+-------+-------+---------------------------------------------+
  | Bits. |Measure|Single Inline Memory - Module Definition     |
  |3 2 1 0| -ment |                                             |
  +-------+-------+---------------------------------------------+
  | 0000  | XXXX  |4MB 80-ns IBM                                |
  | 0000  | XXXX  |8MB 60-ns Industry standard                  |
  +-------+-------+---------------------------------------------+
  | 0001  | XXX.  |2MB 100-ns IBM                               |
  +-------+-------+---------------------------------------------+
  | 0010  | XX.X  |1MB 100-ns IBM                               |
  +-------+-------+---------------------------------------------+
  | 0011  | XX..  |16MB 70-ns IBM ECC                           |
  | 0011  | XX..  |4MB 85-ns IBM L40SX only                     |
  +-------+-------+---------------------------------------------+
  | 0100  | X.XX  |4MB 70-ns IBM                                |
  | 0100  | X.XX  |4MB 80-ns Industry standard                  |
  +-------+-------+---------------------------------------------+
  | 0101  | X.X.  |2MB 85-ns IBM                                |
  | 0101  | X.X.  |2MB 80-ns Industry standard                  |
  | 0101  | X.X.  |32MB 80-ns Industry standard                 |
  +-------+-------+---------------------------------------------+
  | 0110  | X..X  |1MB 85-ns IBM                                |
  | 0110  | X..X  |1MB 80-ns Industry standard                  |
  | 0110  | X..X  |16MB 80-ns Industry standard                 |
  +-------+-------+---------------------------------------------+
  | 0111  | X...  |8MB 80-ns Industry standard                  |
  +-------+-------+---------------------------------------------+
  | 1000  | .XXX  |8MB 80-ns IBM                                |
  | 1000  | .XXX  |4MB 70-ns Industry standard                  |
  +-------+-------+---------------------------------------------+
  | 1001  | .XX.  |2MB 80-ns IBM                                |
  | 1001  | .XX.  |2MB 70-ns Industry standard                  |
  | 1001  | .XX.  |32MB 70-ns Industry standard                 |
  +-------+-------+---------------------------------------------+
  | 1010  | .X.X  |1MB 70-ns Industry standard                  |
  | 1010  | .X.X  |16MB 70-ns Industry standard                 |
  +-------+-------+---------------------------------------------+
  | 1011  | .X..  |8MB 70-ns IBM and Industry standard          |
  +-------+-------+---------------------------------------------+
  | 1100  | ..XX  |2MB 70-ns IBM                                |
  | 1100  | ..XX  |4MB 60-ns Industry standard                  |
  +-------+-------+---------------------------------------------+
  | 1101  | ..X.  |32MB 60-ns Industry standard                 |
  +-------+-------+---------------------------------------------+
  | 1110  | ...X  |16MB 60-ns Industry standard                 |
  +-------+-------+---------------------------------------------+
  | 1111  |       |Connector is empty                           |
  +-------+-------+---------------------------------------------+