[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)
{
	int i;

	elprintf(EL_STATUS, "Realtec mapper startup");

	// allocate additional bank for boot code
	// (we know those ROMs have aligned size)
	i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE);
	if (i != 0) {
		elprintf(EL_STATUS, "OOM");
		return;
	}

	// 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)
{
  int ret;

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

  // allocate space for bank0 backup
  ret = PicoCartResize(Pico.romsize + 0x8000);
  if (ret != 0) {
    elprintf(EL_STATUS, "OOM");
    return;
  }
  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	{
45f2f245	206	int i;
a12b1b29	207
45f2f245	208	elprintf(EL_STATUS, "Realtec mapper startup");
a12b1b29	209
45f2f245	210	// allocate additional bank for boot code
45f2f245	211	// (we know those ROMs have aligned size)
a736af3e	212	i = PicoCartResize(Pico.romsize + M68K_BANK_SIZE);
a736af3e	213	if (i != 0) {
a12b1b29	214	elprintf(EL_STATUS, "OOM");
	215	return;
	216	}
a12b1b29	217
45f2f245	218	// create bank for boot code
	219	for (i = 0; i < M68K_BANK_SIZE; i += 0x2000)
	220	memcpy(Pico.rom + Pico.romsize + i, Pico.rom + Pico.romsize - 0x2000, 0x2000);
	221
a12b1b29	222	PicoResetHook = carthw_realtec_reset;
	223	}
	224
0b35350d	225	/* Radica mapper, based on DevSter's info
0b35350d	226	* http://devster.monkeeh.com/sega/radica/
45f2f245	227	* XXX: mostly the same as X-in-1, merge?
0b35350d	228	*/
45f2f245	229	static u32 carthw_radica_read16(u32 a)
0b35350d	230	{
45f2f245	231	if ((a & 0xffff00) != 0xa13000)
45f2f245	232	return PicoRead16_io(a);
0b35350d	233
45f2f245	234	carthw_Xin1_do(a, 0x7e, 15);
0b35350d	235
	236	return 0;
	237	}
	238
45f2f245	239	static void carthw_radica_mem_setup(void)
	240	{
	241	cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, carthw_radica_read16, 1);
	242	}
	243
0b35350d	244	static void carthw_radica_statef(void)
0b35350d	245	{
45f2f245	246	carthw_radica_read16(carthw_Xin1_baddr);
0b35350d	247	}
	248
	249	static void carthw_radica_reset(void)
	250	{
45f2f245	251	carthw_radica_read16(0xa13000);
0b35350d	252	}
	253
	254	void carthw_radica_startup(void)
	255	{
45f2f245	256	elprintf(EL_STATUS, "Radica mapper startup");
0b35350d	257
45f2f245	258	PicoCartMemSetup = carthw_radica_mem_setup;
45f2f245	259	PicoResetHook = carthw_radica_reset;
0b35350d	260	PicoLoadStateHook = carthw_radica_statef;
45f2f245	261	carthw_chunks = carthw_Xin1_state;
0b35350d	262	}
0b35350d	263
000f5335	264	/* Simple unlicensed ROM protection emulation */
	265	static struct {
	266	u32 addr;
	267	u32 mask;
	268	u16 val;
	269	u16 readonly;
	270	} *sprot_items;
	271	static int sprot_item_alloc;
	272	static int sprot_item_count;
	273
	274	static u16 *carthw_sprot_get_val(u32 a, int rw_only)
	275	{
	276	int i;
	277
	278	for (i = 0; i < sprot_item_count; i++)
	279	if ((a & sprot_items[i].mask) == sprot_items[i].addr)
	280	if (!rw_only \|\| !sprot_items[i].readonly)
	281	return &sprot_items[i].val;
	282	return NULL;
	283	}
	284
	285	static u32 PicoRead8_sprot(u32 a)
	286	{
	287	u16 *val;
	288	u32 d;
	289
	290	if (0xa10000 <= a && a < 0xa12000)
	291	return PicoRead8_io(a);
	292
	293	val = carthw_sprot_get_val(a, 0);
	294	if (val != NULL) {
	295	d = *val;
	296	if (!(a & 1))
	297	d >>= 8;
	298	elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
	299	return d;
	300	}
	301	else {
	302	elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc);
	303	return 0;
	304	}
	305	}
	306
	307	static u32 PicoRead16_sprot(u32 a)
	308	{
	309	u16 *val;
	310
	311	if (0xa10000 <= a && a < 0xa12000)
	312	return PicoRead16_io(a);
	313
	314	val = carthw_sprot_get_val(a, 0);
	315	if (val != NULL) {
	316	elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc);
	317	return *val;
	318	}
	319	else {
	320	elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc);
	321	return 0;
	322	}
	323	}
	324
	325	static void PicoWrite8_sprot(u32 a, u32 d)
	326	{
	327	u16 *val;
328
329	if (0xa10000 <= a && a < 0xa12000) {
330	PicoWrite8_io(a, d);
331	return;
332	}
333
334	val = carthw_sprot_get_val(a, 1);
335	if (val != NULL) {
336	if (a & 1)
337	val = (val & 0xff00) \| (d \| 0xff);
338	else
339	val = (val & 0x00ff) \| (d << 8);
340	elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
341	}
342	else
343	elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc);
344	}
345
346	static void PicoWrite16_sprot(u32 a, u32 d)
347	{
348	u16 *val;
349
350	if (0xa10000 <= a && a < 0xa12000) {
351	PicoWrite16_io(a, d);
352	return;
353	}
354
355	val = carthw_sprot_get_val(a, 1);
356	if (val != NULL) {
357	*val = d;
358	elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
359	}
360	else
361	elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc);
362	}
363
364	void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro)
365	{
366	if (sprot_items == NULL) {
367	sprot_items = calloc(8, sizeof(sprot_items[0]));
368	sprot_item_alloc = 8;
369	sprot_item_count = 0;
370	}
371
372	if (sprot_item_count == sprot_item_alloc) {
373	void *tmp;
374	sprot_item_alloc *= 2;
375	tmp = realloc(sprot_items, sprot_item_alloc);
376	if (tmp == NULL) {
377	elprintf(EL_STATUS, "OOM");
378	return;
379	}
380	sprot_items = tmp;
381	}
382
383	sprot_items[sprot_item_count].addr = a;
384	sprot_items[sprot_item_count].mask = mask;
385	sprot_items[sprot_item_count].val = val;
386	sprot_items[sprot_item_count].readonly = is_ro;
387	sprot_item_count++;
388	}
389
390	static void carthw_sprot_unload(void)
391	{
392	free(sprot_items);
393	sprot_items = NULL;
394	sprot_item_count = sprot_item_alloc = 0;
395	}
396
397	static void carthw_sprot_mem_setup(void)
398	{
399	int start;
400
401	// map ROM - 0x7fffff, /TIME areas (which are tipically used)
402	start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK;
403	cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1);
404	cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1);
405	cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1);
406	cpu68k_map_set(m68k_write16_map, start, 0x7fffff, PicoWrite16_sprot, 1);
407
408	cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_sprot, 1);
409	cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_sprot, 1);
410	cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_sprot, 1);
411	cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_sprot, 1);
412	}
413
414	void carthw_sprot_startup(void)
415	{
416	elprintf(EL_STATUS, "Prot emu startup");
417
418	PicoCartMemSetup = carthw_sprot_mem_setup;
419	PicoCartUnloadHook = carthw_sprot_unload;
420	}
421
422	/* Protection emulation for Lion King 3. Credits go to Haze */
423	static u8 prot_lk3_cmd, prot_lk3_data;
424
425	static u32 PicoRead8_plk3(u32 a)
426	{
427	u32 d = 0;
428	switch (prot_lk3_cmd) {
429	case 1: d = prot_lk3_data >> 1; break;
430	case 2: // nibble rotate
431	d = ((prot_lk3_data >> 4) \| (prot_lk3_data << 4)) & 0xff;
432	break;
433	case 3: // bit rotate
434	d = prot_lk3_data;
435	d = (d >> 4) \| (d << 4);
436	d = ((d & 0xcc) >> 2) \| ((d & 0x33) << 2);
437	d = ((d & 0xaa) >> 1) \| ((d & 0x55) << 1);
438	break;
439	/* Top Fighter 2000 MK VIII (Unl)
440	case 0x98: d = 0x50; break; // prot_lk3_data == a8 here
441	case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!)
442	case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a
443	*/
444	default:
445	elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc);
446	break;
447	}
448
449	elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
450	return d;
451	}
452
453	static void PicoWrite8_plk3p(u32 a, u32 d)
454	{
455	elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
456	if (a & 2)
457	prot_lk3_cmd = d;
458	else
459	prot_lk3_data = d;
460	}
461
462	static void PicoWrite8_plk3b(u32 a, u32 d)
463	{
464	int addr;
465
466	elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
467	addr = d << 15;
468	if (addr + 0x8000 > Pico.romsize) {
469	elprintf(EL_UIO\|EL_ANOMALY, "prot_lk3: bank too large: %02x", d);
470	return;
471	}
472	if (addr == 0)
473	memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000);
474	else
475	memcpy(Pico.rom, Pico.rom + addr, 0x8000);
476	}
477
478	static void carthw_prot_lk3_mem_setup(void)
479	{
480	cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1);
481	cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1);
482	cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1);
483	}
484
485	void carthw_prot_lk3_startup(void)
486	{
a736af3e	487	int ret;
000f5335	488
	489	elprintf(EL_STATUS, "lk3 prot emu startup");
	490
	491	// allocate space for bank0 backup
a736af3e	492	ret = PicoCartResize(Pico.romsize + 0x8000);
a736af3e	493	if (ret != 0) {
000f5335	494	elprintf(EL_STATUS, "OOM");
	495	return;
	496	}
000f5335	497	memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000);
	498
	499	PicoCartMemSetup = carthw_prot_lk3_mem_setup;
	500	}
	501