| 摘要 |
PURPOSE:To attain a soft error check by breaking the part of a read data given from a RAM in the stage of the storage of it to a data register. CONSTITUTION:An inverting circuit 14 is set between a RAM10 and a read register (RDR)12. A counter 20 works at every time the RAM10 receives a read access for the extraction of the output of the highest stage. A production circuit 22 produces the pulse '1' of the prescribed width. This pulse is delivered to an inversion indicating circuit 16. When an inversion mode is indicated by a signal source 18, the inversion is given to a prescribed access frequency to produce a state similar to an error generation mode. |
