The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 21, 1997

Filed:

Nov. 21, 1994
Applicant:
Inventors:

Mark A Herdeg, Leominster, MA (US);

Michael V Iles, Hampshire, GB;

Assignee:

Digital Equipment Corporation, Maynard, MA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
395500 ; 395800 ; 39518314 ; 395704 ; 364578 ;
Abstract

A computer system embodies a first hardware (X) architecture for providing an X domain for an X code. The computer system includes a system for simulating a second hardware (Y) architecture providing a Y domain for Y code and for executing the Y code, and a debugger operable in the Y domain for debugging the X and Y codes. The simulating system includes a sub-system for providing support services for the debugger to enable it to debug the Y code, including modification of Y machine state and setting of breakpoints. The computer system also includes a sub-system for generating a call for cross-domain memory data access under predetermined conditions, such as direct memory access failures.


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