专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPS5448459A CONTROL UNIT OF INSTRUCTION ADVANCE FETCH 失效
公开(公告)号：JPS5448459A
公开(公告)日：1979-04-17
申请号：JP11532977
申请日：1977-09-26
申请人： NIPPON ELECTRIC CO
发明人： TSUKIOKA KENICHI
IPC分类号： G06F9/38
摘要： PURPOSE:To directly renew the instruction word advanced fetch made ineffective at the stage of execution preparation, by giving the instruction register holding the instruction word fetched in advance and the function rewritten for the instruction buffer to the control circuit, when the instruction word fetched in advance with the preceding instruction. CONSTITUTION:The instruction register is constituted with at least two blocks, and further, according to the content of the instruction counter 26, the alteration block designation circuit 34 having the function designating vacant blocks from two blocks at least is provided, and according to the operation altering the content of the main memory unit or the high speed buffer memory 11 for the preceding instruction, from the content of the operand address register 27 of preceding instruction and the instruction counter 26, the content alteration instruction of the instruction register 32 and the alteration effective block designation in the instruction register 32 are made, and by enabling to replace only the designated block with the content of the output data register 30, the advance fetch instruction word made ineffective can be renewed directly at the stage of execution.

IPRDB

热门服务

关于我们

友情链接

联系方式