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Browse Prior Art Database

Error Handling in Processor-Controlled Printer System

IP.com Disclosure Number: IPCOM000041567D
Original Publication Date: 1984-Feb-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Allen, WH Cory, TM Hurley, PJ Thornton, RA [+details]

Abstract

This article provides for error handling in a processor-controlled printer system. It offers an efficient approach to the handling of errors and the storage or saving of such errors for subsequent debugging operations. It involves the looking up of the position of an error in a memory map and then converting the location of the code segment and pointer instruction in the overall memory layout to a C-Sect (control section) origin and location counter to give the particular position in the program. This position is then saved for subsequent debugging purposes. With reference to the figure, there is shown the pertinent portions of a basic I/O system of a controlled printer in a word and data processing system. The status of the printer is maintained in the printer unit control block.