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       # KINGSTON TECHNOLOGY CORPORATION
       
          MCMASTER MC33PD/MC25PS
       
          Processor           80486SX/80486DX                            
          Processor Speed     25/33MHz                                   
          Chip Set            None (utilizes chipset on PS/2 main board) 
          Max. Onboard DRAM   64MB                                       
          SRAM Cache          128KB                                      
          BIOS                None (utilizes BIOS on PS/2 main board)    
          Dimensions          330mm x 100mm                              
          I/O Options         32-bit VESA local processor slot           
          NPU Options         None                                       
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose                          |        Location         |
          |----------------------------------+-------------------------|
          | 32-bit VESA local processor slot |           S1            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CPU select 80486DX               |  J100  | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CPU select 80486SX               |  J100  | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Microchannel Ready timing        |  J700  | pins 2 & 3 |
          |   | standard                         |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Microchannel Ready timing        |  J700  | pins 1 & 2 |
          |   | modified                         |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Local bus fast write transfer    | J1101  | pins 1 & 2 |
          |   | mode enabled                     |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Local bus fast write transfer    | J1101  | pins 2 & 3 |
          |   | mode disabled                    |        |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Size   |     J801      |      Bank 0      |    Bank 1     |
          |---------+---------------+------------------+---------------|
          |   4MB   |  pins 2 & 3   |  (1) 1024K x 32  |     NONE      |
          |         |    closed     |                  |               |
          |---------+---------------+------------------+---------------|
          |   8MB   |  pins 2 & 3   |  (1) 1024K x 32  |  (1) 1024K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |   8MB   |  pins 2 & 3   |  (1) 2048K x 32  |     NONE      |
          |         |    closed     |                  |               |
          |---------+---------------+------------------+---------------|
          |  12MB   |  pins 2 & 3   |  (1) 2048K x 32  |  (1) 1024K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |  16MB   |  pins 2 & 3   |  (1) 2048K x 32  |  (1) 2048K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |  16MB   |  pins 1 & 2   |  (1) 4096K x 32  |     NONE      |
          |         |    closed     |                  |               |
          |---------+---------------+------------------+---------------|
          |  20MB   |  pins 1 & 2   |  (1) 4096K x 32  |  (1) 1024K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |  24MB   |  pins 1 & 2   |  (1) 4096K x 32  |  (1) 2048K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |  32MB   |  pins 1 & 2   |  (1) 4096K x 32  |  (1) 4096K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |  32MB   |  pins 1 & 2   |  (1) 8192K x 32  |     NONE      |
          |         |    closed     |                  |               |
          |---------+---------------+------------------+---------------|
          |  36MB   |  pins 1 & 2   |  (1) 8192K x 32  |  (1) 1024K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |  40MB   |  pins 1 & 2   |  (1) 8192K x 32  |  (1) 2048K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |  48MB   |  pins 1 & 2   |  (1) 8192K x 32  |  (1) 4096K x  |
          |         |    closed     |                  |      32       |
          |---------+---------------+------------------+---------------|
          |  64MB   |  pins 1 & 2   |  (1) 8192K x 32  |  (1) 8192K x  |
          |         |    closed     |                  |      32       |
          |------------------------------------------------------------|
          | Note:Where available, 36-bit SIMMs can be substituted for  |
          | 32-bit SIMMs.                                              |
          +------------------------------------------------------------+