Page 691 - Engineering Digital Design
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Sanity













                         Start maximum delay
                             LDZERO




                             Issue step                               Issue step
                               STEP                                     STEP
                          Enable up-counter                        Enable up-counter
                              LDDLY                                    LDDLY












                     CIncrement up/dn counter^                  Decrement up/dn counter
                     I        DECDLY        J                          INCDLY
















                 FIGURE 13.41
                 ASM chart for the stepping motor controller used as a thinking tool for the construction of the state
                 diagram.








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