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    • 3. 发明授权
    • Arbitration circuit for a multimedia system
    • 多媒体系统的仲裁电路
    • US5175731A
    • 1992-12-29
    • US626792
    • 1990-12-11
    • Gustavo A. Suarez
    • Gustavo A. Suarez
    • G06F13/42G06F3/14G06F13/374G09G1/16G09G5/14
    • G09G5/14G06F13/374G06F3/14G09G1/167G09G2340/125
    • The invention is an N-bit arbitration circuit which includes N bit subcircuits, each of which provides a single bit output signal of an N-bit arbitration signal. The bit subcircuits include a more significant bit subcircuit and at least significant bit subcircuit. The more significant bit subcircuit includes a gate, which receives a more significant bit priority signal and an arbitration enable signal and provides a more significant bit output of the N-bit arbitration signal, and a pipeline circuit, which receives the more significant bit priority signal, the arbitration enable signal and the more significant bit output and provides a pipelined arbitration enable signal based upon the more significant bit priority signal, the arbitration enable signal and the more significant bit. The least significant bit subcircuit includes a gate, which receives a least significant bit priority signal and the pipelined arbitration enable signal and provides a least significant bit output signal of the N-bit arbitration circuit output signal, and a source enable circuit, which receives the least significant bit arbitration enable signal, the priority signal and the pipelined arbitration enable signal and provides a source enable signal based upon the least significant bit arbitration indication signal and the pipelined arbitration signal.
    • 6. 发明授权
    • Fault tolerant data processing system
    • 容错数据处理系统
    • US5325517A
    • 1994-06-28
    • US353116
    • 1989-05-17
    • Ernest D. BakerJohn M. Dinwiddie, Jr.Lonnie E. GriceJames M. JoyceJohn M. LoffredoKenneth R. SandersonGustavo A. Suarez
    • Ernest D. BakerJohn M. Dinwiddie, Jr.Lonnie E. GriceJames M. JoyceJohn M. LoffredoKenneth R. SandersonGustavo A. Suarez
    • G06F11/18G06F11/00G06F11/10G06F11/16G06F11/20G06F15/16G06F15/173G06F15/177
    • G06F11/1641G06F11/10G06F11/1008G06F11/1482G06F11/16G06F11/20
    • The functions of two virtual operating systems (e.g., S/370 VM, VSE or IX370 and S/88 OS) are merged into one physical system. Partner pairs of S/88 processors run the S/88 OS and handle the fault tolerant and single system image aspects of the system. One or more partner pairs of S/370 processors are coupled to corresponding S/88 processors directly and through the S/88 bus. Each S/370 processor is allocated from 1 to 16 megabytes of contiguous storage from the S/88 main storage. Each S/370 virtual operating system thinks its memory allocation starts at address 0, and it manages its memory through normal S/370 dynamic memory allocation and paging techniques. The S/370 is limit checked to prevent the S/370 from accessing S/88 memory space. The S/88 Operating System is the master over all system hardware and I/O devices. The S/88 processors access the S/370 address space in direct response to a S/88 application program so that the S/88 may move I/O data into the S/370 I/O buffers and process the S/370 I/O operations. The S/88 and S/370 peer processor pairs execute their respective Operating Systems in a single system environment without significant rewriting of either operating system. Neither operating system is aware of the other operating system nor the other processor pairs.
    • 两个虚拟操作系统(例如,S / 370VM,VSE或IX370和S / 88OS)的功能被合并到一个物理系统中。 S / 88处理器的合作伙伴对运行S / 88操作系统,并处理系统的容错和单系统映像方面。 S / 370处理器的一个或多个伙伴对直接和通过S / 88总线耦合到对应的S / 88处理器。 每个S / 370处理器从S / 88主存储器分配从1到16兆字节的连续存储。 每个S / 370虚拟操作系统认为其存储器分配从地址0开始,并且通过正常的S / 370动态存储器分配和寻呼技术管理其存储器。 S / 370被限制检查以防止S / 370访问S / 88存储器空间。 S / 88操作系统是所有系统硬件和I / O设备的主控。 S / 88处理器直接响应S / 88应用程序来访问S / 370地址空间,以便S / 88可以将I / O数据移动到S / 370 I / O缓冲器中并处理S / 370 I / O操作。 S / 88和S / 370对等体处理器对在单个系统环境中执行其各自的操作系统,而不会显着地重写任一操作系统。 操作系统都不知道其他操作系统和其他处理器对。