.h in assemblym works beautifully as far as #define, sfr and sbit being useful in assembly. Now I have a case of conditional compile that I need reflected in an assembly module. I have tried to make the assembly IF and $IF work based on a #define. Using IF it works if I do a #define 1 or #define 0, that, however wil require replacing all #ifdefs in the C. $IF seems not to react to #define any suggestions? Erik