[picodrive.git] / pico / cd / mcd.c

/*
 * PicoDrive
 * (C) notaz, 2007,2013
 *
 * This work is licensed under the terms of MAME license.
 * See COPYING file in the top-level directory.
 */

#include "../pico_int.h"
#include "../sound/ym2612.h"

extern unsigned char formatted_bram[4*0x10];

static unsigned int m68k_cycle_mult;

void (*PicoMCDopenTray)(void) = NULL;
void (*PicoMCDcloseTray)(void) = NULL;


PICO_INTERNAL void PicoInitMCD(void)
{
  SekInitS68k();
  Init_CD_Driver();
}

PICO_INTERNAL void PicoExitMCD(void)
{
  End_CD_Driver();
}

PICO_INTERNAL void PicoPowerMCD(void)
{
  int fmt_size = sizeof(formatted_bram);
  memset(Pico_mcd->prg_ram,    0, sizeof(Pico_mcd->prg_ram));
  memset(Pico_mcd->word_ram2M, 0, sizeof(Pico_mcd->word_ram2M));
  memset(Pico_mcd->pcm_ram,    0, sizeof(Pico_mcd->pcm_ram));
  memset(Pico_mcd->bram, 0, sizeof(Pico_mcd->bram));
  memcpy(Pico_mcd->bram + sizeof(Pico_mcd->bram) - fmt_size,
    formatted_bram, fmt_size);
  memset(Pico_mcd->s68k_regs, 0, sizeof(Pico_mcd->s68k_regs));
  memset(&Pico_mcd->pcm, 0, sizeof(Pico_mcd->pcm));
  memset(&Pico_mcd->m, 0, sizeof(Pico_mcd->m));

  // cold reset state (tested)
  Pico_mcd->m.state_flags = PCD_ST_S68K_RST;
  Pico_mcd->m.busreq = 2;     // busreq on, s68k in reset
  Pico_mcd->s68k_regs[3] = 1; // 2M word RAM mode, m68k access
  Pico_mcd->s68k_regs[6] = 0xff;
  Pico_mcd->s68k_regs[7] = 0xff;
  memset(Pico_mcd->bios + 0x70, 0xff, 4);
}

PICO_INTERNAL int PicoResetMCD(void)
{
  // ??
  Reset_CD();
  LC89510_Reset();
  gfx_cd_reset();
#ifdef _ASM_CD_MEMORY_C
  //PicoMemResetCDdecode(1); // don't have to call this in 2M mode
#endif

  // use SRam.data for RAM cart
  if (PicoOpt & POPT_EN_MCD_RAMCART) {
    if (SRam.data == NULL)
      SRam.data = calloc(1, 0x12000);
  }
  else if (SRam.data != NULL) {
    free(SRam.data);
    SRam.data = NULL;
  }
  SRam.start = SRam.end = 0; // unused

  pcd_event_schedule(0, PCD_EVENT_CDC, 12500000/75);

  return 0;
}

static __inline void SekRunS68k(unsigned int to)
{
  int cyc_do;

  SekCycleAimS68k = to;
  if ((cyc_do = SekCycleAimS68k - SekCycleCntS68k) <= 0)
    return;

  SekCycleCntS68k += cyc_do;
#if defined(EMU_C68K)
  PicoCpuCS68k.cycles = cyc_do;
  CycloneRun(&PicoCpuCS68k);
  SekCycleCntS68k -= PicoCpuCS68k.cycles;
#elif defined(EMU_M68K)
  m68k_set_context(&PicoCpuMS68k);
  SekCycleCntS68k += m68k_execute(cyc_do) - cyc_do;
  m68k_set_context(&PicoCpuMM68k);
#elif defined(EMU_F68K)
  g_m68kcontext = &PicoCpuFS68k;
  SekCycleCntS68k += fm68k_emulate(cyc_do, 0, 0) - cyc_do;
  g_m68kcontext = &PicoCpuFM68k;
#endif
}


unsigned int pcd_cycles_m68k_to_s68k(unsigned int c)
{
  return (long long)c * m68k_cycle_mult >> 16;
}

/* events */
static void pcd_cdc_event(unsigned int now)
{
  // 75Hz CDC update
  Check_CD_Command();
  pcd_event_schedule(now, PCD_EVENT_CDC, 12500000/75);
}

static void pcd_int3_timer_event(unsigned int now)
{
  if (Pico_mcd->s68k_regs[0x33] & PCDS_IEN3) {
    elprintf(EL_INTS|EL_CD, "s68k: timer irq 3");
    SekInterruptS68k(3);
  }

  if (Pico_mcd->s68k_regs[0x31] != 0)
    pcd_event_schedule(now, PCD_EVENT_TIMER3,
      Pico_mcd->s68k_regs[0x31] * 384);
}

static void pcd_gfx_event(unsigned int now)
{
  // update gfx chip
  if (Pico_mcd->rot_comp.Reg_58 & 0x8000) {
    Pico_mcd->rot_comp.Reg_58 &= 0x7fff;
    Pico_mcd->rot_comp.Reg_64  = 0;
    if (Pico_mcd->s68k_regs[0x33] & PCDS_IEN1) {
      elprintf(EL_INTS  |EL_CD, "s68k: gfx_cd irq 1");
      SekInterruptS68k(1);
    }
  }
}

static void pcd_dma_event(unsigned int now)
{
  int ddx = Pico_mcd->s68k_regs[4] & 7;
	Update_CDC_TRansfer(ddx);
}

typedef void (event_cb)(unsigned int now);

/* times are in s68k (12.5MHz) cycles */
unsigned int pcd_event_times[PCD_EVENT_COUNT];
static unsigned int event_time_next;
static event_cb *pcd_event_cbs[PCD_EVENT_COUNT] = {
  [PCD_EVENT_CDC]      = pcd_cdc_event,
  [PCD_EVENT_TIMER3]   = pcd_int3_timer_event,
  [PCD_EVENT_GFX]      = pcd_gfx_event,
  [PCD_EVENT_DMA]      = pcd_dma_event,
};

void pcd_event_schedule(unsigned int now, enum pcd_event event, int after)
{
  unsigned int when;

  when = now + after;
  if (when == 0) {
    // event cancelled
    pcd_event_times[event] = 0;
    return;
  }

  when |= 1;

  elprintf(EL_CD, "cd: new event #%u %u->%u", event, now, when);
  pcd_event_times[event] = when;

  if (event_time_next == 0 || CYCLES_GT(event_time_next, when))
    event_time_next = when;
}

void pcd_event_schedule_s68k(enum pcd_event event, int after)
{
  if (SekCyclesLeftS68k > after)
    SekEndRunS68k(after);

  pcd_event_schedule(SekCyclesDoneS68k(), event, after);
}

static void pcd_run_events(unsigned int until)
{
  int oldest, oldest_diff, time;
  int i, diff;

  while (1) {
    oldest = -1, oldest_diff = 0x7fffffff;

    for (i = 0; i < PCD_EVENT_COUNT; i++) {
      if (pcd_event_times[i]) {
        diff = pcd_event_times[i] - until;
        if (diff < oldest_diff) {
          oldest_diff = diff;
          oldest = i;
        }
      }
    }

    if (oldest_diff <= 0) {
      time = pcd_event_times[oldest];
      pcd_event_times[oldest] = 0;
      elprintf(EL_CD, "cd: run event #%d %u", oldest, time);
      pcd_event_cbs[oldest](time);
    }
    else if (oldest_diff < 0x7fffffff) {
      event_time_next = pcd_event_times[oldest];
      break;
    }
    else {
      event_time_next = 0;
      break;
    }
  }

  if (oldest != -1)
    elprintf(EL_CD, "cd: next event #%d at %u",
      oldest, event_time_next);
}

int pcd_sync_s68k(unsigned int m68k_target, int m68k_poll_sync)
{
  #define now SekCycleCntS68k
  unsigned int s68k_target =
    (unsigned long long)m68k_target * m68k_cycle_mult >> 16;
  unsigned int target;

  elprintf(EL_CD, "s68k sync to %u, %u->%u",
    m68k_target, now, s68k_target);

  if (Pico_mcd->m.busreq != 1) { /* busreq/reset */
    SekCycleCntS68k = SekCycleAimS68k = s68k_target;
    pcd_run_events(m68k_target);
    return 0;
  }

  while (CYCLES_GT(s68k_target, now)) {
    if (event_time_next && CYCLES_GE(now, event_time_next))
      pcd_run_events(now);

    target = s68k_target;
    if (event_time_next && CYCLES_GT(target, event_time_next))
      target = event_time_next;

    SekRunS68k(target);
    if (m68k_poll_sync && Pico_mcd->m.m68k_poll_cnt == 0)
      break;
  }

  return s68k_target - now;
  #undef now
}

#define pcd_run_cpus_normal pcd_run_cpus
//#define pcd_run_cpus_lockstep pcd_run_cpus

static void SekSyncM68k(void);

static inline void pcd_run_cpus_normal(int m68k_cycles)
{
  SekCycleAim += m68k_cycles;
  if (Pico_mcd->m.m68k_poll_cnt >= 16 && !SekShouldInterrupt()) {
    int s68k_left = pcd_sync_s68k(SekCycleAim, 1);
    if (s68k_left <= 0) {
      elprintf(EL_CDPOLL, "m68k poll [%02x] x%d @%06x",
        Pico_mcd->m.m68k_poll_a, Pico_mcd->m.m68k_poll_cnt, SekPc);
      SekCycleCnt = SekCycleAim;
      return;
    }
    SekCycleCnt = SekCycleAim - (s68k_left * 40220 >> 16);
  }

  SekSyncM68k();
}

static inline void pcd_run_cpus_lockstep(int m68k_cycles)
{
  unsigned int target = SekCycleAim + m68k_cycles;
  do {
    SekCycleAim += 8;
    SekSyncM68k();
    pcd_sync_s68k(SekCycleAim, 0);
  } while (CYCLES_GT(target, SekCycleAim));
}

#define PICO_CD
#define CPUS_RUN(m68k_cycles) \
  pcd_run_cpus(m68k_cycles)

#include "../pico_cmn.c"


PICO_INTERNAL void PicoFrameMCD(void)
{
  if (!(PicoOpt&POPT_ALT_RENDERER))
    PicoFrameStart();

  // ~1.63 for NTSC, ~1.645 for PAL
  if (Pico.m.pal)
    m68k_cycle_mult = ((12500000ull << 16) / (50*312*488));
  else
    m68k_cycle_mult = ((12500000ull << 16) / (60*262*488)) + 1;

  PicoFrameHints();
}

void pcd_state_loaded(void)
{
  unsigned int cycles;
  int diff;

  pcd_state_loaded_mem();

  // old savestates..
  cycles = pcd_cycles_m68k_to_s68k(SekCycleAim);
  diff = cycles - SekCycleAimS68k;
  if (diff < -1000 || diff > 1000) {
    SekCycleCntS68k = SekCycleAimS68k = cycles;
  }
  if (pcd_event_times[PCD_EVENT_CDC] == 0) {
    pcd_event_schedule(SekCycleAimS68k, PCD_EVENT_CDC, 12500000/75);

    if (Pico_mcd->s68k_regs[0x31])
      pcd_event_schedule(SekCycleAimS68k, PCD_EVENT_TIMER3,
        Pico_mcd->s68k_regs[0x31] * 384);

    if (Pico_mcd->rot_comp.Reg_58 & 0x8000) {
      Pico_mcd->rot_comp.Reg_58 &= 0x7fff;
      Pico_mcd->rot_comp.Reg_64  = 0;
      if (Pico_mcd->s68k_regs[0x33] & PCDS_IEN1)
        SekInterruptS68k(1);
    }
    if (Pico_mcd->scd.Status_CDC & 0x08)
	    Update_CDC_TRansfer(Pico_mcd->s68k_regs[4] & 7);
  }
}

// vim:shiftwidth=2:ts=2:expandtab
Commit	Line	Data
	1	/*
	2	* PicoDrive
	3	* (C) notaz, 2007,2013
	4	*
	5	* This work is licensed under the terms of MAME license.
	6	* See COPYING file in the top-level directory.
	7	*/
	8
	9	#include "../pico_int.h"
	10	#include "../sound/ym2612.h"
	11
	12	extern unsigned char formatted_bram[4*0x10];
	13
	14	static unsigned int m68k_cycle_mult;
	15
	16	void (*PicoMCDopenTray)(void) = NULL;
	17	void (*PicoMCDcloseTray)(void) = NULL;
	18
	19
	20	PICO_INTERNAL void PicoInitMCD(void)
	21	{
	22	SekInitS68k();
	23	Init_CD_Driver();
	24	}
	25
	26	PICO_INTERNAL void PicoExitMCD(void)
	27	{
	28	End_CD_Driver();
	29	}
	30
	31	PICO_INTERNAL void PicoPowerMCD(void)
	32	{
	33	int fmt_size = sizeof(formatted_bram);
	34	memset(Pico_mcd->prg_ram, 0, sizeof(Pico_mcd->prg_ram));
	35	memset(Pico_mcd->word_ram2M, 0, sizeof(Pico_mcd->word_ram2M));
	36	memset(Pico_mcd->pcm_ram, 0, sizeof(Pico_mcd->pcm_ram));
	37	memset(Pico_mcd->bram, 0, sizeof(Pico_mcd->bram));
	38	memcpy(Pico_mcd->bram + sizeof(Pico_mcd->bram) - fmt_size,
	39	formatted_bram, fmt_size);
	40	memset(Pico_mcd->s68k_regs, 0, sizeof(Pico_mcd->s68k_regs));
	41	memset(&Pico_mcd->pcm, 0, sizeof(Pico_mcd->pcm));
	42	memset(&Pico_mcd->m, 0, sizeof(Pico_mcd->m));
	43
	44	// cold reset state (tested)
	45	Pico_mcd->m.state_flags = PCD_ST_S68K_RST;
	46	Pico_mcd->m.busreq = 2; // busreq on, s68k in reset
	47	Pico_mcd->s68k_regs[3] = 1; // 2M word RAM mode, m68k access
	48	Pico_mcd->s68k_regs[6] = 0xff;
	49	Pico_mcd->s68k_regs[7] = 0xff;
	50	memset(Pico_mcd->bios + 0x70, 0xff, 4);
	51	}
	52
	53	PICO_INTERNAL int PicoResetMCD(void)
	54	{
	55	// ??
	56	Reset_CD();
	57	LC89510_Reset();
	58	gfx_cd_reset();
	59	#ifdef _ASM_CD_MEMORY_C
	60	//PicoMemResetCDdecode(1); // don't have to call this in 2M mode
	61	#endif
	62
	63	// use SRam.data for RAM cart
	64	if (PicoOpt & POPT_EN_MCD_RAMCART) {
	65	if (SRam.data == NULL)
	66	SRam.data = calloc(1, 0x12000);
	67	}
	68	else if (SRam.data != NULL) {
	69	free(SRam.data);
	70	SRam.data = NULL;
	71	}
	72	SRam.start = SRam.end = 0; // unused
	73
	74	pcd_event_schedule(0, PCD_EVENT_CDC, 12500000/75);
	75
	76	return 0;
	77	}
	78
	79	static __inline void SekRunS68k(unsigned int to)
	80	{
	81	int cyc_do;
	82
	83	SekCycleAimS68k = to;
	84	if ((cyc_do = SekCycleAimS68k - SekCycleCntS68k) <= 0)
	85	return;
	86
	87	SekCycleCntS68k += cyc_do;
	88	#if defined(EMU_C68K)
	89	PicoCpuCS68k.cycles = cyc_do;
	90	CycloneRun(&PicoCpuCS68k);
	91	SekCycleCntS68k -= PicoCpuCS68k.cycles;
	92	#elif defined(EMU_M68K)
	93	m68k_set_context(&PicoCpuMS68k);
	94	SekCycleCntS68k += m68k_execute(cyc_do) - cyc_do;
	95	m68k_set_context(&PicoCpuMM68k);
	96	#elif defined(EMU_F68K)
	97	g_m68kcontext = &PicoCpuFS68k;
	98	SekCycleCntS68k += fm68k_emulate(cyc_do, 0, 0) - cyc_do;
	99	g_m68kcontext = &PicoCpuFM68k;
	100	#endif
	101	}
	102
	103
	104	unsigned int pcd_cycles_m68k_to_s68k(unsigned int c)
	105	{
	106	return (long long)c * m68k_cycle_mult >> 16;
	107	}
	108
	109	/* events */
	110	static void pcd_cdc_event(unsigned int now)
	111	{
	112	// 75Hz CDC update
	113	Check_CD_Command();
	114	pcd_event_schedule(now, PCD_EVENT_CDC, 12500000/75);
	115	}
	116
	117	static void pcd_int3_timer_event(unsigned int now)
	118	{
	119	if (Pico_mcd->s68k_regs[0x33] & PCDS_IEN3) {
	120	elprintf(EL_INTS\|EL_CD, "s68k: timer irq 3");
	121	SekInterruptS68k(3);
	122	}
	123
	124	if (Pico_mcd->s68k_regs[0x31] != 0)
	125	pcd_event_schedule(now, PCD_EVENT_TIMER3,
	126	Pico_mcd->s68k_regs[0x31] * 384);
	127	}
	128
	129	static void pcd_gfx_event(unsigned int now)
	130	{
	131	// update gfx chip
	132	if (Pico_mcd->rot_comp.Reg_58 & 0x8000) {
	133	Pico_mcd->rot_comp.Reg_58 &= 0x7fff;
	134	Pico_mcd->rot_comp.Reg_64 = 0;
	135	if (Pico_mcd->s68k_regs[0x33] & PCDS_IEN1) {
	136	elprintf(EL_INTS \|EL_CD, "s68k: gfx_cd irq 1");
	137	SekInterruptS68k(1);
	138	}
	139	}
	140	}
	141
	142	static void pcd_dma_event(unsigned int now)
	143	{
	144	int ddx = Pico_mcd->s68k_regs[4] & 7;
	145	Update_CDC_TRansfer(ddx);
	146	}
	147
	148	typedef void (event_cb)(unsigned int now);
	149
	150	/* times are in s68k (12.5MHz) cycles */
	151	unsigned int pcd_event_times[PCD_EVENT_COUNT];
	152	static unsigned int event_time_next;
	153	static event_cb *pcd_event_cbs[PCD_EVENT_COUNT] = {
	154	[PCD_EVENT_CDC] = pcd_cdc_event,
	155	[PCD_EVENT_TIMER3] = pcd_int3_timer_event,
	156	[PCD_EVENT_GFX] = pcd_gfx_event,
	157	[PCD_EVENT_DMA] = pcd_dma_event,
	158	};
	159
	160	void pcd_event_schedule(unsigned int now, enum pcd_event event, int after)
	161	{
	162	unsigned int when;
	163
	164	when = now + after;
	165	if (when == 0) {
	166	// event cancelled
	167	pcd_event_times[event] = 0;
	168	return;
	169	}
	170
	171	when \|= 1;
	172
	173	elprintf(EL_CD, "cd: new event #%u %u->%u", event, now, when);
	174	pcd_event_times[event] = when;
	175
	176	if (event_time_next == 0 \|\| CYCLES_GT(event_time_next, when))
	177	event_time_next = when;
	178	}
	179
	180	void pcd_event_schedule_s68k(enum pcd_event event, int after)
	181	{
	182	if (SekCyclesLeftS68k > after)
	183	SekEndRunS68k(after);
	184
	185	pcd_event_schedule(SekCyclesDoneS68k(), event, after);
	186	}
	187
	188	static void pcd_run_events(unsigned int until)
	189	{
	190	int oldest, oldest_diff, time;
	191	int i, diff;
	192
	193	while (1) {
	194	oldest = -1, oldest_diff = 0x7fffffff;
	195
	196	for (i = 0; i < PCD_EVENT_COUNT; i++) {
	197	if (pcd_event_times[i]) {
	198	diff = pcd_event_times[i] - until;
	199	if (diff < oldest_diff) {
	200	oldest_diff = diff;
	201	oldest = i;
	202	}
	203	}
	204	}
	205
	206	if (oldest_diff <= 0) {
	207	time = pcd_event_times[oldest];
	208	pcd_event_times[oldest] = 0;
	209	elprintf(EL_CD, "cd: run event #%d %u", oldest, time);
	210	pcd_event_cbs[oldest](time);
	211	}
	212	else if (oldest_diff < 0x7fffffff) {
	213	event_time_next = pcd_event_times[oldest];
	214	break;
	215	}
	216	else {
	217	event_time_next = 0;
	218	break;
	219	}
	220	}
	221
	222	if (oldest != -1)
	223	elprintf(EL_CD, "cd: next event #%d at %u",
	224	oldest, event_time_next);
	225	}
	226
	227	int pcd_sync_s68k(unsigned int m68k_target, int m68k_poll_sync)
	228	{
	229	#define now SekCycleCntS68k
	230	unsigned int s68k_target =
	231	(unsigned long long)m68k_target * m68k_cycle_mult >> 16;
	232	unsigned int target;
	233
	234	elprintf(EL_CD, "s68k sync to %u, %u->%u",
	235	m68k_target, now, s68k_target);
	236
	237	if (Pico_mcd->m.busreq != 1) { /* busreq/reset */
	238	SekCycleCntS68k = SekCycleAimS68k = s68k_target;
	239	pcd_run_events(m68k_target);
	240	return 0;
	241	}
	242
	243	while (CYCLES_GT(s68k_target, now)) {
	244	if (event_time_next && CYCLES_GE(now, event_time_next))
	245	pcd_run_events(now);
	246
	247	target = s68k_target;
	248	if (event_time_next && CYCLES_GT(target, event_time_next))
	249	target = event_time_next;
	250
	251	SekRunS68k(target);
	252	if (m68k_poll_sync && Pico_mcd->m.m68k_poll_cnt == 0)
	253	break;
	254	}
	255
	256	return s68k_target - now;
	257	#undef now
	258	}
	259
	260	#define pcd_run_cpus_normal pcd_run_cpus
	261	//#define pcd_run_cpus_lockstep pcd_run_cpus
	262
	263	static void SekSyncM68k(void);
	264
	265	static inline void pcd_run_cpus_normal(int m68k_cycles)
	266	{
	267	SekCycleAim += m68k_cycles;
	268	if (Pico_mcd->m.m68k_poll_cnt >= 16 && !SekShouldInterrupt()) {
	269	int s68k_left = pcd_sync_s68k(SekCycleAim, 1);
	270	if (s68k_left <= 0) {
	271	elprintf(EL_CDPOLL, "m68k poll [%02x] x%d @%06x",
	272	Pico_mcd->m.m68k_poll_a, Pico_mcd->m.m68k_poll_cnt, SekPc);
	273	SekCycleCnt = SekCycleAim;
	274	return;
	275	}
	276	SekCycleCnt = SekCycleAim - (s68k_left * 40220 >> 16);
	277	}
	278
	279	SekSyncM68k();
	280	}
	281
	282	static inline void pcd_run_cpus_lockstep(int m68k_cycles)
	283	{
	284	unsigned int target = SekCycleAim + m68k_cycles;
	285	do {
	286	SekCycleAim += 8;
	287	SekSyncM68k();
	288	pcd_sync_s68k(SekCycleAim, 0);
	289	} while (CYCLES_GT(target, SekCycleAim));
	290	}
	291
	292	#define PICO_CD
	293	#define CPUS_RUN(m68k_cycles) \
	294	pcd_run_cpus(m68k_cycles)
	295
	296	#include "../pico_cmn.c"
	297
	298
	299	PICO_INTERNAL void PicoFrameMCD(void)
	300	{
	301	if (!(PicoOpt&POPT_ALT_RENDERER))
	302	PicoFrameStart();
	303
	304	// ~1.63 for NTSC, ~1.645 for PAL
	305	if (Pico.m.pal)
	306	m68k_cycle_mult = ((12500000ull << 16) / (50312488));
	307	else
	308	m68k_cycle_mult = ((12500000ull << 16) / (60262488)) + 1;
	309
	310	PicoFrameHints();
	311	}
	312
	313	void pcd_state_loaded(void)
	314	{
	315	unsigned int cycles;
	316	int diff;
	317
	318	pcd_state_loaded_mem();
	319
	320	// old savestates..
	321	cycles = pcd_cycles_m68k_to_s68k(SekCycleAim);
	322	diff = cycles - SekCycleAimS68k;
	323	if (diff < -1000 \|\| diff > 1000) {
	324	SekCycleCntS68k = SekCycleAimS68k = cycles;
	325	}
	326	if (pcd_event_times[PCD_EVENT_CDC] == 0) {
	327	pcd_event_schedule(SekCycleAimS68k, PCD_EVENT_CDC, 12500000/75);
	328
	329	if (Pico_mcd->s68k_regs[0x31])
	330	pcd_event_schedule(SekCycleAimS68k, PCD_EVENT_TIMER3,
	331	Pico_mcd->s68k_regs[0x31] * 384);
	332
	333	if (Pico_mcd->rot_comp.Reg_58 & 0x8000) {
	334	Pico_mcd->rot_comp.Reg_58 &= 0x7fff;
	335	Pico_mcd->rot_comp.Reg_64 = 0;
	336	if (Pico_mcd->s68k_regs[0x33] & PCDS_IEN1)
	337	SekInterruptS68k(1);
	338	}
	339	if (Pico_mcd->scd.Status_CDC & 0x08)
	340	Update_CDC_TRansfer(Pico_mcd->s68k_regs[4] & 7);
	341	}
	342	}
	343
	344	// vim:shiftwidth=2:ts=2:expandtab