| 摘要 |
In an information processing system operable in response to a branch condition signal which is representative of branch conditions and which is divisible into first and second groups produced a first and second output groups, a preliminary branch selection circuit selects either one of the first and the second output groups in response to a predetermined signal as a selected output group. A specific one of the branch conditions is selected from the selected output group by a first selection switch in response to a branch condition selecting signal produced from a microinstruction read out of a control memory. A specific branch condition is used to carry out a branch operation. The predetermined signal may be produced by an internal hardware of the information system, a specific microinstruction, specific program instructions, or a combination of a specific program instruction and a specific microinstruction.
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