| 摘要 |
PURPOSE:To execute the storing operation and execution of a command word in parallel by adding identifiers to respective command words to be chained, and only when the identifier is detected from the command word inputted to an I/O interface device, executing the command word. CONSTITUTION:The titled device is provided with an ID adding means 5 for adding identifiers indicating that respective command words to be chained are already stored to the command words at the time of storing the command words generated from a command word generating means 1 in a main storage means 3 and a control means 6 for activating an I/O interface device 4 and executing the chained command words only when the ID is detected from each command word sent to a bus 2. Only when the identifier is detected from the command word read out to the bus 2, the command chain is executed. Consequently, the execution of the command chain and the addition of a new command word can be executed in parallel. |
