DSP Core Illegal Address Masking for Real-Time Response

The patent applies preliminary action by pre-configuring illegal address mask registers before instruction execution. The mask registers are initialized with valid address ranges, and the comparison mechanism is pre-established in the instruction pipeline. When an instruction is fetched, its address is immediately compared against the masked range without requiring timeout determination, thus preventing no-response issues before they occur while maintaining fast system response.

The patent extracts the no-response handling mechanism from the instruction pipeline by implementing address masking at the fetch stage. Instead of allowing instructions to proceed through the full pipeline and then detecting no-response conditions (which would require complex timeout determination), the solution extracts and validates addresses early using simple comparator logic against pre-configured mask registers, eliminating the need for complex timeout mechanisms.

The patent applies preliminary action by performing address validation at the fetch stage before instructions enter the execution pipeline. The comparator unit immediately compares fetched instruction addresses against the illegal address mask registers, blocking invalid addresses before they can cause wrong-position operations. This preliminary filtering prevents wasted pipeline cycles and reduces transmission overhead while maintaining productive instruction flow.