Host computer system emulating target system legacy software...

Data processing: structural design – modeling – simulation – and em – Emulation – Compatibility emulation

Reexamination Certificate

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Details

C703S026000, C712S237000, C717S140000

Reexamination Certificate

active

07809547

ABSTRACT:
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.

REFERENCES:
patent: 5956495 (1999-09-01), Kahle et al.
patent: 6075938 (2000-06-01), Bugnion et al.
patent: 6173248 (2001-01-01), Brauch
patent: 6247172 (2001-06-01), Dunn et al.
patent: 6339752 (2002-01-01), Mann et al.
patent: 6356997 (2002-03-01), Krishnan et al.
patent: 6415436 (2002-07-01), Patel
patent: 6519605 (2003-02-01), Gilgen et al.
patent: 2003/0037030 (2003-02-01), Dutta et al.
patent: 2004/0221274 (2004-11-01), Bross et al.
patent: 2007/0016895 (2007-01-01), Tan
T. Hoppin, “Strategies for Mitigating Risk Related to the Obsolescence of HP 8566/68 Spectrum Analyzers in ATE Systems”, IEEE 2002, pp. 608-620.

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