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    • 31. 发明授权
    • Pre-prefetching target of following branch instruction based on past history
    • 根据过去的历史预先预取跟随分支指令的目标
    • US06912650B2
    • 2005-06-28
    • US09793559
    • 2001-02-27
    • Masaki UkaiAiichiro Inoue
    • Masaki UkaiAiichiro Inoue
    • G06F9/00G06F9/38
    • G06F9/3804G06F9/3802
    • An instruction control apparatus, and method, used with a device including a cache memory, a lower memory, an instruction fetch device issuing an instruction fetch request for a target of a first branch instruction to the cache memory, and an instruction control device processing a instruction sequence stored in the cache memory. The apparatus and method pre-prefetch a target instruction sequence for a target of a second branch instruction. A predetermined instruction sequence based on a past history is preliminarily transferred from the lower memory to the cache memory when the target instruction sequence for the target of the first branch instruction is not in the cache memory.
    • 一种指令控制装置和方法,与包括高速缓冲存储器,下位存储器,向第一转移指令的指令取出请求发出到高速缓冲存储器的指令取出装置的装置一起使用,以及指令控制装置, 存储在高速缓冲存储器中的指令序列。 该装置和方法为第二分支指令的目标预预取目标指令序列。 当第一分支指令的目标的目标指令序列不在高速缓冲存储器中时,基于过去历史的预定指令序列被预先从下部存储器传送到高速缓冲存储器。
    • 32. 发明授权
    • Virtual storage address space access control
    • 虚拟存储地址空间访问控制
    • US06606696B1
    • 2003-08-12
    • US09461293
    • 1999-12-15
    • Hiroshi KawanoAiichiro Inoue
    • Hiroshi KawanoAiichiro Inoue
    • G06F1210
    • G06F12/1036G06F12/109G06F12/1475
    • An AR map has entries of the same number as the AR's and is accessed by an ARN. In each of the map entries, there are entered: an ID of a pertinent entry in an STD array; and a flag representing valid or invalid of the map entry. Into an ALET holding part, there are stored ALET's corresponding to STD's in the STD array, respectively. Upon AR access, if an entry in the AR map which corresponds to a designated AR is valid, an ID included in the valid entry is outputted to a storage controlling part. In case that the corresponding entry in the AR map is invalid, if the ALET holding part stores an ALET identical with an ALET of the designated AR, an ID of STD corresponding to the stored ALET is stored into the AR map.
    • AR地图具有与AR相同号码的条目,并由ARN访问。 在每个地图条目中,输入:STD数组中相关条目的ID; 以及表示地图条目的有效或无效的标志。 进入ALET保持部分,分别存储对应于STD数组中的STD的ALET。 在AR访问中,如果对应于指定的AR的AR映射中的条目有效,则包含在有效条目中的ID被输出到存储控制部分。 在AR映射对应的条目无效的情况下,如果ALET保持部分存储与指定AR的ALET相同的ALET,则与ARET对应的STD的ID被存储到AR映射中。
    • 33. 发明授权
    • Circuit for executing conditional branch instructions in pipeline process
    • 在流水线过程中执行条件分支指令的电路
    • US5408620A
    • 1995-04-18
    • US828701
    • 1992-01-31
    • Takeo AsakawaAiichiro Inoue
    • Takeo AsakawaAiichiro Inoue
    • G06F9/32G06F9/38
    • G06F9/30094G06F9/3844
    • A circuit for executing conditional branch instructions in a pipeline process comprises registers for retaining condition codes settled set or determined at different stages, respectively, registers for retaining pipeline tags identifying instructions at the respective stages and indicating the stage where the condition codes are settled or set by the instructions, and a branch controller for deciding whether the settlement of condition codes for conditional branch instructions existing at the respective stage has occured responsive to the tags in a plurality of stages, and for selecting the settled condition codes from among the condition codes stored in the registers and indicating whether a branch should be performed.
    • 用于在流水线处理中执行条件分支指令的电路分别包括用于保存在不同阶段设置或确定的条件代码的寄存器,用于保留在各个阶段识别指令的流水线标签的寄存器,并且指示状态代码被结算或设置的阶段 以及分支控制器,用于判定是否已经发生存在于各个阶段的条件转移指令的条件码的结算,以响应于多个级中的标签,并且从存储的条件代码中选择确定的条件代码 在寄存器中并指示是否应该执行分支。