| 摘要 |
PURPOSE:To normally maintain the operation of a data processor by precedently referring to a specific TLB no hit signal fed from a conversion retrieval buffer (TLB) hit/no hit instruction hit storing part and providing a TLB reference suppression means for outputting the prescribed TLB no hit signal. CONSTITUTION:As for a specific TLB access, it is required that the TLB 6 is not registered without relating to whether a segment page number (SPN) corresponding to a required real address (PAB) is registered or not in the TLB 6. Therefore, on the specific TLB access, the TLB reference suppression signal of '1' level is outputted from the instruction bit storing part of a command register 2 and a signal of '0' level is inputted via an inverter 9 to an AND circuit 10. In this case, when the output of a comparison circuit 8 is either of the TLB hit signal or the TLB no hit signal, the output of the AND circuit 10 is outputted as the no hit signal of the '0' level.
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