| 摘要 |
PURPOSE:To facilitate program control, to reduce program capacity, and to prevent an overrun, by providing a specific interruption level and controlling it by programs with other interruption levels. CONSTITUTION:A microprocessor 1 has interruption levels. In a memory space 2, an interface area 7, FPD (floppy disk) controlling program 8, display controlling program 9, printer controlling program 10, ending processing program 11, and other various programs 12 are stored. In an IO space 3, an FPD controlling register group 13, display controlling register 14, printer controlling register group 15, and flip-flop 16 controllable by a program are stored. The flip-flop 16 is set by interruption processing programs with other interruption levels. |
