| 摘要 |
PURPOSE:To load the control storage at a high speed and at the same time to decrease the packing pins by writing repetitively the contents of a control storage loading register and storing the control information in a control storage. CONSTITUTION:A word of a microprogram to be stored is received as a shift-in data 300, and a scan path clock 500 exclusive for loading control storage is continuously received until one word of the microprogram is applied to a control storage loading register 4. Then the contents of the register 4 are written into a control storage 1 via a control storage writing path 700. Hereafter the words of the microprogram are applied one by one into the register 4 and the contents of this register 4 are repetitively written into the storage 1. Thus all microprograms are stored in the storage 1. As a result, the storage 1 is loaded at a high speed and at the same time the number of packing pins can be decreased for a data processor. |
