In reply to chr_sue:
Sorry for the late reply.
we have 3 sequences
first 2 sequences are simply waiting for vdo/map requests from dut.If request comes,some packet will generate.They both have highest priority.
The last sequence is like normal write/read operation.After the operation,we have to wait for some response from dut. The response time is relatively large.In that time, if dut request for vdo/map that should execute.Please suggest