Hello, I notice that MIPS port uses bit masks for specific CPUs, from #define INSN_DSP 0x00001000 to #define INSN_LOONGSON_2F 0x80000000 The problem is what I should do if I attempt to add a new INSN_* for a specific CPU. Seems there're no available value to use. Thanks for any suggestion Eric Fisher Dec 25 2008