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https://github.com/RaySollium99/picodrive.git
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refactoring z80 if code for sms preparation
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@752 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz
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4010330cc0
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c8d1e9b662
10 changed files with 354 additions and 375 deletions
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@ -218,11 +218,16 @@ extern int z80_scanline_cycles; /* cycles done until z80_scanline */
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#define cycles_68k_to_z80(x) ((x)*957 >> 11)
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#define Z80_MEM_SHIFT 13
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extern unsigned long z80_read_map [0x10000 >> Z80_MEM_SHIFT];
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extern unsigned long z80_write_map[0x10000 >> Z80_MEM_SHIFT];
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typedef unsigned char (z80_read_f)(unsigned short a);
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typedef void (z80_write_f)(unsigned int a, unsigned char data);
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// ---------------------------------------------------------
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// main oscillator clock which controls timing
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#define OSC_NTSC 53693100
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// seems to be accurate, see scans from http://www.hot.ee/tmeeco/
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#define OSC_PAL 53203424
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struct PicoVideo
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@ -369,12 +374,12 @@ typedef struct
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#define Pico_mcd ((mcd_state *)Pico.rom)
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// Area.c
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// area.c
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PICO_INTERNAL void PicoAreaPackCpu(unsigned char *cpu, int is_sub);
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PICO_INTERNAL void PicoAreaUnpackCpu(unsigned char *cpu, int is_sub);
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extern void (*PicoLoadStateHook)(void);
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// cd/Area.c
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// cd/area.c
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PICO_INTERNAL int PicoCdSaveState(void *file);
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PICO_INTERNAL int PicoCdLoadState(void *file);
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@ -397,23 +402,23 @@ extern areaeof *areaEof;
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extern areaseek *areaSeek;
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extern areaclose *areaClose;
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// Cart.c
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// cart.c
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extern void (*PicoCartUnloadHook)(void);
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// Debug.c
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// debug.c
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int CM_compareRun(int cyc, int is_sub);
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// Draw.c
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// draw.c
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PICO_INTERNAL void PicoFrameStart(void);
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void PicoDrawSync(int to, int blank_last_line);
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extern int DrawScanline;
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#define MAX_LINE_SPRITES 29
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extern unsigned char HighLnSpr[240][3 + MAX_LINE_SPRITES];
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// Draw2.c
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// draw2.c
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PICO_INTERNAL void PicoFrameFull();
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// Memory.c
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// memory.c
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PICO_INTERNAL void PicoInitPc(unsigned int pc);
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PICO_INTERNAL unsigned int PicoCheckPc(unsigned int pc);
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PICO_INTERNAL_ASM unsigned int PicoRead32(unsigned int a);
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@ -421,29 +426,21 @@ PICO_INTERNAL void PicoMemSetup(void);
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PICO_INTERNAL_ASM void PicoMemReset(void);
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PICO_INTERNAL void PicoMemResetHooks(void);
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PICO_INTERNAL int PadRead(int i);
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PICO_INTERNAL unsigned char z80_read(unsigned short a);
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#ifndef _USE_CZ80
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PICO_INTERNAL_ASM void z80_write(unsigned char data, unsigned short a);
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PICO_INTERNAL void z80_write16(unsigned short data, unsigned short a);
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PICO_INTERNAL unsigned short z80_read16(unsigned short a);
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#else
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PICO_INTERNAL_ASM void z80_write(unsigned int a, unsigned char data);
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#endif
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PICO_INTERNAL int ym2612_write_local(unsigned int a, unsigned int d, int is_from_z80);
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extern unsigned int (*PicoRead16Hook)(unsigned int a, int realsize);
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extern void (*PicoWrite8Hook) (unsigned int a,unsigned int d,int realsize);
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extern void (*PicoWrite16Hook)(unsigned int a,unsigned int d,int realsize);
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// cd/Memory.c
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// cd/memory.c
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PICO_INTERNAL void PicoMemSetupCD(void);
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PICO_INTERNAL_ASM void PicoMemResetCD(int r3);
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PICO_INTERNAL_ASM void PicoMemResetCDdecode(int r3);
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// Pico/Memory.c
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// pico/memory.c
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PICO_INTERNAL void PicoMemSetupPico(void);
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PICO_INTERNAL unsigned int ym2612_read_local_68k(void);
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// Pico.c
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// pico.c
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extern struct Pico Pico;
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extern struct PicoSRAM SRam;
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extern int PicoPadInt[2];
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@ -454,23 +451,23 @@ PICO_INTERNAL int CheckDMA(void);
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PICO_INTERNAL void PicoDetectRegion(void);
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PICO_INTERNAL void PicoSyncZ80(int m68k_cycles_done);
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// cd/Pico.c
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// cd/pico.c
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PICO_INTERNAL void PicoInitMCD(void);
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PICO_INTERNAL void PicoExitMCD(void);
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PICO_INTERNAL void PicoPowerMCD(void);
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PICO_INTERNAL int PicoResetMCD(void);
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PICO_INTERNAL void PicoFrameMCD(void);
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// Pico/Pico.c
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// pico/pico.c
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PICO_INTERNAL void PicoInitPico(void);
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PICO_INTERNAL void PicoReratePico(void);
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// Pico/xpcm.c
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// pico/xpcm.c
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PICO_INTERNAL void PicoPicoPCMUpdate(short *buffer, int length, int stereo);
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PICO_INTERNAL void PicoPicoPCMReset(void);
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PICO_INTERNAL void PicoPicoPCMRerate(int xpcm_rate);
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// Sek.c
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// sek.c
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PICO_INTERNAL void SekInit(void);
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PICO_INTERNAL int SekReset(void);
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PICO_INTERNAL void SekState(int *data);
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@ -479,7 +476,7 @@ void SekStepM68k(void);
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void SekInitIdleDet(void);
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void SekFinishIdleDet(void);
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// cd/Sek.c
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// cd/sek.c
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PICO_INTERNAL void SekInitS68k(void);
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PICO_INTERNAL int SekResetS68k(void);
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PICO_INTERNAL int SekInterruptS68k(int irq);
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@ -515,13 +512,13 @@ void ym2612_unpack_state(void);
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timer_b_step = TIMER_B_TICK_ZCYCLES * 256;
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// VideoPort.c
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// videoport.c
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PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d);
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PICO_INTERNAL_ASM unsigned int PicoVideoRead(unsigned int a);
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PICO_INTERNAL_ASM unsigned int PicoVideoRead8(unsigned int a);
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extern int (*PicoDmaHook)(unsigned int source, int len, unsigned short **srcp, unsigned short **limitp);
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// Misc.c
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// misc.c
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PICO_INTERNAL void SRAMWriteEEPROM(unsigned int d);
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PICO_INTERNAL void SRAMUpdPending(unsigned int a, unsigned int d);
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PICO_INTERNAL_ASM unsigned int SRAMReadEEPROM(void);
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@ -530,7 +527,16 @@ PICO_INTERNAL_ASM void memcpy16bswap(unsigned short *dest, void *src, int count)
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PICO_INTERNAL_ASM void memcpy32(int *dest, int *src, int count); // 32bit word count
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PICO_INTERNAL_ASM void memset32(int *dest, int c, int count);
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// cd/Misc.c
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// z80 functionality wrappers
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PICO_INTERNAL void z80_init(void);
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PICO_INTERNAL void z80_pack(unsigned char *data);
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PICO_INTERNAL void z80_unpack(unsigned char *data);
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PICO_INTERNAL void z80_reset(void);
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PICO_INTERNAL void z80_exit(void);
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void z80_map_set(unsigned long *map, int start_addr,
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int end_addr, void *func_or_mh, int is_func);
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// cd/misc.c
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PICO_INTERNAL_ASM void wram_2M_to_1M(unsigned char *m);
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PICO_INTERNAL_ASM void wram_1M_to_2M(unsigned char *m);
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@ -542,12 +548,6 @@ PICO_INTERNAL void PsndReset(void);
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PICO_INTERNAL void PsndDoDAC(int line_to);
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PICO_INTERNAL void PsndClear(void);
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PICO_INTERNAL void PsndGetSamples(int y);
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// z80 functionality wrappers
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PICO_INTERNAL void z80_init(void);
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PICO_INTERNAL void z80_pack(unsigned char *data);
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PICO_INTERNAL void z80_unpack(unsigned char *data);
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PICO_INTERNAL void z80_reset(void);
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PICO_INTERNAL void z80_exit(void);
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extern int PsndDacLine;
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// emulation event logging
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@ -595,6 +595,12 @@ extern void lprintf(const char *fmt, ...);
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#define cdprintf(x...)
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#endif
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#if defined(__GNUC__) && !defined(ARM)
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#define MEMH_FUNC __attribute__((aligned(4)))
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#else
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#define MEMH_FUNC
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#endif
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#ifdef __cplusplus
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} // End of extern "C"
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#endif
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