SDCC is a Freeware, retargettable, optimizing ANSI-C compiler that targets the Intel 8051, Maxim 80DS390 and the Zilog Z80 based MCUs. SDCC also comes with the source level debugger SDCDB, using the current version of Daniel's s51 simulator. WWW: http://sdcc.sourceforge.net/ - Tijl Coosemans tijl@ulyssis.org