| 摘要 |
PURPOSE:To decrease the burden of a host processor by generating plural mask addresses on the basis of input data from a service processor. CONSTITUTION:Since a service processor 12 can not simultaneously read data from an (m)-number of slave processors 20, data, for which the (m)-number of the slave processors 20 to be the subject of reading are designated, are inputted to a mask address generating device 13. The mask address generating device 13 generates the (m)-number of addresses for a memory 15, in which the mask address is stored, from the inputted data by a priority encoder 14. The (m)- number of the addresses are successively read and the buffering of the addresses is executed to a FIFO memory 16. Then, the addresses are set one by one to a master register 14 in correspondence to a reading request from the service processor 12. Thus, it is enough for a host processor 10 to only once issue a command to include data to designate the slave processor, for which the data is single desired to be read. |
