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Annotation of hatari/src/includes/cycInt.h, revision 1.1

1.1     ! root        1: /*
        !             2:   Hatari - cycInt.h
        !             3: 
        !             4:   This file is distributed under the GNU Public License, version 2 or at
        !             5:   your option any later version. Read the file gpl.txt for details.
        !             6: */
        !             7: 
        !             8: #ifndef HATARI_CYCINT_H
        !             9: #define HATARI_CYCINT_H
        !            10: 
        !            11: /* Interrupt handlers in system */
        !            12: typedef enum
        !            13: {
        !            14:   INTERRUPT_NULL,
        !            15:   INTERRUPT_VIDEO_VBL,
        !            16:   INTERRUPT_VIDEO_HBL,
        !            17:   INTERRUPT_VIDEO_ENDLINE,
        !            18:   INTERRUPT_MFP_TIMERA,
        !            19:   INTERRUPT_MFP_TIMERB,
        !            20:   INTERRUPT_MFP_TIMERC,
        !            21:   INTERRUPT_MFP_TIMERD,
        !            22:   INTERRUPT_IKBD_RESETTIMER,
        !            23:   INTERRUPT_IKBD_ACIA,
        !            24:   INTERRUPT_IKBD_MFP,
        !            25:   INTERRUPT_IKBD_AUTOSEND,
        !            26:   INTERRUPT_DMASOUND,
        !            27:   INTERRUPT_DMASOUND_MICROWIRE,
        !            28:   INTERRUPT_CROSSBAR_25MHZ,
        !            29:   INTERRUPT_CROSSBAR_32MHZ,
        !            30:   INTERRUPT_FDC,
        !            31:   INTERRUPT_BLITTER,
        !            32:   INTERRUPT_MIDI,
        !            33: 
        !            34:   MAX_INTERRUPTS
        !            35: } interrupt_id;
        !            36: 
        !            37: 
        !            38: #define        INT_CPU_CYCLE           1
        !            39: #define        INT_MFP_CYCLE           2
        !            40: 
        !            41: #define        INT_CPU_TO_INTERNAL     9600
        !            42: #define        INT_MFP_TO_INTERNAL     31333
        !            43: 
        !            44: /* Convert cpu or mfp cycles to internal cycles */
        !            45: #define INT_CONVERT_TO_INTERNAL( cyc , type )  ( type == INT_CPU_CYCLE ? (cyc)*INT_CPU_TO_INTERNAL : (cyc)*INT_MFP_TO_INTERNAL )
        !            46: /*
        !            47: #define INT_CONVERT_TO_INTERNAL( cyc , type )  ( type == INT_CPU_CYCLE ? cyc*INT_CPU_TO_INTERNAL :\
        !            48:        ( ( (cyc*INT_MFP_TO_INTERNAL + INT_CPU_TO_INTERNAL*4 - 1) / (INT_CPU_TO_INTERNAL*4) ) * INT_CPU_TO_INTERNAL*4 ) )
        !            49: */
        !            50: 
        !            51: /* Convert internal cycles to real mfp or cpu cycles */
        !            52: /* Rounding is important : for example 9500 internal is 0.98 cpu and should give 1 cpu cycle, not 0 */
        !            53: /* so we do (9500+9600-1)/9600 to get the closest higher integer */
        !            54: //#define INT_CONVERT_FROM_INTERNAL( cyc , type )      ( type == INT_CPU_CYCLE ? (cyc+INT_CPU_TO_INTERNAL-1)/INT_CPU_TO_INTERNAL : (cyc+INT_MFP_TO_INTERNAL-1)/INT_MFP_TO_INTERNAL )
        !            55: #define INT_CONVERT_FROM_INTERNAL( cyc , type )        ( type == INT_CPU_CYCLE ? (cyc)/INT_CPU_TO_INTERNAL : ((cyc)+INT_MFP_TO_INTERNAL-1)/INT_MFP_TO_INTERNAL )
        !            56: 
        !            57: 
        !            58: 
        !            59: extern void (*PendingInterruptFunction)(void);
        !            60: extern int PendingInterruptCount;
        !            61: 
        !            62: extern void CycInt_Reset(void);
        !            63: extern void CycInt_MemorySnapShot_Capture(bool bSave);
        !            64: extern void CycInt_AcknowledgeInterrupt(void);
        !            65: extern void CycInt_AddAbsoluteInterrupt(int CycleTime, int CycleType, interrupt_id Handler);
        !            66: extern void CycInt_AddRelativeInterrupt(int CycleTime, int CycleType, interrupt_id Handler);
        !            67: extern void CycInt_AddRelativeInterruptNoOffset(int CycleTime, int CycleType, interrupt_id Handler);
        !            68: extern void CycInt_AddRelativeInterruptWithOffset(int CycleTime, int CycleType, interrupt_id Handler, int CycleOffset);
        !            69: extern void CycInt_RemovePendingInterrupt(interrupt_id Handler);
        !            70: extern void CycInt_ResumeStoppedInterrupt(interrupt_id Handler);
        !            71: extern bool CycInt_InterruptActive(interrupt_id Handler);
        !            72: extern int CycInt_FindCyclesPassed(interrupt_id Handler, int CycleType);
        !            73: 
        !            74: #endif /* ifndef HATARI_CYCINT_H */

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