins 2 & 3 | pins 1 & 2 | Open |
          |                    |      |   closed   |   closed   |      |
          |--------------------+------+------------+------------+------|
          |   80486DX (write   | Open | pins 1 & 2 | pins 2 & 3 | Open |
          |       back)        |      |   closed   |   closed   |      |
          |--------------------+------+------------+------------+------|
          |    80486DX/DX2     | Open | pins 1 & 2 | pins 1 & 2 | Open |
          |                    |      |   closed   |   closed   |      |
          |--------------------+------+------------+------------+------|
          |      80486DX4      | Open | pins 1 & 2 | pins 1 & 2 | Open |
          |                    |      |   closed   |   closed   |      |
          |--------------------+------+------------+------------+------|
          | Pentium Overdrive  | Open | pins 2 & 3 | pins 2 & 3 | Open |
          |                    |      |   closed   |   closed   |      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |       Speed       |         E7         |        E9         |
          |-------------------+--------------------+-------------------|
          |       25MHz       | pins 1 & 2 closed  |      Closed       |
          |-------------------+--------------------+-------------------|
          |       33MHz       | pins 2 & 3 closed  |       Open        |
          |-------------------+--------------------+-------------------|
          |      50iMHz       | pins 1 & 2 closed  |      Closed       |
          |-------------------+--------------------+-------------------|
          |      66iMHz       | pins 2 & 3 closed  |       Open        |
          +------------------------------------------------------------+