search for: zpu_arch

...would probably be most effective in highly space constrained applications(kBytes of code/data), such that it would fit entirely onto an FPGA/CPLD. It has very high code density (~80% of ARM Thumb) Overview of architecture(documentation is definitely the weak side of the ZPU): http://www.zylin.com/zpu_arch.html The ZPU is now hosted at: http://www.opencores.org/projects.cgi/web/zpu/overview -- Øyvind Harboe http://www.zylin.com/zy1000.html ARM7 ARM9 XScale Cortex JTAG debugger and flash programmer