;----------------------------------------------------------------------
;              D E V I C E   C O N T R O L   B L O C K
;----------------------------------------------------------------------
Struc   DCB
  DDEVIC                DB      1  dup (DDEVIC_D1)
  DUNIT                 DB      1  dup (DUNIT_ONE)
  DCOMND                DB      1  dup (DCOMND_READ)
  DSTATS                DB      1  dup (DSTATS_RECEIVE)
  DBUFLO                DB      1  dup (?)
  DBUFHI                DB      1  dup (?)
  DTIMLO                DB      1  dup (DTIMLO_STANDARD)
  DUNUSE                DB      1  dup (NULL)
  DBYTLO                DB      1  dup (?)
  DBYTHI                DB      1  dup (?)
  DAUX1                 DB      1  dup (DAUX1_GET)
  DAUX2                 DB      1  dup (NULL)    
ends

;----------------------------------------------------------------------
;       I N P U T / O U T P U T   C O N T R O L   B L O C K
;----------------------------------------------------------------------
Struc   IOCB
  NUMBER                DB      1  dup (IOCB0)
  ICHID                 DB      1  dup (?)
  ICDNO                 DB      1  dup (?)
  ICCOM                 DB      1  dup (ICCOM_OPEN_CHANNEL)
  ICSTA                 DB      1  dup (?)
  ICBAL                 DB      1  dup (?)
  ICBAH                 DB      1  dup (?)
  ICPTL                 DB      1  dup (?)
  ICPTH                 DB      1  dup (?)
  ICBLL                 DB      1  dup (?)
  ICBLH                 DB      1  dup (?)
  ICAX1                 DB      1  dup (ICAX1_D_READ)
  ICAX2                 DB      1  dup (?)
  ICAX3                 DB      1  dup (?)
  ICAX4                 DB      1  dup (?)
  ICAX5                 DB      1  dup (?)
  ICAX6                 DB      1  dup (?)
ends

;----------------------------------------------------------------------
;      D I S K   D R I V E   C O M M A N D   P A R A M E T E R S
;----------------------------------------------------------------------
Struc   AT_Command_Parameters
  Device                DB            1  dup (DDEVIC_D1)
  Command               DB            1  dup (COMMAND_MOUNT_DISK)
  Status                DB            1  dup (?)
  File                  DB  PATH_LENGTH  dup (SPACE)
  File_Terminator       DB            1  dup (NULL)
ends

;----------------------------------------------------------------------
;      D I S K   D R I V E   V T O C   E N T R Y   S T R U C T U R E
;----------------------------------------------------------------------
Struc   AT_VTOC_Entry
  Status                DB            1  dup (NULL)
  Sector_Size_Low       DB            1  dup (0)
  Sector_Size_High      DB            1  dup (0)
  Sector_Start_Low      DB            1  dup (0)
  Sector_Start_High     DB            1  dup (0)
  File                  DB            8  dup (SPACE)
  Extension             DB            3  dup (SPACE)
ends