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Programming Function ID CPU Command Disclosure Number: IPCOM000053165D
Original Publication Date: 1981-Sep-01
Included in the Prior Art Database: 2005-Feb-12

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Fierst, TF Nelson, CB Trachy, JP Wood, SJ [+details]


In the past, computer maintenance concentrated on single, solid hardware failures. An error was recreated, identified, and the fault which led to the error was corrected. This approach does not lend itself well to the handling of software-related failures because the techniques used to recreate hardware errors involve different programs, thereby altering the conditions under which the original error occurred. The following computer instruction allows programs to create on/off status bits to show what function the program is executing and to create a trace of the program functions.