TASK CONTROLLING METHOD AND STORAGE MEDIUM

PROBLEM TO BE SOLVED: To reduce the size of RAM to which a stack area being the operation area of a task and interruption processing in task control by multi-task constitution realized through the use of a multi task OS being a real-time OS. SOLUTION: When interruption processing is made in the proc...

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Bibliographische Detailangaben
1. Verfasser:	KAWAI MITSUHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CALCULATING COMBUSTION ENGINES COMPUTING CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING CONTROLLING COMBUSTION ENGINES COUNTING ELECTRIC DIGITAL DATA PROCESSING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PERFORMING OPERATIONS PHYSICS REGULATING TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the size of RAM to which a stack area being the operation area of a task and interruption processing in task control by multi-task constitution realized through the use of a multi task OS being a real-time OS. SOLUTION: When interruption processing is made in the processing of a task A, the value of a stack pointer stored in a stack pointer managing area for interruption processing is rewritten to the value (SPA1) of the stack pointer at the time point of interrupting the processing. Next, the stack pointer is moved to SPI0 in a stack area for interruption processing to execute interruption processing and when it is finished, the stack pointer is moved to SPA1 being the value of the stack pointer stored in a stack pointer managing area for interruption processing. Since the size of the stack pointer managing area is extremely small at this time, the size of RAM 313 is decided by the total value of the size of the stack area for each task A to C and interruption processing.