Hi TeamGCC, I am a beginner in gcc development .I would be grateful if you could help me by suggesting a beginning for gcc development.My aim is not to have a complete development of toolchain or gcc,but to edit the existing gcc compiler in gnu-toolchain developed for specific hardware(like a cross compiler), as this is an urgent requirement.Already added the opcodes and test run the same with few assembler modifications. How can I edit that compiler ? Where to begin with? -- Richu Norman Research Scholar Department of Computer Science Cochin University of Science and Technology, India Ph : (+91)-8848455627