SDCC is a freeware , optimizing, C compiler that is created by Sandeep Dutta under the GNU General Public License. The package includes an ANSI 8051 C Compiler, 8051 Assembler, LINKER and example projects, some of which has been added by BiPOM Electronics. The linker that comes with SDCC has been modified by BiPOM Electronics to run SDCC seamlessly in our Micro-IDE environment.dcc wiring