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Annotation of hatari/src/includes/cycInt.h, revision 1.1.1.2

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_MICROWIRE,
                     27:   INTERRUPT_CROSSBAR_25MHZ,
                     28:   INTERRUPT_CROSSBAR_32MHZ,
                     29:   INTERRUPT_FDC,
                     30:   INTERRUPT_BLITTER,
                     31:   INTERRUPT_MIDI,
                     32: 
                     33:   MAX_INTERRUPTS
                     34: } interrupt_id;
                     35: 
                     36: 
                     37: #define        INT_CPU_CYCLE           1
                     38: #define        INT_MFP_CYCLE           2
                     39: 
                     40: #define        INT_CPU_TO_INTERNAL     9600
                     41: #define        INT_MFP_TO_INTERNAL     31333
                     42: 
                     43: /* Convert cpu or mfp cycles to internal cycles */
                     44: #define INT_CONVERT_TO_INTERNAL( cyc , type )  ( type == INT_CPU_CYCLE ? (cyc)*INT_CPU_TO_INTERNAL : (cyc)*INT_MFP_TO_INTERNAL )
                     45: /*
                     46: #define INT_CONVERT_TO_INTERNAL( cyc , type )  ( type == INT_CPU_CYCLE ? cyc*INT_CPU_TO_INTERNAL :\
                     47:        ( ( (cyc*INT_MFP_TO_INTERNAL + INT_CPU_TO_INTERNAL*4 - 1) / (INT_CPU_TO_INTERNAL*4) ) * INT_CPU_TO_INTERNAL*4 ) )
                     48: */
                     49: 
                     50: /* Convert internal cycles to real mfp or cpu cycles */
                     51: /* Rounding is important : for example 9500 internal is 0.98 cpu and should give 1 cpu cycle, not 0 */
                     52: /* so we do (9500+9600-1)/9600 to get the closest higher integer */
                     53: //#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 )
                     54: #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 )
                     55: 
                     56: 
                     57: 
                     58: extern void (*PendingInterruptFunction)(void);
                     59: extern int PendingInterruptCount;
                     60: 
                     61: extern void CycInt_Reset(void);
                     62: extern void CycInt_MemorySnapShot_Capture(bool bSave);
                     63: extern void CycInt_AcknowledgeInterrupt(void);
                     64: extern void CycInt_AddAbsoluteInterrupt(int CycleTime, int CycleType, interrupt_id Handler);
                     65: extern void CycInt_AddRelativeInterrupt(int CycleTime, int CycleType, interrupt_id Handler);
                     66: extern void CycInt_AddRelativeInterruptNoOffset(int CycleTime, int CycleType, interrupt_id Handler);
                     67: extern void CycInt_AddRelativeInterruptWithOffset(int CycleTime, int CycleType, interrupt_id Handler, int CycleOffset);
                     68: extern void CycInt_RemovePendingInterrupt(interrupt_id Handler);
                     69: extern void CycInt_ResumeStoppedInterrupt(interrupt_id Handler);
                     70: extern bool CycInt_InterruptActive(interrupt_id Handler);
                     71: extern int CycInt_FindCyclesPassed(interrupt_id Handler, int CycleType);
                     72: 
                     73: #endif /* ifndef HATARI_CYCINT_H */

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