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Stefan, Rob, Mark, Ng, Thanks for the help, guys. I was about to give up on getting stdio to work, but thanks to your support, I kept trudging through the code and was able to find the error. The main problem was that I am using a 68008 processor, and gcc was compiling for a 68020(?) by default. Most code ran fine, but when dealing with some signed char variables, the EXTB.L instruction was used, which is not supported on the 68008. This was causing my program to hang in some situations, but not in others. Once I discovered this, the main problem was trying to get newlib and libgloss compiled using only 68000 instructions. I had to change some stuff in the makefiles because for some reason I could not pass the -m68000 option from the top level makefile down to the /libgloss/m68k directory where the outbyte function resides. The files in the /libgloss directory compiled fine with the option passed from the top-level makefile. I had to add the line: CFLAGS_FOR_TARGET = @CFLAGS@ to the file: libgloss/m68k/Makefile.in to get the option passed. I have a couple of questions. What is the correct way to install gcc (libgcc, newlib, libgloss, etc.) for my 68008 system, so that the libraries will be compiled correctly? It seems to be working now, but I want to make sure I have everything right. Also, what does the m68k-coff option compile for by default? It's obviously not the m68000. Thanks again for your help. Jeff