WF AUTOMA_AO wrote: > Does someone know how to access some external address memory, using > the Language C (Hitech or ByteCraft)! My project uses a PIC17C42 > with external program eprom! mIGUEL: Hi-Tech's C-compiler does not yet support the 17Cxx. Bytecraft's does, but the method is currently a little awkward: You need to perform all program-memory accesses through "long far" pointers. Details are in the Bytecraft appnote "EXTERNAL.C", available from the Bytecraft BBS (519 888-7626). -Andy === Andrew Warren - fastfwd@ix.netcom.com === Fast Forward Engineering - Vista, California === http://www.geocities.com/SiliconValley/2499