/* ... "ebcomms.h" ...
   Master controller communication control record format  */

struct master_anchor {
  int not_up;                                     /* => 0 when master ready */
  struct comms_record *comms_record;   /* points to processor comms records */
  };

/* Following record (per processor) is kept by crate master privately   ... */

struct master_comms_record {
  int mailbox_address;
  int mailbox_type;   
  int mailbox_value;  
  int reset_address;  
  int reset_type;     
  int reset_value;    
  int processor_type;
  int spare1;
  };

/* Following record (per processor) is shared with all processors ...  */

struct comms_record {
  int vme_base_address;
  int vsb_base_address;
  int slave_status;                     /* modified by slave */
  int load_status;                      /* modified by master */
  int command;           /* previously: int * exec_command_address; */
  int command_response;
  int command_data;
  int command_data2;
  int * local_data_address;
  struct statistics_record *statistics;
  int spare1;
  int spare2;
  int *input_transfer_queue;
  int *input_return_queue;
  int *output_transfer_queue;
  int *output_return_queue;
  };

/* crate processor number ranges allowed */

#define  PROCNUM_START                  1
#define  PROCNUM_END                   19
#define  PROCNUM_MAX                   20     /* array range definitions */

#define  INPUT_PROCNUM_START            4
#define  INPUT_PROCNUM_END              6
#define  OUTPUT_PROCNUM                 7
#define  EVENT_PROCNUM_START            8 
#define  EVENT_PROCNUM_END             15

/* Commands allowed across backplane between master and slaves ... */

#define STATUS_COMMAND                  1
#define INIT_COMMAND                    2
#define GO_COMMAND                      3
#define STOP_COMMAND                    4
#define FLUSH_COMMAND                   5
#define TRANSMIT_SET_COMMAND            6
#define TRANSMIT_GET_COMMAND            7
#define TEST_INPUT_ON_COMMAND           8
#define TEST_INPUT_OFF_COMMAND          9
#define TEST_OUTPUT_ON_COMMAND         10
#define TEST_OUTPUT_OFF_COMMAND        11
#define STATS_ZERO_COMMAND             12
#define HWM_SET_COMMAND                13
#define BLOCK_LENGTH_SET_COMMAND       14
#define SORT_STATE_SET_COMMAND         15       
#define TAPE_STATE_SET_COMMAND         15       
#define OUTPUT_STATE_SET_COMMAND       15
#define SORTFRACTION_SET_COMMAND       16
#define QLENGTH_COMMAND                17
#define BLOCKS_COMMAND                 18
#define PROCESSMODE_SET_COMMAND        19