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adjust z80 timing a bit

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This commit is contained in:
notaz 2017-10-04 02:23:27 +03:00
parent ebd70cb5d9
commit 3162a7104c
4 changed files with 32 additions and 33 deletions
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23
pico/pico_int.h
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@ -211,20 +211,13 @@ extern struct DrZ80 drZ80;
#define Z80_STATE_SIZE 0x60
extern unsigned int last_z80_sync;
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() \
last_z80_sync = SekCyclesDone(); \
z80_cycle_cnt = z80_cycle_aim = z80_scanline = z80_scanline_cycles = 0;
timing.z80c_cnt = timing.z80c_aim = timing.z80_scanline = 0
#define z80_cyclesDone() \
(z80_cycle_aim - z80_cyclesLeft)
(timing.z80c_aim - z80_cyclesLeft)
#define cycles_68k_to_z80(x) ((x)*957 >> 11)
#define cycles_68k_to_z80(x) ((x) * 3823 >> 13)
// ----------------------- SH2 CPU -----------------------
@ -599,6 +592,15 @@ struct Pico32xMem
unsigned short pwm_fifo[2][4]; // [0] - current raw, others - fifo entries
};
struct PicoTiming
{
unsigned int m68c_frame_start; // m68k cycles
unsigned int z80c_cnt; // z80 cycles done (this frame)
unsigned int z80c_aim;
int z80_scanline;
};
extern struct PicoTiming timing;
// area.c
extern void (*PicoLoadStateHook)(void);
@ -1092,3 +1094,4 @@ void pevt_dump(void);
#endif // PICO_INTERNAL_INCLUDED
// vim:shiftwidth=2:ts=2:expandtab