#define DEC_BARREL {B8(00010001), B8(00110111)}
#define DEC_MUL {B8(00010000), B8(00110111)}
#define DEC_DIV {B8(00010010), B8(00110111)}
+#define DEC_FPU {B8(00111111), B8(00010110)}
#define DEC_LD {B8(00110000), B8(00110100)}
#define DEC_ST {B8(00110100), B8(00110100)}