| 摘要 |
PURPOSE:To store control data and to speed up control with small control and storage capacity, by providing plural control and storage circuits, and selecting read control data and controlling access to the respective storage circuits simultaneously. CONSTITUTION:The control storage circuits CS1 and CS2 are each stored with an address part (a) for indicating the next read address, control data part (b) for generating signals for controlling respective parts, and branch condition part (c) for indicating branch condition; the control data part (b) and btanch condition part (c) are selected by gate circuits G3 and G4 and set in a control data register CSDR. Address registers AD1 and AD2 are used for accessing the control and storage circuits CS1 and CS2, and either of data of the read address following where an instruction code OPC is read and mutual address data is selected by the address selecting circuit consisting of gate circuits G1 and G2, etc. |
