/* dMvdFEM.idl                                       */
/* Organization of data output from the MVD DCM/IMs  */
/* I have borrowed from the organization and naming  */
/* conventions used in the Dch software */

/* For some MVD-related details, see Phenix Note 342 */
/* by Nance Ericson */
/* J.P. Sullivan    30-Jun-98 */
/* J.P. Sullivan revised 24-Jul-98 */

struct dMvdFEM {
  short  CAV1;      /* all bits on                            */
  short  det;       /* following Phenix naming covention,     */
                    /* contains "2" for MVD in upper 8 bits   */
  short  Ecounter;  /* LVL1 accepted event number             */
  short  adr;       /* module address, the lower 2 bits are   */
                    /* the "PLEX" bits and the rest are used  */
                    /* to identify the MCM number             */
  short  Flag;      /* bit 0 = zero suppression               */
                    /* bit 1 = 0 = correlator on (normal)     */
                    /*       = 1 = correlation off (a.k.a. raw*/
                    /*             mode = for calibrations)   */
  short  Bcounter;  /* FEM beam clock counter (8 bits)        */
  short  amucells;  /* AMU cells (low/high bytes)             */
  short  adc[256];  /* ADC data (256 10 bit words)            */
  short  user[8];   /* user words, used to contain various    */
                    /* error codes                            */
                    /* positions of the words containing data */
                    /* parity errors are stored in the first  */
                    /* 7 words, the 8th word contains framing */
                    /* error identifiers                      */
                    /* underflow (not enough words) - bit 11  */
                    /* overflow (too many words )   - bit 12  */
                    /* two start bits without a stop- bit 13  */
  short  parity;    /* checksum -- a.k.a. vertical checksum   */
                    /* -- a.k.a. longitudinal parity word     */
  short  CAV2;      /* end of transmission (00000000)         */
};