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MCECC
Triple (or Greater) Bit Error (Cycle Type = Burst Read or Non-Burst Read)
Cycle Type = Burst Write
5
Single Bit Error (Cycle Type = Non-Burst Write)
Double Bit Error (Cycle Type = Non-Burst Write)
Triple (or Greater) Bit Error (Cycle Type = Non-Burst Write)
Single Bit Error (Cycle Type = Scrub)
5-6
Some of these errors are detected correctly and are treated the same as a
double bit error. The rest could show up as "no error" or "single bit error",
both of which are incorrect.
Because all of the bits are written during a burst write, no checking is done.
Correct the data read from the DRAM, merge with the write data, and write
the correct, merged data to the DRAM.
Terminate the cycle normally. (Assert TA to the local bus.)
Log the error if one has not already been logged.
Notify the local MPU via interrupt if so enabled.
Do not perform the write portion of the cycle. This causes the location to
continue to indicate non-correctable error when accessed.
Terminate the cycle normally. (Assert TA to the local bus.)
Log the error if one has not already been logged.
Notify the local MPU via interrupt if so enabled.
Some of these errors are detected correctly and are treated the same as a
double bit error. The rest could show up as "no error" or "single bit error",
both of which are incorrect.
Write corrected data to the DRAM.
Log the error if one has not already been logged.
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