| 摘要 |
A method and system for interfacing a dual port RAM interface system are provided. The system is arranged in an optical transmission unit and used at supervisory/control sections thereof. When a DPRAM is unstable, two CPUs supervise it till settling stable so that a correct information regarding a self-system can be sent to a host supervisory unit. The DPRAM mounted with one of the CPUs is used as a data communication medium. The structure judges that the two CPUs are accessible to the DPRAM for normal writing/reading. If two judgements obtained are normal, data communications are started. |
