| 摘要 |
PURPOSE: A hardwired task scheduler and a method for scheduling of the same are provided to perform a real time process by allocating data memory one according to each task by generating an interrupt signal for loading/storing operating switching and a switch clock signal and by successively repeating loading and storing operations of context data of each task, thereby minimizing a load at a memory access and a time delay caused by the memory access. CONSTITUTION: A CPU(21) controls a reset of a counter(22) for adjusting a performing time of each task and accesses data memories(26-1¯26-n) corresponded to the current task through an address bus(A-BUS) and a data bus(D-BUS) in accordance with an interrupt signal of a clock pattern generating unit(23), and performs loading and storing operations with respect to a context data. The counter(22) resets a clock pattern of the clock pattern generating unit(23) for adjusting the performing time of each task. The corresponding clock pattern generating unit(23) generates an interrupt signal for a loading/storing switching of each task and generates a switch clock signal(SwClk) for selecting a data memory selection corresponded to each task. The corresponding bus switch(24) performs a data memory selection(DM-Sel) for the data memory access of each task in accordance with the switch clock signal(SwClk) and selects and connects data memory(26-1¯26-n) necessary to the next task. The corresponding program memory(25) stores a program commonly used in each task and a routine and a sub routine, and the corresponding data memory(26-1¯26-n) are allocated one by one with respect to each task and stores the context data of the corresponding task.
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