| 摘要 |
PURPOSE:To improve the changing efficiency of a microprogram by referring to the result of comparison between the group number of each entry of a designated data table and the group code when a changing instruction is delivered for a microprogram. CONSTITUTION:The group code and the operand address given by a changing instruction of microprogram are set through an arithmetic circuit via a signal line 15-3. A comparator 136 compares the group code stored in a group code register 135 with the group number stored in a data register 132. The microaddress of a data register 133 is applied to a a control memory 11 as a writing address via a signal line 14-2. The changing data of a data register 134 is applied to the memory 11 as the writing data via a signal lie 14-1. Then the information on replacement is written. |
