\_TABLE I\_
          
             Signal on                  Chip on
             Board                      Kaypro 4
          
             REFRESH                    U48 pin 12
             MUX                        U33 pin 1
             A14                        U33 pin 10
             A15                        U33 pin 11
             RA7                        U20 pin 9
             RA8                        U20 pin 1
             PIO 1                      Pad E29
             PIO 2                      Pad E28
             PIO 3                      Pad E31
          
\_FIGURE 1\_
\l0i          
                         +-----------------------------+
                         |                             |
                         |         +--------+          |
                         |  +------|    7   |- 0v      |
                         |  |     -|    4   |----------+
                         |  |     -|    L   |-
                         |  |     -|    S   |-
                         |  |  0v -|    3   |-
                         +--|------|    9   |-
                            | +5v -|    3  1|----------+----------< RFRSH
                            |      +--------+          |
                            |                          |
                     33R    |      +--------+          |
             RA7  <-- / /---|------|        |- 0v      |
                            +------|    7   |-         |
                         +---------|    4   |-         |
                         |        -|    L   |-         |
                         |        -|    S   |-         |
                         |        -|    1   |-         |
                         |     0v -|    5   |-         |
                         |    +5v -|    8  1|----------+
                         |         +--------+
                         |   
                         |         +--------+
                         +---------|        |- 0v        33R
             PIO 1 >-------------+-|    7   |------------ / /----> RA8
                                 +-|    4   |--------------------< PIO 2
             A14b  >---------------|    L   |- +5v
                               0v -|    S   |--------------------< PIO 3
             A15b  >---------------|    1   |- +5v
                               0v -|    5   |--------------------< MUX
                              +5v -|    3  1|- 0v
                                   +--------+