ZRC              2615 arch/powerpc/xmon/ppc-opc.c #define ZRC(op, xop, rc) (Z ((op), (xop)) | ((rc) & 1))
ZRC                86 drivers/net/wan/hdlc_ppp.c enum {INV = 0x10, IRC = 0x20, ZRC = 0x40, SCR = 0x80, SCA = 0x100,