Microprocessor with memory error bit correction using ECC codes - has error bit checker generating, storing and checking test data patterns

摘要

The microprocessor has a memory for producing ECC codes for each item of parallel information written into it, storing the code with the information and using the code to perform error correction of information read out. An error bit checker forms a number of test patterns contg. all bit configurations occurring in the memory. The test data are written into the memory and compared with the data read out. USE/ADVANTAGE - Microprocessor, esp. with memory error bit checking using Error Checking and Correction or ECC codes with minimal loading on the CPU.