发明名称 |
Information processing system |
摘要 |
An information processing system having a plurality of arithmetic units such as a general instruction arithmetic unit and a floating point instruction arithmetic unit comprises means provided for each of the arithmetic units, for generating a condition code for use in branch judgement of a conditional branch instruction, branch judgement means provided in each arithmetic unit for judging success or failure of a branch of the conditional branch instruction by using the condition generated by the respective code generating means, and a judgement unit decision circuit responsive to the operation state of each arithmetic unit for generating an instruction signal indicating which of the judging means is to be operated to and supplying it to the branch judgement means, whereby branch control is carried out by using either one of the branch judgement results obtained in the respective arithmetic units as a valid one.
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申请公布号 |
US4654785(A) |
申请公布日期 |
1987.03.31 |
申请号 |
US19840637137 |
申请日期 |
1984.08.03 |
申请人 |
HITACHI, LTD. |
发明人 |
NISHIYAMA, TAKAAKI;HASHIMOTO, MASAHIRO |
分类号 |
G06F7/00;G06F9/32;G06F9/38;(IPC1-7):G06F9/42 |
主分类号 |
G06F7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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