__sfr __at (0x80) P0;  /* special function register P0 at location 0x80 */  
  
/* 16 bit special function register combination for timer 0  
   with the high byte at location 0x8C and the low byte at location 0x8A */  
__sfr16 __at (0x8C8A) TMR0;  
  
__sbit __at (0xd7) CY;  /* CY (Carry Flag) */