CBB_SOCKET_MASK_CD
cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD | CBB_SOCKET_MASK_CSTS);
mask &= ~CBB_SOCKET_MASK_CD;
cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
#define DELTA (CBB_SOCKET_MASK_CD)
cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);