Microword address branching bit arrangement
    2.
    发明授权
    Microword address branching bit arrangement 失效
    微字地址分支位布置

    公开(公告)号:US4124893A

    公开(公告)日:1978-11-07

    申请号:US733558

    申请日:1976-10-18

    CPC分类号: G06F9/268

    摘要: A digital computing system includes an addressable read only memory for storing microprogram control words. A plurality of the microprogram control words each include a predetermined bit used for branching. When the predetermined bit within a control word is not set, the next microprogram control word is read from the next microprogram memory address. When the predetermined bit is set, the next microprogram word is read from the microprogram memory address having a value which corresponds to the next address plus a weighted value of the predetermined bit.

    摘要翻译: 数字计算系统包括用于存储微程序控制字的可寻址只读存储器。 多个微程序控制字各自包括用于分支的预定位。 当未设置控制字中的预定位时,从下一个微程序存储器地址读取下一个微程序控制字。 当预定位被设置时,从具有对应于下一个地址的值加上预定位的加权值的微程序存储器地址读取下一个微程序字。

    ROM-initializing apparatus
    3.
    发明授权
    ROM-initializing apparatus 失效
    ROM初始化装置

    公开(公告)号:US4087857A

    公开(公告)日:1978-05-02

    申请号:US729066

    申请日:1976-10-04

    IPC分类号: G06F9/22 G06F9/26 G06F9/16

    CPC分类号: G06F9/268

    摘要: A method and an apparatus for improving the speed of executing instructions and reducing the microprogram memory requirements in a conventional digital computer system by eliminating a ROM address register for addressing microwords. The method or apparatus incorporates the use of a predetermined bit position in the microinstruction word which is set to a binary one when the microword is the last microword of an executing microprogram. The apparatus is responsive to the electronic representation of the binary one signal to cause the microinstruction execution sequence to branch to a predetermined location in the microprogram memory for execution of the following microinstruction; thus eliminating one ROM address register and at least one step in returning to a common address for starting the execution of another microprogram.

    摘要翻译: 一种用于通过消除用于寻址微词的ROM地址寄存器来提高传统数字计算机系统中执行指令的速度并降低微程序存储器要求的方法和装置。 该方法或装置包括在微指令字中使用预定位位置,当微字是执行微程序的最后一个微时字时,微指令字被设置为二进制位。 该装置响应于二进制一个信号的电子表示,以使微指令执行序列分支到微程序存储器中的预定位置,以执行以下微指令; 从而消除一个ROM地址寄存器和至少一个步骤返回到用于开始执行另一个微程序的公共地址。

    Microprogram memory bank addressing system
    4.
    发明授权
    Microprogram memory bank addressing system 失效
    微程序存储库寻址系统

    公开(公告)号:US4118773A

    公开(公告)日:1978-10-03

    申请号:US783532

    申请日:1977-04-01

    摘要: An apparatus for increasing the capacity and speed of access of a large microprogram read only memory. The apparatus incorporates the use of a four bit control field in a microinstruction word which is set into a hardware register to extend the address beyond the normal range of the addressing capability of the microinstruction word. The four bits stored in the hardward register allow one of a maximum of sixteen read only memory banks to be selected. The word in the selected bank is selected by the normal range. This technique also allows the selection of another of the read only memory banks in one machine cycle.

    摘要翻译: 一种用于增加大型微程序只读存储器的访问容量和速度的装置。 该装置包括在微指令字中使用四位控制字段,其被设置为硬件寄存器,以将该地址扩展超出微指令字的寻址能力的正常范围。 存储在硬寄存器中的四位允许选择最多16个只读存储体中的一个。 所选存储区中的字由正常范围选择。 该技术还允许在一个机器周期中选择另一个只读存储体。

    Microprogram splatter return apparatus
    5.
    发明授权
    Microprogram splatter return apparatus 失效
    微程序飞溅返回装置

    公开(公告)号:US4107774A

    公开(公告)日:1978-08-15

    申请号:US729065

    申请日:1976-10-04

    IPC分类号: G06F9/22 G06F9/26 G06F9/16

    CPC分类号: G06F9/268

    摘要: A method and an apparatus for improving the speed of executing instructions and reducing the microprogram memory requirements in a conventional digital computer system. The method or apparatus incorporates the use of a predetermined bit position in the microinstruction word which is set to a binary one when the microword is the last microword of an executing microprogram. The apparatus is responsive to the electronic representation of the binary one signal to cause the microinstruction execution sequence to branch to a predetermined location in the microprogram memory for execution of the following microinstruction; thus, eliminating at least one step in returning to a common address for starting the execution of another microprogram.

    摘要翻译: 一种用于在常规数字计算机系统中提高执行指令的速度并降低微程序存储器要求的方法和装置。 该方法或装置包括在微指令字中使用预定位位置,当微字是执行微程序的最后一个微时字时,微指令字被设置为二进制位。 该装置响应于二进制一个信号的电子表示,以使微指令执行序列分支到微程序存储器中的预定位置,以执行以下微指令; 因此,消除了至少一个步骤来返回到用于开始执行另一个微程序的公共地址。

    Aperture control system for printed circuit board fabrication
    6.
    发明授权
    Aperture control system for printed circuit board fabrication 失效
    用于印刷电路板制造的孔径控制系统

    公开(公告)号:US5751594A

    公开(公告)日:1998-05-12

    申请号:US33277

    申请日:1993-03-16

    IPC分类号: H05K3/00 G06F17/50

    CPC分类号: H05K3/0002 H05K2203/056

    摘要: An aperture control system comprising a computer aided design workstation for generating CAD aperture data, a data converter for reading the aperture data and generating, in response to the aperture data, converted aperture data, and a PCB optical, laser or other suitable plotter for generating a mask from the converted aperture data.

    摘要翻译: 一种孔径控制系统,包括用于产生CAD孔径数据的计算机辅助设计工作站,用于读取孔径数据并响应于孔径数据产生转换的孔径数据的数据转换器以及用于产生的PCB光学,激光或其它合适的绘图仪 来自转换的孔径数据的掩码。

    Overflow detector for anticipating producing invalid operands resulting
from performing shift operations on such operands
    7.
    发明授权
    Overflow detector for anticipating producing invalid operands resulting from performing shift operations on such operands 失效
    溢出检测器,用于预期产生由这些操作数执行移位操作而产生的无效操作数

    公开(公告)号:US5231600A

    公开(公告)日:1993-07-27

    申请号:US511125

    申请日:1990-04-19

    IPC分类号: G06F5/01 G06F7/48

    CPC分类号: G06F5/01 G06F7/48 G06F7/4991

    摘要: Overflow detector connects in parallel with a shifter to receive the bits of an operand to be shifted for detecting an overflow condition by defining the location of the operand sign bit and detecting a predetermined change in operand bit position value. The detector generates a binary value indicating the bit position where the change occurred. This value is then compared with a value designating the number of shifts to be performed on the operand by the shifter. When the number of shifts is greater or equal to the binary value denoting the bit position, the detector signals the presence of an overflow condition.

    摘要翻译: 溢出检测器与移位器并联连接,以通过定义操作数符号位的位置并检测操作数位位置值的预定变化来接收要移位的操作数的位以检测溢出条件。 检测器产生一个二进制值,指示发生变化的位位置。 然后将该值与指定由移位器对操作数执行的移位数的值进行比较。 当换档次数大于或等于表示位位置的二进制值时,检测器发出溢出条件的信号。