I found a paper wich may be interesting for some of you. It's a report of a thesis on porting GCC to a new microprocessor: ftp.axis.com/pub/axis/tools/cris/misc/rapport.pdf (or rapport.ps) Btw axis made a custom chip wich is quite interesting even if it lakes a MMU. Frédéric Renet Mipsys 19c Av des Indes 91969 Les Ulis (France) Tel: +33 1 64 86 26 00 Fax: +33 1 64 86 26 09