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       # AST RESEARCH, INC.
       
          FASTboard/386 for the Premium/286
       
          Models 202143-00x
       
          Processor             80286/80386DX                            
          Processor Speed       10MHz                                    
          Chip Set              AST                                      
          Max. Onboard DRAM     8MB                                      
          SRAM Cache            None                                     
          BIOS                  AST                                      
          Dimensions            330mm x 218mm                            
          I/O Options           None                                     
          NPU Options           80387                                    
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function              |   Jumper    | Position |
          |-----------------------------------+-------------+----------|
          | »  | NPU disabled                 |     E1      |   open   |
          |----+------------------------------+-------------+----------|
          |    | NPU enabled                  |     E1      |  closed  |
          |----+------------------------------+-------------+----------|
          | »  | Factory configured - do not  |     E2      |   open   |
          |    | alter                        |             |          |
          |----+------------------------------+-------------+----------|
          | »  | Parity check enabled         | SW1/switch  |   open   |
          |    |                              |      4      |          |
          |----+------------------------------+-------------+----------|
          |    | Parity check disabled        | SW1/switch  |  closed  |
          |    |                              |      4      |          |
          |------------------------------------------------------------|
          | Note:SW2 is used to toggle between the 80286 and the 80386 |
          | CPUs at power-on.                                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size  | SW1/switch | SW1/switch | SW1/switch | Bank | Bank |
          |       |     1      |     2      |     3      |  0   |  1   |
          |-------+------------+------------+------------+------+------|
          |  1MB  |    open    |    open    |    open    | (4)  | NONE |
          |       |            |            |            | 256K |      |
          |       |            |            |            | x 9  |      |
          |-------+------------+------------+------------+------+------|
          |  2MB  |   closed   |    open    |    open    | (4)  | (4)  |
          |       |            |            |            | 256K | 256K |
          |       |            |            |            | x 9  | x 9  |
          |-------+------------+------------+------------+------+------|
          |  4MB  |    open    |   closed   |    open    | (4)  | NONE |
          |       |            |            |            | 1M x |      |
          |       |            |            |            |  9   |      |
          |-------+------------+------------+------------+------+------|
          |  5MB  |   closed   |    open    |   closed   | (4)  | (4)  |
          |       |            |            |            | 256K | 1M x |
          |       |            |            |            | x 9  |  9   |
          |-------+------------+------------+------------+------+------|
          |  8MB  |   closed   |   closed   |   closed   | (4)  | (4)  |
          |       |            |            |            | 1M x | 1M x |
          |       |            |            |            |  9   |  9   |
          |------------------------------------------------------------|
          | Note: When using the FASTboard/386 in a Premium/286 with a |
          | FASTram Memory Board installed, SW1/switch 5 should be in  |
          | the open position and SW1/switch 6 to SW1/switch 10 should |
          | be left in their default positions on the FASTram Memory   |
          | Board.                                                     |
          +------------------------------------------------------------+