#ifdef KEIL               // KEIL compiler

#  define Reentrant(x)    x reentrant
#  define Sfr(x,y)        sfr x = y
#  define Sfr16(x,y)      sfr16 x = y
#  define Sbit(x,y,z)     sbit x = y ^ z
#  define Interrupt(x,y)  x interrupt y
#  define At(x)           _at_ x

#  ifdef __C51__          // C51 Compiler
#     define far  xdata   // far is for C251 only
#  endif
#endif                    // End of KEIL

#ifdef RAISONANCE         // RAISONANCE compiler

#  define Reentrant(x)    x reentrant
#  define Sfr(x,y)        sfr x = y
#  define Sbit(x,y,z)     sbit x = y ^ z
#  define Interrupt(x,y)  x interrupt y
#  define At(x)           _at_ x

#  ifdef __C51__          // C51 Compiler
#     define far  xdata   // far is for 251 only
#  endif
#endif                    // End of RAISONANCE