SDCC is a retargettable, optimizing ANSI - C compiler that targets the Intel 8051, Maxim 80DS390, Zilog Z80 and the Motorola 68HC08 based MCUs. Work is in progress on supporting the Microchip PIC16 and PIC18 series. SDCC is Free Open Source Software, distributed under GNU General Public License (GPL).
z88dk is a z80 C cross compiler supplied with an assembler/linker and a set of libraries implementing the C standard library for a number of different z80 based machines. The name z88dk originates from the time when the project was founded and targetted only the Cambridge z88 portable.
... [More] compiler featured in z88dk is a much enhanced Small C compiler; the compiler accepts many features of ANSI C and is only deficient in a few areas where implementation on a z80 processor might prove inefficient. The compiler performs simple optimisations, but the bulk of the optimisation is achieved by a set of peep-hole rules, which will typically reduce the size of a large project by up to a third. [Less]
GCC6809 is a port of the GNU Compiler Collection (GCC) to the Motorola 6809 processor. It is distributed separately from the GCC mainline. Several versions are supported, and updates are made frequently to try to keep up-to-date with the latest GCC development. The most stable release is now
... [More] based on GCC 4.3.
GCC6809 is distributed as a patch against the full GCC sources, which can be downloaded from any GNU mirror. The patch adds a new target type, "m6809-unknown-none", and allows building of the C and C++ compilers. The patch also includes a version of the ASXXXX cross assembler, which provides the assembler, linker, and a library tool.
The compiler is mature and was initially developed to support the FreeWPC pinball operating system. [Less]