Method for Saving Operating Parameter Data
Original Publication Date: 1987-Mar-01
Included in the Prior Art Database: 2005-Feb-01
Data representing selected machine-operating parameters in digital equipment incorporating a microprocessor and diskette storage can be readily stored when power is terminated by utilizing a high priority interrupt to save those data. An arrangement by which microcode architecture that is organized with a limited number of interrupt levels can save operating parameter data for a printer automatically at POWER OFF is described with reference to the figure. The several microcode units have the following functions: A. Machine Check/Program Check (MC/PC) Code 10 with interrupt priority O (highest) recognizes the POWER OFF interrupt and performs a "soft reset" of selected hardware in the microprocessor unit to clear the interrupt.