请教uc/os的问题

只看该作者 · 2011-11-19 10:26

大家好：
      请教一个ucos中堆栈初始化子程序的问题，程序如下：
OS_STK  *OSTaskStkInit (void (*task)(void *pd), void *pdata, OS_STK *ptos, INT16U opt)
{
INT16U  *stk;
#ifdef BANKED
INT16U  RegPage;             /* uses to save the ppage  */
INT16U *OffsetAddress;
#endif
stk = (INT16U *)ptos;       //load stack pointer
*--stk = opt;             //opt the is one byte blank
#ifdef BANKED
OffsetAddress = (INT16U *)&task;  /* 16 bit address*/
RegPage = (INT8U)task;          /* PPAGE */
*--stk = (INT16U)*OffsetAddress;    //pc for use of opt in task
*--stk = (INT16U)*OffsetAddress;    //pc
#endif
#ifdef SMALL
*--stk = (INT16U)(task);    //pc for use of opt in task
*--stk = (INT16U)(task);    //pc
#endif
*--stk = (INT16U)(0x1122); //Y Register
*--stk = (INT16U)(0x3344); //X Register
*--stk = (INT16U)pdata;    //D Register:A,B
*--stk = (INT16U)(0x00);    //CCR,16 bits in S12X
/*((INT8U *)stk)--;          //CCR,8 bits in S12
*(INT8U *)stk = (INT8U)(0x00); //CCR*/
#ifdef BANKED
((INT8U *)stk)--;             // a byte need for PPAGE
*(INT8U *)stk = RegPage;//PPAGE
#endif
return((OS_STK *)stk);
}
其中那个0X1122和0X3344代表的是什么啊？