[picodrive.git] / pico / carthw / carthw.c

/*
 * Support for a few cart mappers and some protection.
 *
 * (c) Copyright 2008-2009, Grazvydas "notaz" Ignotas
 * Free for non-commercial use.
 *
 */

#include "../pico_int.h"
#include "../memory.h"


/* The SSFII mapper */
unsigned char ssf2_banks[8];

static carthw_state_chunk carthw_ssf2_state[] =
{
	{ CHUNK_CARTHW, sizeof(ssf2_banks), &ssf2_banks },
	{ 0,            0,                  NULL }
};

static void carthw_ssf2_write8(u32 a, u32 d)
{
	u32 target, base;

	if ((a & 0xfffff0) != 0xa130f0) {
		PicoWrite8_io(a, d);
		return;
	}

	a &= 0x0e;
	if (a == 0)
		return;

	ssf2_banks[a >> 1] = d;
	base = d << 19;
	target = a << 18;
	if (base + 0x80000 > Pico.romsize) {
		elprintf(EL_ANOMALY|EL_STATUS, "ssf2: missing bank @ %06x", base);
		return;
	}

	cpu68k_map_set(m68k_read8_map,  target, target + 0x80000 - 1, Pico.rom + base, 0);
	cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
}

static void carthw_ssf2_mem_setup(void)
{
	cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1);
}

static void carthw_ssf2_statef(void)
{
	int i;
	for (i = 1; i < 8; i++)
		carthw_ssf2_write8(0xa130f0 | (i << 1), ssf2_banks[i]);
}

void carthw_ssf2_startup(void)
{
	int i;

	elprintf(EL_STATUS, "SSF2 mapper startup");

	// default map
	for (i = 0; i < 8; i++)
		ssf2_banks[i] = i;

	PicoCartMemSetup  = carthw_ssf2_mem_setup;
	PicoLoadStateHook = carthw_ssf2_statef;
	carthw_chunks     = carthw_ssf2_state;
}


/* Common *-in-1 pirate mapper.
 * Switches banks based on addr lines when /TIME is set.
 * TODO: verify
 */
static unsigned int carthw_Xin1_baddr = 0;

static void carthw_Xin1_do(u32 a, int mask, int shift)
{
	int len;

	carthw_Xin1_baddr = a;
	a &= mask;
	a <<= shift;
	len = Pico.romsize - a;
	if (len <= 0) {
		elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a);
		return;
	}

	len = (len + M68K_BANK_MASK) & ~M68K_BANK_MASK;
	cpu68k_map_set(m68k_read8_map,  0x000000, len - 1, Pico.rom + a, 0);
	cpu68k_map_set(m68k_read16_map, 0x000000, len - 1, Pico.rom + a, 0);
}

static carthw_state_chunk carthw_Xin1_state[] =
{
	{ CHUNK_CARTHW, sizeof(carthw_Xin1_baddr), &carthw_Xin1_baddr },
	{ 0,            0,                         NULL }
};

// TODO: test a0, reads, w16
static void carthw_Xin1_write8(u32 a, u32 d)
{
	if ((a & 0xffff00) != 0xa13000) {
		PicoWrite8_io(a, d);
		return;
	}

	carthw_Xin1_do(a, 0x3f, 16);
}

static void carthw_Xin1_mem_setup(void)
{
	cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1);
}

static void carthw_Xin1_reset(void)
{
	carthw_Xin1_write8(0xa13000, 0);
}

static void carthw_Xin1_statef(void)
{
	carthw_Xin1_write8(carthw_Xin1_baddr, 0);
}

void carthw_Xin1_startup(void)
{
	elprintf(EL_STATUS, "X-in-1 mapper startup");

	PicoCartMemSetup  = carthw_Xin1_mem_setup;
	PicoResetHook     = carthw_Xin1_reset;
	PicoLoadStateHook = carthw_Xin1_statef;
	carthw_chunks     = carthw_Xin1_state;
}


/* Realtec, based on TascoDLX doc
 * http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt
 */
static int realtec_bank = 0x80000000, realtec_size = 0x80000000;

static void carthw_realtec_write8(u32 a, u32 d)
{
	int i, bank_old = realtec_bank, size_old = realtec_size;

	if (a == 0x400000)
	{
		realtec_bank &= 0x0e0000;
		realtec_bank |= 0x300000 & (d << 19);
		if (realtec_bank != bank_old)
			elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
	}
	else if (a == 0x402000)
	{
		realtec_size = (d << 17) & 0x3e0000;
		if (realtec_size != size_old)
			elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
	}
	else if (a == 0x404000)
	{
		realtec_bank &= 0x300000;
		realtec_bank |= 0x0e0000 & (d << 17);
		if (realtec_bank != bank_old)
			elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
	}
	else
		elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc);

	if (realtec_bank >= 0 && realtec_size >= 0 &&
		(realtec_bank != bank_old || realtec_size != size_old))
	{
		elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc);
		if (realtec_size > Pico.romsize - realtec_bank)
		{
			elprintf(EL_ANOMALY, "realtec: bank too large / out of range?");
			return;
		}

		for (i = 0; i < 0x400000; i += realtec_size) {
			cpu68k_map_set(m68k_read8_map,  i, realtec_size - 1, Pico.rom + realtec_bank, 0);
			cpu68k_map_set(m68k_read16_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
		}
	}
}

static void carthw_realtec_reset(void)
{
	int i;

	/* map boot code */
	for (i = 0; i < 0x400000; i += M68K_BANK_SIZE) {
		cpu68k_map_set(m68k_read8_map,  i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
		cpu68k_map_set(m68k_read16_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
	}
	cpu68k_map_set(m68k_write8_map, 0x400000, 0x400000 + M68K_BANK_SIZE - 1, carthw_realtec_write8, 1);
	realtec_bank = realtec_size = 0x80000000;
}

void carthw_realtec_startup(void)
{
	void *tmp;
	int i;

	elprintf(EL_STATUS, "Realtec mapper startup");

	// allocate additional bank for boot code
	// (we know those ROMs have aligned size)
	tmp = realloc(Pico.rom, Pico.romsize + M68K_BANK_SIZE);
	if (tmp == NULL)
	{
		elprintf(EL_STATUS, "OOM");
		return;
	}
	Pico.rom = tmp;

	// create bank for boot code
	for (i = 0; i < M68K_BANK_SIZE; i += 0x2000)
		memcpy(Pico.rom + Pico.romsize + i, Pico.rom + Pico.romsize - 0x2000, 0x2000);

	PicoResetHook = carthw_realtec_reset;
}

/* Radica mapper, based on DevSter's info
 * http://devster.monkeeh.com/sega/radica/
 * XXX: mostly the same as X-in-1, merge?
 */
static u32 carthw_radica_read16(u32 a)
{
	if ((a & 0xffff00) != 0xa13000)
		return PicoRead16_io(a);

	carthw_Xin1_do(a, 0x7e, 15);

	return 0;
}

static void carthw_radica_mem_setup(void)
{
	cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1);
}

static void carthw_radica_statef(void)
{
	carthw_radica_read16(carthw_Xin1_baddr);
}

static void carthw_radica_reset(void)
{
	carthw_radica_read16(0xa13000);
}

void carthw_radica_startup(void)
{
	elprintf(EL_STATUS, "Radica mapper startup");

	PicoCartMemSetup  = carthw_radica_mem_setup;
	PicoResetHook     = carthw_radica_reset;
	PicoLoadStateHook = carthw_radica_statef;
	carthw_chunks     = carthw_Xin1_state;
}

/* Simple unlicensed ROM protection emulation */
static struct {
	u32 addr;
	u32 mask;
	u16 val;
	u16 readonly;
} *sprot_items;
static int sprot_item_alloc;
static int sprot_item_count;

static u16 *carthw_sprot_get_val(u32 a, int rw_only)
{
	int i;

	for (i = 0; i < sprot_item_count; i++)
		if ((a & sprot_items[i].mask) == sprot_items[i].addr)
			if (!rw_only || !sprot_items[i].readonly)
				return &sprot_items[i].val;
	return NULL;
}

static u32 PicoRead8_sprot(u32 a)
{
  u16 *val;
  u32 d;

  if (0xa10000 <= a && a < 0xa12000)
    return PicoRead8_io(a);

  val = carthw_sprot_get_val(a, 0);
  if (val != NULL) {
    d = *val;
    if (!(a & 1))
      d >>= 8;
    elprintf(EL_UIO, "prot r8  [%06x]   %02x @%06x", a, d, SekPc);
    return d;
  }
  else {
    elprintf(EL_UIO, "prot r8  [%06x] MISS @%06x", a, SekPc);
    return 0;
  }
}

static u32 PicoRead16_sprot(u32 a)
{
  u16 *val;

  if (0xa10000 <= a && a < 0xa12000)
    return PicoRead16_io(a);

  val = carthw_sprot_get_val(a, 0);
  if (val != NULL) {
    elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc);
    return *val;
  }
  else {
    elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc);
    return 0;
  }
}

static void PicoWrite8_sprot(u32 a, u32 d)
{
  u16 *val;

  if (0xa10000 <= a && a < 0xa12000) {
    PicoWrite8_io(a, d);
    return;
  }

  val = carthw_sprot_get_val(a, 1);
  if (val != NULL) {
    if (a & 1)
      *val = (*val & 0xff00) | (d | 0xff);
    else
      *val = (*val & 0x00ff) | (d << 8);
    elprintf(EL_UIO, "prot w8  [%06x]   %02x @%06x", a, d & 0xff, SekPc);
  }
  else
    elprintf(EL_UIO, "prot w8  [%06x]   %02x MISS @%06x", a, d & 0xff, SekPc);
}

static void PicoWrite16_sprot(u32 a, u32 d)
{
  u16 *val;

  if (0xa10000 <= a && a < 0xa12000) {
    PicoWrite16_io(a, d);
    return;
  }

  val = carthw_sprot_get_val(a, 1);
  if (val != NULL) {
    *val = d;
    elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
  }
  else
    elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc);
}

void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro)
{
  if (sprot_items == NULL) {
    sprot_items = calloc(8, sizeof(sprot_items[0]));
    sprot_item_alloc = 8;
    sprot_item_count = 0;
  }

  if (sprot_item_count == sprot_item_alloc) {
    void *tmp;
    sprot_item_alloc *= 2;
    tmp = realloc(sprot_items, sprot_item_alloc);
    if (tmp == NULL) {
      elprintf(EL_STATUS, "OOM");
      return;
    }
    sprot_items = tmp;
  }

  sprot_items[sprot_item_count].addr = a;
  sprot_items[sprot_item_count].mask = mask;
  sprot_items[sprot_item_count].val = val;
  sprot_items[sprot_item_count].readonly = is_ro;
  sprot_item_count++;
}

static void carthw_sprot_unload(void)
{
  free(sprot_items);
  sprot_items = NULL;
  sprot_item_count = sprot_item_alloc = 0;
}

static void carthw_sprot_mem_setup(void)
{
  int start;

  // map ROM - 0x7fffff, /TIME areas (which are tipically used)
  start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK;
  cpu68k_map_set(m68k_read8_map,   start, 0x7fffff, PicoRead8_sprot, 1);
  cpu68k_map_set(m68k_read16_map,  start, 0x7fffff, PicoRead16_sprot, 1);
  cpu68k_map_set(m68k_write8_map,  start, 0x7fffff, PicoWrite8_sprot, 1);
  cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1);

  cpu68k_map_set(m68k_read8_map,   0xa10000, 0xa1ffff, PicoRead8_sprot, 1);
  cpu68k_map_set(m68k_read16_map,  0xa10000, 0xa1ffff, PicoRead16_sprot, 1);
  cpu68k_map_set(m68k_write8_map,  0xa10000, 0xa1ffff, PicoWrite8_sprot, 1);
  cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1);
}

void carthw_sprot_startup(void)
{
  elprintf(EL_STATUS, "Prot emu startup");

  PicoCartMemSetup   = carthw_sprot_mem_setup;
  PicoCartUnloadHook = carthw_sprot_unload;
}

/* Protection emulation for Lion King 3. Credits go to Haze */
static u8 prot_lk3_cmd, prot_lk3_data;

static u32 PicoRead8_plk3(u32 a)
{
  u32 d = 0;
  switch (prot_lk3_cmd) {
    case 1: d = prot_lk3_data >> 1; break;
    case 2: // nibble rotate
      d = ((prot_lk3_data >> 4) | (prot_lk3_data << 4)) & 0xff;
      break;
    case 3: // bit rotate
      d = prot_lk3_data;
      d = (d >> 4) | (d << 4);
      d = ((d & 0xcc) >> 2) | ((d & 0x33) << 2);
      d = ((d & 0xaa) >> 1) | ((d & 0x55) << 1);
      break;
/* Top Fighter 2000 MK VIII (Unl)
      case 0x98: d = 0x50; break; // prot_lk3_data == a8 here
      case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!)
      case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a
*/
    default:
      elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc);
      break;
  }

  elprintf(EL_UIO, "prot r8  [%06x]   %02x @%06x", a, d, SekPc);
  return d;
}

static void PicoWrite8_plk3p(u32 a, u32 d)
{
  elprintf(EL_UIO, "prot w8  [%06x]   %02x @%06x", a, d & 0xff, SekPc);
  if (a & 2)
    prot_lk3_cmd = d;
  else
    prot_lk3_data = d;
}

static void PicoWrite8_plk3b(u32 a, u32 d)
{
  int addr;

  elprintf(EL_UIO, "prot w8  [%06x]   %02x @%06x", a, d & 0xff, SekPc);
  addr = d << 15;
  if (addr + 0x8000 > Pico.romsize) {
    elprintf(EL_UIO|EL_ANOMALY, "prot_lk3: bank too large: %02x", d);
    return;
  }
  if (addr == 0)
    memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000);
  else
    memcpy(Pico.rom, Pico.rom + addr, 0x8000);
}

static void carthw_prot_lk3_mem_setup(void)
{
  cpu68k_map_set(m68k_read8_map,   0x600000, 0x7fffff, PicoRead8_plk3, 1);
  cpu68k_map_set(m68k_write8_map,  0x600000, 0x6fffff, PicoWrite8_plk3p, 1);
  cpu68k_map_set(m68k_write8_map,  0x700000, 0x7fffff, PicoWrite8_plk3b, 1);
}

void carthw_prot_lk3_startup(void)
{
  void *tmp;

  elprintf(EL_STATUS, "lk3 prot emu startup");

  // allocate space for bank0 backup
  tmp = realloc(Pico.rom, Pico.romsize + 0x8000);
  if (tmp == NULL)
  {
    elprintf(EL_STATUS, "OOM");
    return;
  }
  Pico.rom = tmp;
  memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000);

  PicoCartMemSetup = carthw_prot_lk3_mem_setup;
}
Commit	Line	Data
a12b1b29	1	/*
000f5335	2	* Support for a few cart mappers and some protection.
65ca3034	3	*
45f2f245	4	* (c) Copyright 2008-2009, Grazvydas "notaz" Ignotas
65ca3034	5	* Free for non-commercial use.
65ca3034	6	*
a12b1b29	7	*/
a12b1b29	8
efcba75f	9	#include "../pico_int.h"
45f2f245	10	#include "../memory.h"
757f8dae	11
a12b1b29	12
000f5335	13	/* The SSFII mapper */
	14	unsigned char ssf2_banks[8];
	15
	16	static carthw_state_chunk carthw_ssf2_state[] =
	17	{
	18	{ CHUNK_CARTHW, sizeof(ssf2_banks), &ssf2_banks },
	19	{ 0, 0, NULL }
	20	};
	21
	22	static void carthw_ssf2_write8(u32 a, u32 d)
	23	{
	24	u32 target, base;
	25
	26	if ((a & 0xfffff0) != 0xa130f0) {
	27	PicoWrite8_io(a, d);
	28	return;
	29	}
	30
	31	a &= 0x0e;
	32	if (a == 0)
	33	return;
	34
	35	ssf2_banks[a >> 1] = d;
	36	base = d << 19;
	37	target = a << 18;
	38	if (base + 0x80000 > Pico.romsize) {
	39	elprintf(EL_ANOMALY\|EL_STATUS, "ssf2: missing bank @ %06x", base);
	40	return;
	41	}
	42
	43	cpu68k_map_set(m68k_read8_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
	44	cpu68k_map_set(m68k_read16_map, target, target + 0x80000 - 1, Pico.rom + base, 0);
	45	}
	46
	47	static void carthw_ssf2_mem_setup(void)
	48	{
	49	cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_ssf2_write8, 1);
	50	}
	51
	52	static void carthw_ssf2_statef(void)
	53	{
	54	int i;
	55	for (i = 1; i < 8; i++)
	56	carthw_ssf2_write8(0xa130f0 \| (i << 1), ssf2_banks[i]);
	57	}
	58
	59	void carthw_ssf2_startup(void)
	60	{
	61	int i;
	62
	63	elprintf(EL_STATUS, "SSF2 mapper startup");
	64
	65	// default map
	66	for (i = 0; i < 8; i++)
	67	ssf2_banks[i] = i;
	68
	69	PicoCartMemSetup = carthw_ssf2_mem_setup;
	70	PicoLoadStateHook = carthw_ssf2_statef;
	71	carthw_chunks = carthw_ssf2_state;
	72	}
	73
	74
45f2f245	75	/* Common *-in-1 pirate mapper.
	76	* Switches banks based on addr lines when /TIME is set.
	77	* TODO: verify
	78	*/
	79	static unsigned int carthw_Xin1_baddr = 0;
757f8dae	80
45f2f245	81	static void carthw_Xin1_do(u32 a, int mask, int shift)
757f8dae	82	{
	83	int len;
	84
45f2f245	85	carthw_Xin1_baddr = a;
	86	a &= mask;
	87	a <<= shift;
757f8dae	88	len = Pico.romsize - a;
757f8dae	89	if (len <= 0) {
45f2f245	90	elprintf(EL_ANOMALY\|EL_STATUS, "X-in-1: missing bank @ %06x", a);
757f8dae	91	return;
	92	}
	93
45f2f245	94	len = (len + M68K_BANK_MASK) & ~M68K_BANK_MASK;
	95	cpu68k_map_set(m68k_read8_map, 0x000000, len - 1, Pico.rom + a, 0);
	96	cpu68k_map_set(m68k_read16_map, 0x000000, len - 1, Pico.rom + a, 0);
757f8dae	97	}
757f8dae	98
45f2f245	99	static carthw_state_chunk carthw_Xin1_state[] =
757f8dae	100	{
45f2f245	101	{ CHUNK_CARTHW, sizeof(carthw_Xin1_baddr), &carthw_Xin1_baddr },
	102	{ 0, 0, NULL }
	103	};
	104
	105	// TODO: test a0, reads, w16
	106	static void carthw_Xin1_write8(u32 a, u32 d)
	107	{
	108	if ((a & 0xffff00) != 0xa13000) {
	109	PicoWrite8_io(a, d);
	110	return;
	111	}
	112
	113	carthw_Xin1_do(a, 0x3f, 16);
757f8dae	114	}
757f8dae	115
45f2f245	116	static void carthw_Xin1_mem_setup(void)
bdec53c9	117	{
45f2f245	118	cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1);
bdec53c9	119	}
bdec53c9	120
45f2f245	121	static void carthw_Xin1_reset(void)
757f8dae	122	{
45f2f245	123	carthw_Xin1_write8(0xa13000, 0);
45f2f245	124	}
757f8dae	125
45f2f245	126	static void carthw_Xin1_statef(void)
	127	{
	128	carthw_Xin1_write8(carthw_Xin1_baddr, 0);
	129	}
757f8dae	130
45f2f245	131	void carthw_Xin1_startup(void)
	132	{
	133	elprintf(EL_STATUS, "X-in-1 mapper startup");
757f8dae	134
45f2f245	135	PicoCartMemSetup = carthw_Xin1_mem_setup;
	136	PicoResetHook = carthw_Xin1_reset;
	137	PicoLoadStateHook = carthw_Xin1_statef;
	138	carthw_chunks = carthw_Xin1_state;
757f8dae	139	}
757f8dae	140
a12b1b29	141
	142	/* Realtec, based on TascoDLX doc
	143	* http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt
	144	*/
	145	static int realtec_bank = 0x80000000, realtec_size = 0x80000000;
a12b1b29	146
45f2f245	147	static void carthw_realtec_write8(u32 a, u32 d)
a12b1b29	148	{
	149	int i, bank_old = realtec_bank, size_old = realtec_size;
	150
	151	if (a == 0x400000)
	152	{
	153	realtec_bank &= 0x0e0000;
	154	realtec_bank \|= 0x300000 & (d << 19);
	155	if (realtec_bank != bank_old)
	156	elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
	157	}
	158	else if (a == 0x402000)
	159	{
	160	realtec_size = (d << 17) & 0x3e0000;
	161	if (realtec_size != size_old)
	162	elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
	163	}
	164	else if (a == 0x404000)
	165	{
	166	realtec_bank &= 0x300000;
	167	realtec_bank \|= 0x0e0000 & (d << 17);
	168	if (realtec_bank != bank_old)
	169	elprintf(EL_ANOMALY, "write [%06x] %02x @ %06x", a, d, SekPc);
	170	}
	171	else
	172	elprintf(EL_ANOMALY, "realtec: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
65ca3034	173
a12b1b29	174	if (realtec_bank >= 0 && realtec_size >= 0 &&
	175	(realtec_bank != bank_old \|\| realtec_size != size_old))
	176	{
	177	elprintf(EL_ANOMALY, "realtec: new bank %06x, size %06x", realtec_bank, realtec_size, SekPc);
45f2f245	178	if (realtec_size > Pico.romsize - realtec_bank)
a12b1b29	179	{
	180	elprintf(EL_ANOMALY, "realtec: bank too large / out of range?");
	181	return;
	182	}
	183
45f2f245	184	for (i = 0; i < 0x400000; i += realtec_size) {
	185	cpu68k_map_set(m68k_read8_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
	186	cpu68k_map_set(m68k_read16_map, i, realtec_size - 1, Pico.rom + realtec_bank, 0);
	187	}
a12b1b29	188	}
	189	}
	190
0b35350d	191	static void carthw_realtec_reset(void)
a12b1b29	192	{
a12b1b29	193	int i;
45f2f245	194
a12b1b29	195	/* map boot code */
45f2f245	196	for (i = 0; i < 0x400000; i += M68K_BANK_SIZE) {
	197	cpu68k_map_set(m68k_read8_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
	198	cpu68k_map_set(m68k_read16_map, i, i + M68K_BANK_SIZE - 1, Pico.rom + Pico.romsize, 0);
	199	}
	200	cpu68k_map_set(m68k_write8_map, 0x400000, 0x400000 + M68K_BANK_SIZE - 1, carthw_realtec_write8, 1);
a12b1b29	201	realtec_bank = realtec_size = 0x80000000;
	202	}
	203
	204	void carthw_realtec_startup(void)
	205	{
	206	void *tmp;
45f2f245	207	int i;
a12b1b29	208
45f2f245	209	elprintf(EL_STATUS, "Realtec mapper startup");
a12b1b29	210
45f2f245	211	// allocate additional bank for boot code
	212	// (we know those ROMs have aligned size)
	213	tmp = realloc(Pico.rom, Pico.romsize + M68K_BANK_SIZE);
a12b1b29	214	if (tmp == NULL)
	215	{
	216	elprintf(EL_STATUS, "OOM");
	217	return;
	218	}
	219	Pico.rom = tmp;
a12b1b29	220
45f2f245	221	// create bank for boot code
	222	for (i = 0; i < M68K_BANK_SIZE; i += 0x2000)
	223	memcpy(Pico.rom + Pico.romsize + i, Pico.rom + Pico.romsize - 0x2000, 0x2000);
	224
a12b1b29	225	PicoResetHook = carthw_realtec_reset;
	226	}
	227
0b35350d	228	/* Radica mapper, based on DevSter's info
0b35350d	229	* http://devster.monkeeh.com/sega/radica/
45f2f245	230	* XXX: mostly the same as X-in-1, merge?
0b35350d	231	*/
45f2f245	232	static u32 carthw_radica_read16(u32 a)
0b35350d	233	{
45f2f245	234	if ((a & 0xffff00) != 0xa13000)
45f2f245	235	return PicoRead16_io(a);
0b35350d	236
45f2f245	237	carthw_Xin1_do(a, 0x7e, 15);
0b35350d	238
	239	return 0;
	240	}
	241
45f2f245	242	static void carthw_radica_mem_setup(void)
	243	{
	244	cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1);
	245	}
	246
0b35350d	247	static void carthw_radica_statef(void)
0b35350d	248	{
45f2f245	249	carthw_radica_read16(carthw_Xin1_baddr);
0b35350d	250	}
	251
	252	static void carthw_radica_reset(void)
	253	{
45f2f245	254	carthw_radica_read16(0xa13000);
0b35350d	255	}
	256
	257	void carthw_radica_startup(void)
	258	{
45f2f245	259	elprintf(EL_STATUS, "Radica mapper startup");
0b35350d	260
45f2f245	261	PicoCartMemSetup = carthw_radica_mem_setup;
45f2f245	262	PicoResetHook = carthw_radica_reset;
0b35350d	263	PicoLoadStateHook = carthw_radica_statef;
45f2f245	264	carthw_chunks = carthw_Xin1_state;
0b35350d	265	}
0b35350d	266
000f5335	267	/* Simple unlicensed ROM protection emulation */
	268	static struct {
	269	u32 addr;
	270	u32 mask;
	271	u16 val;
	272	u16 readonly;
	273	} *sprot_items;
	274	static int sprot_item_alloc;
	275	static int sprot_item_count;
	276
	277	static u16 *carthw_sprot_get_val(u32 a, int rw_only)
	278	{
	279	int i;
	280
	281	for (i = 0; i < sprot_item_count; i++)
	282	if ((a & sprot_items[i].mask) == sprot_items[i].addr)
	283	if (!rw_only \|\| !sprot_items[i].readonly)
	284	return &sprot_items[i].val;
	285	return NULL;
	286	}
	287
	288	static u32 PicoRead8_sprot(u32 a)
	289	{
	290	u16 *val;
	291	u32 d;
	292
	293	if (0xa10000 <= a && a < 0xa12000)
	294	return PicoRead8_io(a);
	295
	296	val = carthw_sprot_get_val(a, 0);
	297	if (val != NULL) {
	298	d = *val;
	299	if (!(a & 1))
	300	d >>= 8;
	301	elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
	302	return d;
	303	}
	304	else {
	305	elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc);
	306	return 0;
	307	}
	308	}
	309
	310	static u32 PicoRead16_sprot(u32 a)
	311	{
	312	u16 *val;
	313
	314	if (0xa10000 <= a && a < 0xa12000)
	315	return PicoRead16_io(a);
	316
	317	val = carthw_sprot_get_val(a, 0);
	318	if (val != NULL) {
	319	elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc);
	320	return *val;
	321	}
	322	else {
	323	elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc);
	324	return 0;
	325	}
	326	}
	327
	328	static void PicoWrite8_sprot(u32 a, u32 d)
	329	{
	330	u16 *val;
331
332	if (0xa10000 <= a && a < 0xa12000) {
333	PicoWrite8_io(a, d);
334	return;
335	}
336
337	val = carthw_sprot_get_val(a, 1);
338	if (val != NULL) {
339	if (a & 1)
340	val = (val & 0xff00) \| (d \| 0xff);
341	else
342	val = (val & 0x00ff) \| (d << 8);
343	elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
344	}
345	else
346	elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc);
347	}
348
349	static void PicoWrite16_sprot(u32 a, u32 d)
350	{
351	u16 *val;
352
353	if (0xa10000 <= a && a < 0xa12000) {
354	PicoWrite16_io(a, d);
355	return;
356	}
357
358	val = carthw_sprot_get_val(a, 1);
359	if (val != NULL) {
360	*val = d;
361	elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
362	}
363	else
364	elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc);
365	}
366
367	void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro)
368	{
369	if (sprot_items == NULL) {
370	sprot_items = calloc(8, sizeof(sprot_items[0]));
371	sprot_item_alloc = 8;
372	sprot_item_count = 0;
373	}
374
375	if (sprot_item_count == sprot_item_alloc) {
376	void *tmp;
377	sprot_item_alloc *= 2;
378	tmp = realloc(sprot_items, sprot_item_alloc);
379	if (tmp == NULL) {
380	elprintf(EL_STATUS, "OOM");
381	return;
382	}
383	sprot_items = tmp;
384	}
385
386	sprot_items[sprot_item_count].addr = a;
387	sprot_items[sprot_item_count].mask = mask;
388	sprot_items[sprot_item_count].val = val;
389	sprot_items[sprot_item_count].readonly = is_ro;
390	sprot_item_count++;
391	}
392
393	static void carthw_sprot_unload(void)
394	{
395	free(sprot_items);
396	sprot_items = NULL;
397	sprot_item_count = sprot_item_alloc = 0;
398	}
399
400	static void carthw_sprot_mem_setup(void)
401	{
402	int start;
403
404	// map ROM - 0x7fffff, /TIME areas (which are tipically used)
405	start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK;
406	cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1);
407	cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1);
408	cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1);
409	cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1);
410
411	cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_sprot, 1);
412	cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_sprot, 1);
413	cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_sprot, 1);
414	cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1);
415	}
416
417	void carthw_sprot_startup(void)
418	{
419	elprintf(EL_STATUS, "Prot emu startup");
420
421	PicoCartMemSetup = carthw_sprot_mem_setup;
422	PicoCartUnloadHook = carthw_sprot_unload;
423	}
424
425	/* Protection emulation for Lion King 3. Credits go to Haze */
426	static u8 prot_lk3_cmd, prot_lk3_data;
427
428	static u32 PicoRead8_plk3(u32 a)
429	{
430	u32 d = 0;
431	switch (prot_lk3_cmd) {
432	case 1: d = prot_lk3_data >> 1; break;
433	case 2: // nibble rotate
434	d = ((prot_lk3_data >> 4) \| (prot_lk3_data << 4)) & 0xff;
435	break;
436	case 3: // bit rotate
437	d = prot_lk3_data;
438	d = (d >> 4) \| (d << 4);
439	d = ((d & 0xcc) >> 2) \| ((d & 0x33) << 2);
440	d = ((d & 0xaa) >> 1) \| ((d & 0x55) << 1);
441	break;
442	/* Top Fighter 2000 MK VIII (Unl)
443	case 0x98: d = 0x50; break; // prot_lk3_data == a8 here
444	case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!)
445	case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a
446	*/
447	default:
448	elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc);
449	break;
450	}
451
452	elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
453	return d;
454	}
455
456	static void PicoWrite8_plk3p(u32 a, u32 d)
457	{
458	elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
459	if (a & 2)
460	prot_lk3_cmd = d;
461	else
462	prot_lk3_data = d;
463	}
464
465	static void PicoWrite8_plk3b(u32 a, u32 d)
466	{
467	int addr;
468
469	elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
470	addr = d << 15;
471	if (addr + 0x8000 > Pico.romsize) {
472	elprintf(EL_UIO\|EL_ANOMALY, "prot_lk3: bank too large: %02x", d);
473	return;
474	}
475	if (addr == 0)
476	memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000);
477	else
478	memcpy(Pico.rom, Pico.rom + addr, 0x8000);
479	}
480
481	static void carthw_prot_lk3_mem_setup(void)
482	{
483	cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1);
484	cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1);
485	cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1);
486	}
487
488	void carthw_prot_lk3_startup(void)
489	{
490	void *tmp;
491
492	elprintf(EL_STATUS, "lk3 prot emu startup");
493
494	// allocate space for bank0 backup
495	tmp = realloc(Pico.rom, Pico.romsize + 0x8000);
496	if (tmp == NULL)
497	{
498	elprintf(EL_STATUS, "OOM");
499	return;
500	}
501	Pico.rom = tmp;
502	memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000);
503
504	PicoCartMemSetup = carthw_prot_lk3_mem_setup;
505	}
506