$ABADD

 This location should be filled with the address in DM of the
 start  of  the address buffer BADD (see ADDRESS_BUFFER) from
 which the master is to read the addresses of the data stored
 in BDAT.



 $LBADD

 This location should be filled with length in (32-bit words)
 of the address buffer BADD (which is of variable length, see
 ADDRESS_BUFFER) .



 $ABDAT

 This location should be filled with the address in DM of the
 start  of  the data buffer BDAT (see DATA_BUFFER) from which
 the master can read out the data.



 $LBDAT

 This location should be filled with length in (32-bit words)
 of the data buffer BDAT ( see DATA_BUFFER), i.e.  the length
 of the data buffer that contains data.



 $SLAVE_REGS

 This location should be filled with the address in DM of the
 start of a YBOS bank that contains the initial set-up values
 of the slave registers in the crate, or any information of a
 similar  nature.   The  use  and  contents  of  this bank is
 SSP_dependent.

 The bank may read by the master at the beginning of run  and
 written onto magnetic tape, thereby providing some record of
 the setup parameters of the slave modules for that run.

 If no such bank is in use, the location $LSLAVE_REGS  should
 be set to zero.


 $LSLAVE_REGS

 This location should be filled with the  length  (in  32-bit
 words)  of  the  (SSP_dependent)  YBOS bank whose address is
 loaded into $SLAVE_REGS.  If no such bank  is  in  use,  the
 location $LSLAVE_REGS should be set to zero.



 $MORE_INFO

 This location contains the address of a storage block in  DM
 (known  as  MORE_INFORMATION)  that contains status or error
 information.  In the event of a return  code  of  FAIL  (see
 $RET_CODE), MORE_INFORMATION should contain more information
 on the reason for failure, so  that  the  condition  may  be
 corrected.



 $LMORE_INFO

 Since the block MORE_INFORMATION  (see  $MORE_INFO)  is,  in
 general, of variable length, the length (in 32-bit words) of
 the contents of MORE_INFORMATION is stored in $LMORE_INFO.

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