http://www.microchip.com/forums/m625987.aspx 1) Note that MPLAB C18 compiler is Windows only and will be deprecated by the introduction of MPLAB XC8. 2) XC8 will take source written for C18. So what is XC8? Is it a mix of PICC18 and MPLAB C18? Or even a mix of PICC/PICC18/C18? Or is it just based on C18? I tend to believe XC16 and XC32 are just cross-platform version of C30 and C32. --=20 Xiaofan --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .