µCOS-II UCOSII学习笔记2.doc

µCOS-II UCOSII学习笔记2
µC/OS-II UCOSII学习笔记2 [pic]7-27-2005-17:07 Wed  [Dev开发] [pic]
|PC_DOSSaveReturn();                                    /* Save |
|environment to return to DOS        */ |
|PC_VectSet(VECT_DOS_CHAIN, PC_TickISR);                /* Store |
|MS-DOS's tick to chain             */ |
|void PC_VectSet (INT8U vect, void (*isr)(void)) |
|{ |
|#if OS_CRITICAL_METHOD == 3                      /* Allocate |
|storage for CPU status register           */ |
|    OS_CPU_SR  cpu_sr; |
|#endif    |
|    INT16U    *pvect; |
|