cm_nxt
cm_nxt(p_cm, *blk_adr++);
void cm_nxt P_((p_cm_t p_cm, int ch));
cm_nxt(p_crc, bytes[i]);
cm_nxt(p_crc, bytes[i]);
cm_nxt(p_cm, *blk_adr++);
void cm_nxt P_((p_cm_t p_cm, int ch));
cm_nxt(p_crc, bytes[i]);
cm_nxt(p_crc, bytes[i]);