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Annotation of previous/src/includes/cycInt.h, revision 1.1.1.1

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:   MAX_INTERRUPTS
                     17: } interrupt_id;
                     18: 
                     19: 
                     20: #define        INT_CPU_CYCLE           1
                     21: #define        INT_MFP_CYCLE           2
                     22: 
                     23: #define        INT_CPU_TO_INTERNAL     9600
                     24: #define        INT_MFP_TO_INTERNAL     31333
                     25: 
                     26: /* Convert cpu or mfp cycles to internal cycles */
                     27: #define INT_CONVERT_TO_INTERNAL( cyc , type )  ( type == INT_CPU_CYCLE ? (cyc)*INT_CPU_TO_INTERNAL : (cyc)*INT_MFP_TO_INTERNAL )
                     28: /*
                     29: #define INT_CONVERT_TO_INTERNAL( cyc , type )  ( type == INT_CPU_CYCLE ? cyc*INT_CPU_TO_INTERNAL :\
                     30:        ( ( (cyc*INT_MFP_TO_INTERNAL + INT_CPU_TO_INTERNAL*4 - 1) / (INT_CPU_TO_INTERNAL*4) ) * INT_CPU_TO_INTERNAL*4 ) )
                     31: */
                     32: 
                     33: /* Convert internal cycles to real mfp or cpu cycles */
                     34: /* Rounding is important : for example 9500 internal is 0.98 cpu and should give 1 cpu cycle, not 0 */
                     35: /* so we do (9500+9600-1)/9600 to get the closest higher integer */
                     36: //#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 )
                     37: #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 )
                     38: 
                     39: 
                     40: 
                     41: extern void (*PendingInterruptFunction)(void);
                     42: extern int PendingInterruptCount;
                     43: 
                     44: extern void CycInt_Reset(void);
                     45: extern void CycInt_MemorySnapShot_Capture(bool bSave);
                     46: extern void CycInt_AcknowledgeInterrupt(void);
                     47: extern void CycInt_AddAbsoluteInterrupt(int CycleTime, int CycleType, interrupt_id Handler);
                     48: extern void CycInt_AddRelativeInterrupt(int CycleTime, int CycleType, interrupt_id Handler);
                     49: extern void CycInt_AddRelativeInterruptNoOffset(int CycleTime, int CycleType, interrupt_id Handler);
                     50: extern void CycInt_AddRelativeInterruptWithOffset(int CycleTime, int CycleType, interrupt_id Handler, int CycleOffset);
                     51: extern void CycInt_RemovePendingInterrupt(interrupt_id Handler);
                     52: extern void CycInt_ResumeStoppedInterrupt(interrupt_id Handler);
                     53: extern bool CycInt_InterruptActive(interrupt_id Handler);
                     54: extern int CycInt_FindCyclesPassed(interrupt_id Handler, int CycleType);
                     55: 
                     56: #endif /* ifndef HATARI_CYCINT_H */

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