| 摘要 |
PURPOSE:To produce a pseudo fault with a single pseudo fault designating signal by instructing the specific one of plural levels at which the pseudo fault occurs based on the pulse width. CONSTITUTION:When a pseudo fault is produced at level '0', '0' and '0' are set at a pseudo fault designating level register 7 and a pseudo fault indicating flag 6 is set at '1'. Thus the output of a comparator 10 is set at '1' and the clock of a machine advances by a step since the resetting conditions of the flag 6 are satisfied. Then the flag 6 is set at '0' and only an EIF 45 having level '0' is set at '1' to be processed as a parity error of level '0'. As a result, the pseudo faults of all levels can be produced just by supplying the information showing levels to the register 7. |
