IFND   RESOURCES_DISK_I
RESOURCES_DISK_I   SET   1

*****************************************************************
*                                                               *
* Copyright 1985, Commodore Amiga Inc.  All rights reserved.    *
* No part of this program may be reproduced, transmitted,       *
* transcribed, stored in retrieval system, or translated into   *
* any language or computer language, in any form or by any      *
* means, electronic, mechanical, magnetic, optical, chemical,   *
* manual or otherwise, without the prior written permission of  *
* Commodore Amiga Incorporated, 3350 Scott Blvd, Bld #7,        *
* Santa Clara, CA 95051                                         *
*                                                               *
*****************************************************************


*****************************************************************
*
* discresource.i -- external declarations for disc resources
*
* SOURCE CONTROL
* ------ -------
* $Header: disk.i,v 27.3 85/07/12 23:17:43 neil Exp $
*
* $Locker:  $
*
*****************************************************************

   IFND   EXEC_TYPES_I
   INCLUDE   "exec/types.i"
   ENDC

   IFND   EXEC_LISTS_I
   INCLUDE   "exec/lists.i"
   ENDC

   IFND   EXEC_PORTS_I
   INCLUDE   "exec/ports.i"
   ENDC

   IFND   EXEC_INTERRUPTS_I
   INCLUDE   "exec/interrupts.i"
   ENDC

   IFND   EXEC_LIBRARIES_I
   INCLUDE   "exec/libraries.i"
   ENDC


*********************************************************************
*
* Resource structures
*
*********************************************************************

    STRUCTURE DISCRESOURCEUNIT,MN_SIZE
   STRUCT   DRU_DISCBLOCK,IS_SIZE
   STRUCT   DRU_DISCSYNC,IS_SIZE
   STRUCT   DRU_INDEX,IS_SIZE
   LABEL   DRU_SIZE



    STRUCTURE DISCRESOURCE,LIB_SIZE
   APTR   DR_CURRENT   ; pointer to current unit structure
   UBYTE   DR_FLAGS
   UBYTE   DR_pad
   APTR   DR_SYSLIB
   APTR   DR_CIARESOURCE
   STRUCT   DR_UNITID,4*4
   STRUCT   DR_WAITING,LH_SIZE
   STRUCT   DR_DISCBLOCK,IS_SIZE
   STRUCT   DR_DISCSYNC,IS_SIZE
   STRUCT   DR_INDEX,IS_SIZE
   LABEL   DR_SIZE

   BITDEF   DR,ALLOC0,0   ; unit zero is allocated
   BITDEF   DR,ALLOC1,1   ; unit one is allocated
   BITDEF   DR,ALLOC2,2   ; unit two is allocated
   BITDEF   DR,ALLOC3,3   ; unit three is allocated
   BITDEF   DR,ACTIVE,7   ; is the disc currently busy?


*********************************************************************
*
* Hardware Magic
*
*********************************************************************


DSKDMAOFF   EQU   $4000   ; idle command for dsklen register


*********************************************************************
*
* Resource specific commands
*
*********************************************************************

*-- DR_NAME is a generic macro to get the name of the resource.  This
*-- way if the name is ever changed you will pick up the change
*-- automatically.
*--
*-- Normal usage would be:
*--
*-- internalName:   DISKNAME
*--

DISKNAME:   MACRO
      DC.B   'disk.resource',0
      DS.W   0
      ENDM

   LIBINIT LIB_BASE
   LIBDEF   DR_ALLOCUNIT
   LIBDEF   DR_FREEUNIT
   LIBDEF   DR_GETUNIT
   LIBDEF   DR_GIVEUNIT
   LIBDEF   DR_GETUNITID

DR_LASTCOMM   EQU   DR_GIVEUNIT


*********************************************************************
*
* drive types
*
*********************************************************************

DRT_AMIGA   EQU   $00000000
DRT_37422D2S   EQU   $55555555
DRT_EMPTY   EQU   $FFFFFFFF

   ENDC