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new z80 scheduling method, timers are still wip

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@459 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-05-25 21:25:46 +00:00
parent 170435846c
commit 4b9c588826
15 changed files with 377 additions and 364 deletions
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40
Pico/PicoInt.h
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@ -137,7 +137,7 @@ extern unsigned int SekCycleCntT; // total cycle counter, updated once per frame
SekCycleAim=0; \
}
#define SekCyclesBurn(c) SekCycleCnt+=c
#define SekCyclesDone() (SekCycleAim-SekCyclesLeft) // nuber of cycles done in this frame (can be checked anywhere)
#define SekCyclesDone() (SekCycleAim-SekCyclesLeft) // number of cycles done in this frame (can be checked anywhere)
#define SekCyclesDoneT() (SekCycleCntT+SekCyclesDone()) // total nuber of cycles done for this rom
#define SekEndRun(after) { \
@ -174,10 +174,9 @@ extern int dbg_irq_level;
#if defined(_USE_MZ80)
#include "../cpu/mz80/mz80.h"
#define z80_run(cycles) mz80_run(cycles)
#define z80_run(cycles) { mz80GetElapsedTicks(1); mz80_run(cycles) }
#define z80_run_nr(cycles) mz80_run(cycles)
#define z80_int() mz80int(0)
#define z80_resetCycles() mz80GetElapsedTicks(1)
#elif defined(_USE_DRZ80)
#include "../cpu/DrZ80/drz80.h"
@ -190,7 +189,8 @@ extern struct DrZ80 drZ80;
drZ80.z80irqvector = 0xFF; /* default IRQ vector RST opcode */ \
drZ80.Z80_IRQ = 1; \
}
#define z80_resetCycles()
#define z80_cyclesLeft drZ80.cycles
#elif defined(_USE_CZ80)
#include "../cpu/cz80/cz80.h"
@ -198,17 +198,31 @@ extern struct DrZ80 drZ80;
#define z80_run(cycles) Cz80_Exec(&CZ80, cycles)
#define z80_run_nr(cycles) Cz80_Exec(&CZ80, cycles)
#define z80_int() Cz80_Set_IRQ(&CZ80, 0, HOLD_LINE)
#define z80_resetCycles()
#define z80_cyclesLeft (CZ80.ICount - CZ80.ExtraCycles)
#else
#define z80_run(cycles) (cycles)
#define z80_run_nr(cycles)
#define z80_int()
#define z80_resetCycles()
#endif
extern int z80stopCycle; /* in 68k cycles */
extern int z80_cycle_cnt; /* 'done' z80 cycles before z80_run() */
extern int z80_cycle_aim;
extern int z80_scanline;
extern int z80_scanline_cycles; /* cycles done until z80_scanline */
#define z80_resetCycles() \
z80_cycle_cnt = z80_cycle_aim = z80_scanline = z80_scanline_cycles = 0;
#define z80_cyclesDone() \
(z80_cycle_aim - z80_cyclesLeft)
#define cycles_68k_to_z80(x) ((x)*957 >> 11)
// ---------------------------------------------------------
// main oscillator clock which controls timing
@ -405,6 +419,7 @@ PICO_INTERNAL unsigned short z80_read16(unsigned short a);
#else
PICO_INTERNAL_ASM void z80_write(unsigned int a, unsigned char data);
#endif
PICO_INTERNAL int ym2612_write_local(unsigned int a, unsigned int d, int is_from_z80);
extern unsigned int (*PicoRead16Hook)(unsigned int a, int realsize);
extern void (*PicoWrite8Hook) (unsigned int a,unsigned int d,int realsize);
extern void (*PicoWrite16Hook)(unsigned int a,unsigned int d,int realsize);
@ -421,11 +436,11 @@ PICO_INTERNAL void PicoMemSetupPico(void);
extern struct Pico Pico;
extern struct PicoSRAM SRam;
extern int emustatus;
extern int z80startCycle, z80stopCycle; // in 68k cycles
extern void (*PicoResetHook)(void);
extern void (*PicoLineHook)(int count);
PICO_INTERNAL int CheckDMA(void);
PICO_INTERNAL void PicoDetectRegion(void);
PICO_INTERNAL void PicoSyncZ80(int m68k_cycles_done);
// cd/Pico.c
PICO_INTERNAL int PicoInitMCD(void);
@ -459,6 +474,13 @@ PICO_INTERNAL void cdda_start_play();
extern short cdda_out_buffer[2*1152];
extern int PsndLen_exc_cnt;
extern int PsndLen_exc_add;
extern int timer_a_next_oflow, timer_a_step; // in z80 cycles
#define timers_cycle() \
if (timer_a_next_oflow > 0) timer_a_next_oflow -= Pico.m.pal ? 70938*256 : 59659*256
#define timers_reset() \
timer_a_next_oflow = 0x80000000
// VideoPort.c
PICO_INTERNAL_ASM void PicoVideoWrite(unsigned int a,unsigned short d);
@ -483,7 +505,7 @@ PICO_INTERNAL void PicoCDBufferRead(void *dest, int lba);
// sound/sound.c
PICO_INTERNAL void PsndReset(void);
PICO_INTERNAL void Psnd_timers_and_dac(int raster);
PICO_INTERNAL void PsndDoDAC(int line_to);
PICO_INTERNAL int PsndRender(int offset, int length);
PICO_INTERNAL void PsndClear(void);
// z80 functionality wrappers
@ -492,7 +514,7 @@ PICO_INTERNAL void z80_pack(unsigned char *data);
PICO_INTERNAL void z80_unpack(unsigned char *data);
PICO_INTERNAL void z80_reset(void);
PICO_INTERNAL void z80_exit(void);
extern int PsndDacLine;
#ifdef __cplusplus
} // End of extern "C"