MYPROCSTACKSIZE   EQU   $800
MYPROCPRI   EQU   5


   DEVINIT
   DEVCMD   CMD_MOTOR   ; control the disk's motor (NO-OP)
   DEVCMD   CMD_SEEK   ; explicit seek (NO-OP)
   DEVCMD   CMD_FORMAT   ; format disk - equated to WRITE for RAMDISK
   DEVCMD   CMD_REMOVE   ; notify when disk changes (NO-OP)
   DEVCMD   CMD_CHANGENUM   ; number of disk changes (always 0)
   DEVCMD   CMD_CHANGESTATE   ; is there a disk in the drive? (always TRUE)
   DEVCMD   CMD_PROTSTATUS   ; is the disk write protected? (always FALSE)
   DEVCMD   CMD_RAWREAD   ; Not supported
   DEVCMD   CMD_RAWWRITE   ; Not supported
   DEVCMD   CMD_GETDRIVETYPE ; Get drive type
   DEVCMD   CMD_GETNUMTRACKS ; Get number of tracks
   DEVCMD   CMD_ADDCHANGEINT ; Add disk change interrupt (NO-OP)
   DEVCMD   CMD_REMCHANGEINT ; Remove disk change interrupt ( NO-OP)
;  DEVCMD   MYDEV_END   ; place marker -- first illegal command #
MYDEV_END 	EQU 29


;-----------------------------------------------------------------------
;
; device data structures
;
;-----------------------------------------------------------------------

; maximum number of units in this device
MD_NUMUNITS   EQU   $10

    STRUCTURE MyDev,LIB_SIZE
   ULONG   md_SysLib
   ULONG   md_DosLib
   ULONG   md_SegList
   ULONG   md_Base      ; Base address of this device's expansion board
   UBYTE   md_Flags
   UBYTE   md_pad
   STRUCT   md_Units,MD_NUMUNITS*4
   LABEL   MyDev_Sizeof

    STRUCTURE MyDevMsg,MN_SIZE
   APTR   mdm_Device
   APTR   mdm_Unit
   LABEL   MyDevMsg_Sizeof

    STRUCTURE MyDevUnit,UNIT_SIZE
   UBYTE   mdu_UnitNum
   UBYTE   mdu_SigBit      ; Signal bit allocated for interrupts
   APTR   mdu_Device
   STRUCT   mdu_stack,MYPROCSTACKSIZE
    STRUCT   mdu_is,IS_SIZE      ; Interrupt structure
   STRUCT   mdu_tcb,TC_SIZE      ; TCB for disk task
   STRUCT   mdu_Msg,MyDevMsg_Sizeof
   ULONG   mdu_SigMask      ; Signal these bits on interrupt
   LABEL   MyDevUnit_Sizeof

   ;------ state bit for unit stopped
   BITDEF   MDU,STOPPED,2

MYDEVNAME   MACRO
      DC.B   'spartan.device',0
      ENDM

DOSNAME      MACRO
      DC.B   'dos.library',0
      ENDM