#ifndef EXEC_EXECBASE_H
#define EXEC_EXECBASE_H
/*********************************************************************
*
*   Commodore Amiga -- ROM Operating System Executive Include File
*
**********************************************************************
*
*   Source Control:
*
*       $Header: execbase.h,v 33.3 86/05/01 12:50:18 neil Exp $
*
*       $Locker:  $
*
*********************************************************************/

#ifndef EXEC_LISTS_H
#include "exec/lists.h"
#endif !EXEC_LISTS_H

#ifndef EXEC_INTERRUPTS_H
#include "exec/interrupts.h"
#endif !EXEC_INTERRUPTS_H

#ifndef EXEC_LIBRARIES_H
#include "exec/libraries.h"
#endif !EXEC_LIBRARIES_H

#ifndef EXEC_TASKS_H
#include "exec/tasks.h"
#endif !EXEC_TASKS_H


struct ExecBase {
        struct Library  LibNode;

        UWORD   SoftVer;        /* kickstart release number      */
        WORD    LowMemChkSum;
        ULONG   ChkBase;        /* system base pointer complement */
        APTR    ColdCapture;    /* coldstart soft vector         */
        APTR    CoolCapture;
        APTR    WarmCapture;
        APTR    SysStkUpper;    /* system stack base (upper bound) */
        APTR    SysStkLower;    /* top of system stack (lower bound) */
        ULONG   MaxLocMem;
        APTR    DebugEntry;
        APTR    DebugData;
        APTR    AlertData;
        APTR    MaxExtMem;      /* top of extended mem, or null if none */

        UWORD   ChkSum;

/****** Interrupt Related ***************************************/

        struct  IntVector IntVects[16];

/****** System Variables ****************************************/

        struct  Task *ThisTask; /* pointer to current task */
        ULONG   IdleCount;      /* idle counter */
        ULONG   DispCount;      /* dispatch counter */
        UWORD   Quantum;        /* time slice quantum */
        UWORD   Elapsed;        /* current quantum ticks */
        UWORD   SysFlags;       /* misc system flags */
        BYTE    IDNestCnt;      /* interrupt disable nesting count */
        BYTE    TDNestCnt;      /* task disable nesting count */

        UWORD   AttnFlags;      /* special attention flags */
        UWORD   AttnResched;    /* rescheduling attention */
        APTR    ResModules;     /* resident module array pointer */

        APTR    TaskTrapCode;
        APTR    TaskExceptCode;
        APTR    TaskExitCode;
        ULONG   TaskSigAlloc;
        UWORD   TaskTrapAlloc;


/****** System Lists ********************************************/

        struct  List MemList;
        struct  List ResourceList;
        struct  List DeviceList;
        struct  List IntrList;
        struct  List LibList;
        struct  List PortList;
        struct  List TaskReady;
        struct  List TaskWait;

        struct  SoftIntList SoftInts[5];

/****** Other Globals *******************************************/

        LONG    LastAlert[4];



        /* these next two variables are provided to allow
        ** system developers to have a rough idea of the
        ** period of two externally controlled signals --
        ** the time between vertical blank interrupts and the
        ** external line rate (which is counted by CIA A's
        ** "time of day" clock).  In general these values
        ** will be 50 or 60, and may or may not track each
        ** other.  These values replace the obsolete AFB_PAL
        ** and AFB_50HZ flags.
        */
        UBYTE   VBlankFrequency;
        UBYTE   PowerSupplyFrequency;

        struct  List SemaphoreList;

        /* these next two are to be able to kickstart into user ram.
        ** KickMemPtr holds a singly linked list of MemLists which
        ** will be removed from the memory list via AllocAbs.  If
        ** all the AllocAbs's succeeded, then the KickTagPtr will
        ** be added to the rom tag list.
        */
        APTR    KickMemPtr;     /* ptr to queue of mem lists */
        APTR    KickTagPtr;     /* ptr to rom tag queue */
        APTR    KickCheckSum;   /* checksum for mem and tags */

        UBYTE   ExecBaseReserved[10];
        UBYTE   ExecBaseNewReserved[20];
};

#define SYSBASESIZE  sizeof(struct ExecBase)

/******* AttnFlags */
/*  Processors and Co-processors: */
#define AFB_68010       0       /* also set for 68020 */
#define AFB_68020       1
#define AFB_68881       4

#define AFF_68010       (1<<0)
#define AFF_68020       (1<<1)
#define AFF_68881       (1<<4)

/* These two bits used to be AFB_PAL and AFB_50HZ.  After some soul
** searching we realized that they were misnomers, and the information
** is now kept in VBlankFrequency and PowerSupplyFrequency above.
** To find out what sort of video conversion is done, look in the
** graphics subsytem.
*/
#define AFB_RESERVED8   8
#define AFB_RESERVED9   9

#endif