RBS
{"not", XRC(31,124,0), X_MASK, COM, 0, {RA, RS, RBS}},
{"not.", XRC(31,124,1), X_MASK, COM, 0, {RA, RS, RBS}},
{"mr", XRC(31,444,0), X_MASK, COM, 0, {RA, RS, RBS}},
{"mr.", XRC(31,444,1), X_MASK, COM, 0, {RA, RS, RBS}},
#define RBX RBS + 1