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    • 8. 发明授权
    • Host computer system emulating target system legacy software and providing for incorporating more powerful application program elements into the flow of the legacy software
    • 主机计算机系统模拟目标系统遗留软件,并提供将更强大的应用程序元素并入到传统软件的流程中
    • US07809547B2
    • 2010-10-05
    • US11324052
    • 2005-12-29
    • Russell W. GuenthnerDavid W. SelwayStefan R. BohultClinton B. Eckard
    • Russell W. GuenthnerDavid W. SelwayStefan R. BohultClinton B. Eckard
    • G06F9/455G06F9/45G06F9/44G06F9/00G06F9/04
    • G06F9/455
    • As manufacturers of very fast and powerful commodity processors continue to improve the capabilities of their products, it has become practical to emulate the proprietary hardware and operating systems of powerful older computers on platforms built using commodity processors such that the manufacturers of the older computers can provide new systems which allow their customers to continue to use their highly-regarded proprietary legacy software on state-of-the-art new computer systems by emulating the older computer in software that runs on the new systems. In an example of the subject invention, a 64-bit Cobol Virtual Machine instruction provides the capability of adding to or improving the performance of legacy 36-bit Cobol code. Legacy Cobol instructions can be selectively diverted, in the host CPU, to a 64 bit Virtual Machine Implementation. The output legacy and new Cobol code is compiled in a dedicated implementation of the Cobol compiler, and the output of the special purpose compiler is emulated in a special purpose software emulator, separate from the main software emulator that handles the normal 36-bit stream of legacy code.
    • 随着非常快速和强大的商品处理器的制造商不断提高其产品的能力,在使用商品处理器构建的平台上模拟强大的旧版计算机的专有硬件和操作系统变得务实,这样老式计算机的制造商可以提供 新系统允许他们的客户通过在新系统上运行的软件模拟旧的计算机,继续使用他们备受赞誉的专有遗留软件在最先进的新计算机系统上。 在本发明的一个示例中,64位Cobol虚拟机指令提供添加或改善传统36位Cobol代码的性能的能力。 传统Cobol指令可以在主机CPU中选择性转移到64位虚拟机实现。 输出遗留和新的Cobol代码是在Cobol编译器的专用实现中编译的,专用编译器的输出在专用软件仿真器中仿真,与主软件仿真器分离,处理正常的36位流 遗留代码
    • 10. 发明授权
    • Performance improvement for software emulation of central processor unit utilizing signal handler
    • 使用信号处理器的中央处理器单元的软件仿真性能改进
    • US07684973B2
    • 2010-03-23
    • US11324050
    • 2005-12-29
    • Russell W. GuenthnerStefan R. BohultDavid W. SelwayClinton B. Eckard
    • Russell W. GuenthnerStefan R. BohultDavid W. SelwayClinton B. Eckard
    • G06F9/455
    • G06F9/30174G06F9/45504
    • As fast and powerful commodity processors have been developed, it has become practical to emulate on platforms built using commodity processors the proprietary hardware systems of powerful older computers. High performance is typically a key requirement for a system even when built using emulation software. In a hardware design many special cases and conditions which may cause exceptions are detected by logic operating in parallel with the instruction execution. In software these checks can cost extra cycles of processor time during emulation of each instruction and be a significant detriment to performance. Avoiding some of these checks by relying upon the underlying hardware checks of the host system and then using a signal handler and special software to recover from these signals is a way to improve the performance and simplify the coding of the software emulation system.
    • 随着快速而强大的商品处理器的开发,在使用商用处理器的平台上模拟强大的老式计算机的专有硬件系统已成为现实。 即使使用仿真软件构建,高性能通常也是系统的关键要求。 在硬件设计中,许多可能导致异常的特殊情况和条件可以通过与指令执行并行运行的逻辑来检测。 在软件中,这些检查可以在每个指令的仿真期间花费额外的处理器时间周期,并且对性能造成重大的损害。 通过依靠主机系统的基础硬件检查,然后使用信号处理程序和特殊软件从这些信号中恢复来避免其中一些检查是提高性能并简化软件仿真系统编码的一种方式。