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    • 1. 发明授权
    • Address bit decoding for same adder circuitry for RXE instruction format
with same XBD location as RX format and dis-jointed extended operation
code
    • 地址比特解码用于RXE指令格式的相同加法器电路,具有与RX格式相同的XBD位置和解码的扩展操作码
    • US6105126A
    • 2000-08-15
    • US70359
    • 1998-04-30
    • Mark Anthony CheckRonald M. Smith, Sr.John Stephen LiptayEric Mark SchwarzTimothy John SlegelCharles Franklin Webb
    • Mark Anthony CheckRonald M. Smith, Sr.John Stephen LiptayEric Mark SchwarzTimothy John SlegelCharles Franklin Webb
    • G06F9/355G06F9/30G06F9/318G06F9/38G06F9/34
    • G06F9/355G06F9/30185
    • A computer processor floating point processor six cycle pipeline system where instruction text is fetched prior to the first cycle and decoded during the first cycle for the fetched particular instruction and the base (B) and index (X) register values are read for use in address generation. RXE Instructions are of the RX-type but extended by placing the extension of the operation code beyond the first four bytes of the instruction format and to assign the operation codes in such a way that the machine may determine the exact format from the first 8 bits of the operation code alone. ESA/390 instructions SS, RR; RX; S; RRE; RI; and the new RXE instructions have a format which can be used for fixed point processing as well as floating point processing where instructions of the RXE format have their R1, X2, B2, and D2 fields in the identical positions in said instruction register as in the RX format to enable the processor to determine from the first 8 bits of the operation code alone that an instruction being decoded is an RXE format instruction and the register indexed extensions of the RXE format instruction, after which it gates the correct information to said X-B-D adder. During the second cycle the address add of B+X+Displacement is performed and sent to the cache processor's, and during the third and fourth cycles the cache is respectively accessed and data is returned, and during a fifth cycle execution of the fetched instruction occurs with the result putaway in a sixth cycle.
    • 计算机处理器浮点处理器六循环流水线系统,其中指令文本在第一周期之前获取并且在第一周期期间被解码用于所提取的特定指令,并且基准(B)和索引(X)寄存器值被读取用于地址 代。 RXE指令是RX型,但通过将操作码的扩展置于指令格式的前四个字节之外进行扩展,并以这样的方式分配操作码,使得机器可以从前8位确定确切的格式 的操作代码。 ESA / 390指令SS,RR; RX; S; RRE; RI; 并且新的RXE指令具有可用于固定点处理以及浮点处理的格式,其中RXE格式的指令在所述指令寄存器中的相同位置具有其R1,X2,B2和D2字段,如 RX格式,使处理器能够从操作代码的前8位确定正在解码的指令是RXE格式指令和RXE格式指令的寄存器索引扩展,之后它将正确信息锁定到所述XBD加法器 。 在第二周期期间,执行B + X +位移的地址添加并发送到高速缓存处理器,并且在第三和第四周期期间,分别访问高速缓存并返回数据,并且在第五周期期间执行所取出的指令 结果放在第六个周期。
    • 2. 发明授权
    • Computer processor system for executing RXE format floating point
instructions
    • 用于执行RXE格式浮点指令的计算机处理器系统
    • US6085313A
    • 2000-07-04
    • US070198
    • 1998-04-30
    • Mark Anthony CheckRonald M. Smith, Sr.John Stephen LiptayEric Mark SchwarzTimothy John SlegelCharles Franklin Webb
    • Mark Anthony CheckRonald M. Smith, Sr.John Stephen LiptayEric Mark SchwarzTimothy John SlegelCharles Franklin Webb
    • G06F9/355G06F9/30G06F9/38
    • G06F9/30145
    • A computer processor system having a floating point processor for instructions which are processed in a six cycle pipeline, in which prior to the first cycle of the pipeline an instruction text is fetched, and during the first cycle for the fetched particular instruction it is decoded and the base (B) and index (X) register values are read for use in address generation. Instructions of the RX-type are extended by placing the extension of the operation code beyond the first four bytes of the instruction format and to assign the operation codes in such a way that the machine may determine from the first 8 bits of the operation code alone, the exact format of the instruction. Instructions formats include the ESA/390 instructions SS, RR; RX; S; RRE; RI: and the new RXE instructions. where instructions of the RXE format have their R.sub.1, X.sub.2, B.sub.2, and D.sub.2 fields in the identical positions in said instruction register as in the RX format to enable the processor to determine from the first 8 bits of the operation code alone that an instruction being decoded is an RXE format instruction and the register indexed extensions of the RXE format instruction, after which it gates the correct information to said X-B-D adder. During the second cycle the address add of B+X+Displacement is performed and sent to the cache processor's, and during the third and fourth cycles the cache is respectively accessed and data is returned, and during a fifth cycle execution of the fetched instruction occurs with the result putaway in a sixth cycle.RXE instructions can be used for floating point processing and fixed point processing.
    • 一种计算机处理器系统,具有用于指令的浮点处理器,其在六个周期流水线中被处理,其中在流水线的第一周期之前取出指令文本,并且在所读取的特定指令的第一周期期间对其进行解码, 读取基地址(B)和索引(X)寄存器值以用于地址生成。 通过将操作代码的扩展置于指令格式的前四个字节之外来扩展RX类型的指令,并且以这样的方式分配操作代码,使得机器可以仅从操作代码的前8位确定 ,指令的确切格式。 指令格式包括ESA / 390指令SS,RR; RX; S; RRE; RI:和新的RXE指令。 其中RXE格式的指令在RX格式中在所述指令寄存器中的相同位置具有它们的R1,X2,B2和D2字段,以使处理器仅从操作代码的前8位确定指令为 解码的是RXE格式指令和RXE格式指令的寄存器索引扩展,然后将正确的信息写入所述XBD加法器。 在第二周期期间,执行B + X +位移的地址添加并发送到高速缓存处理器,并且在第三和第四周期期间,分别访问高速缓存并返回数据,并且在第五周期期间执行所提取的指令 结果放在第六个循环中.RXE指令可用于浮点处理和定点处理。
    • 3. 发明授权
    • Processor E-unit to I-unit interface instruction modification with E-unit opcode computer logic in the unit
    • 处理器E单元到I单元接口指令修改,具有E单元操作码计算机逻辑单元
    • US06178495B1
    • 2001-01-23
    • US09070537
    • 1998-04-30
    • Timothy John SlegelMark Anthony Check
    • Timothy John SlegelMark Anthony Check
    • G06F930
    • G06F9/30181G06F9/30145G06F9/328G06F9/3861
    • A computer processor which has a apparatus in its Execution Unit (E-unit) that detects a match between an opcode about to be executed and opcodes programmed into it by the computer manufacturer provides a method for alleviating design deficiencies in the processor. The E-unit further contains a mechanism for transmitting the opcode and a desired action back to the Instruction Unit (I-unit) where it may be compared with the next instruction that is decoded. Furthermore, the E-unit opcode compare logic contains a mechanism for breaking infinite loops that may result. This E-unit opcode compare mechanism, may also be used for other purposes such as detecting invalid opcodes and other exception checking since it may allow for a faster cycle time of the processor than if this logic were implemented in the I-unit.
    • 在其执行单元(E单元)中具有检测待执行的操作码与计算机制造商编程的操作码之间的匹配的计算机处理器提供了一种减轻处理器中的设计缺陷的方法。 E单元还包含用于将操作码和期望动作发送回指令单元(I单元)的机制,在该单元中可以将其与下一个被解码的指令进行比较。 此外,E单元操作码比较逻辑包含用于打破可能导致的无限循环的机制。 该E单元操作码比较机制也可用于其他目的,例如检测无效操作码和其他异常检查,因为与I单元中实现的逻辑相比,它可能允许处理器的周期更快。