mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
md, reworked cart protection handling, added some unlicensed
This commit is contained in:
kub
parent
27b26d0478
commit
e1e8ca17be
6 changed files with 625 additions and 195 deletions
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@ -731,10 +731,15 @@ static struct {
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u32 mask;
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u16 val;
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u16 readonly;
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} *sprot_items;
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static int sprot_item_alloc;
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} sprot_items[8];
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static int sprot_item_count;
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static carthw_state_chunk carthw_sprot_state[] =
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{
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{ CHUNK_CARTHW, sizeof(sprot_items), &sprot_items },
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{ 0, 0, NULL }
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};
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static u16 *carthw_sprot_get_val(u32 a, int rw_only)
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{
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int i;
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@ -752,9 +757,6 @@ static u32 PicoRead8_sprot(u32 a)
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u16 *val;
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u32 d;
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if (0xa10000 <= a && a < 0xa12000)
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return PicoRead8_io(a);
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val = carthw_sprot_get_val(a, 0);
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if (val != NULL) {
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d = *val;
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@ -763,39 +765,33 @@ static u32 PicoRead8_sprot(u32 a)
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elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
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return d;
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}
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else {
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elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc);
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return 0;
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}
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else if (0xa10000 <= a && a <= 0xa1ffff)
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return PicoRead8_io(a);
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elprintf(EL_UIO, "prot r8 [%06x] MISS @%06x", a, SekPc);
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return 0;
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}
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static u32 PicoRead16_sprot(u32 a)
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{
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u16 *val;
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if (0xa10000 <= a && a < 0xa12000)
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return PicoRead16_io(a);
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val = carthw_sprot_get_val(a, 0);
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if (val != NULL) {
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elprintf(EL_UIO, "prot r16 [%06x] %04x @%06x", a, *val, SekPc);
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return *val;
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}
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else {
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elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc);
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return 0;
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}
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else if (0xa10000 <= a && a <= 0xa1ffff)
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return PicoRead16_io(a);
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elprintf(EL_UIO, "prot r16 [%06x] MISS @%06x", a, SekPc);
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return 0;
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}
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static void PicoWrite8_sprot(u32 a, u32 d)
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{
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u16 *val;
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if (0xa10000 <= a && a < 0xa12000) {
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PicoWrite8_io(a, d);
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return;
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}
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val = carthw_sprot_get_val(a, 1);
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if (val != NULL) {
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if (a & 1)
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@ -804,45 +800,33 @@ static void PicoWrite8_sprot(u32 a, u32 d)
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*val = (*val & 0x00ff) | (d << 8);
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elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
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}
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else
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elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc);
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else if (0xa10000 <= a && a <= 0xa1ffff)
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return PicoWrite8_io(a, d);
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elprintf(EL_UIO, "prot w8 [%06x] %02x MISS @%06x", a, d & 0xff, SekPc);
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}
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static void PicoWrite16_sprot(u32 a, u32 d)
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{
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u16 *val;
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if (0xa10000 <= a && a < 0xa12000) {
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PicoWrite16_io(a, d);
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return;
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}
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val = carthw_sprot_get_val(a, 1);
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if (val != NULL) {
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*val = d;
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elprintf(EL_UIO, "prot w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc);
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}
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else
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elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc);
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else if (0xa10000 <= a && a <= 0xa1ffff)
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return PicoWrite16_io(a, d);
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elprintf(EL_UIO, "prot w16 [%06x] %04x MISS @%06x", a, d & 0xffff, SekPc);
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}
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void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short val, int is_ro)
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{
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if (sprot_items == NULL) {
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sprot_items = calloc(8, sizeof(sprot_items[0]));
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sprot_item_alloc = 8;
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sprot_item_count = 0;
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}
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if (sprot_item_count == sprot_item_alloc) {
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void *tmp;
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sprot_item_alloc *= 2;
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tmp = realloc(sprot_items, sprot_item_alloc);
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if (tmp == NULL) {
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elprintf(EL_STATUS, "OOM");
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return;
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}
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sprot_items = tmp;
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int sprot_elems = sizeof(sprot_items)/sizeof(sprot_items[0]);
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if (sprot_item_count == sprot_elems) {
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elprintf(EL_STATUS, "too many sprot items");
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return;
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}
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sprot_items[sprot_item_count].addr = a;
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@ -854,17 +838,17 @@ void carthw_sprot_new_location(unsigned int a, unsigned int mask, unsigned short
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static void carthw_sprot_unload(void)
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{
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free(sprot_items);
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sprot_items = NULL;
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sprot_item_count = sprot_item_alloc = 0;
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sprot_item_count = 0;
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}
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static void carthw_sprot_mem_setup(void)
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{
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int start;
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// map ROM - 0x7fffff, /TIME areas (which are tipically used)
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// map 0x400000 - 0x7fffff, /TIME areas (which are tipically used)
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start = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK;
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if (start < 0x400000) start = 0x400000;
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cpu68k_map_set(m68k_read8_map, start, 0x7fffff, PicoRead8_sprot, 1);
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cpu68k_map_set(m68k_read16_map, start, 0x7fffff, PicoRead16_sprot, 1);
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cpu68k_map_set(m68k_write8_map, start, 0x7fffff, PicoWrite8_sprot, 1);
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@ -882,32 +866,41 @@ void carthw_sprot_startup(void)
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PicoCartMemSetup = carthw_sprot_mem_setup;
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PicoCartUnloadHook = carthw_sprot_unload;
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carthw_chunks = carthw_sprot_state;
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}
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/* Protection emulation for Lion King 3. Credits go to Haze */
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static u8 prot_lk3_cmd, prot_lk3_data;
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static struct {
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u32 bank;
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u8 cmd, data;
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} carthw_lk3_regs;
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static carthw_state_chunk carthw_lk3_state[] =
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{
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{ CHUNK_CARTHW, sizeof(carthw_lk3_regs), &carthw_lk3_regs },
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{ 0, 0, NULL }
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};
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static u8 *carthw_lk3_mem; // shadow copy memory
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static u32 carthw_lk3_madr[0x100000/M68K_BANK_SIZE];
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static u32 PicoRead8_plk3(u32 a)
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{
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u32 d = 0;
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switch (prot_lk3_cmd) {
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case 1: d = prot_lk3_data >> 1; break;
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switch (carthw_lk3_regs.cmd) {
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case 0: d = carthw_lk3_regs.data << 1; break;
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case 1: d = carthw_lk3_regs.data >> 1; break;
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case 2: // nibble rotate
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d = ((prot_lk3_data >> 4) | (prot_lk3_data << 4)) & 0xff;
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d = ((carthw_lk3_regs.data >> 4) | (carthw_lk3_regs.data << 4)) & 0xff;
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break;
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case 3: // bit rotate
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d = prot_lk3_data;
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d = carthw_lk3_regs.data;
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d = (d >> 4) | (d << 4);
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d = ((d & 0xcc) >> 2) | ((d & 0x33) << 2);
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d = ((d & 0xaa) >> 1) | ((d & 0x55) << 1);
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break;
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/* Top Fighter 2000 MK VIII (Unl)
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case 0x98: d = 0x50; break; // prot_lk3_data == a8 here
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case 0x67: d = 0xde; break; // prot_lk3_data == 7b here (rot!)
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case 0xb5: d = 0x9f; break; // prot_lk3_data == 4a
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*/
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default:
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elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", prot_lk3_cmd, SekPc);
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elprintf(EL_UIO, "unhandled prot cmd %02x @%06x", carthw_lk3_regs.cmd, SekPc);
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break;
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}
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@ -919,49 +912,207 @@ static void PicoWrite8_plk3p(u32 a, u32 d)
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{
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elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
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if (a & 2)
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prot_lk3_cmd = d;
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carthw_lk3_regs.cmd = d & 0x3;
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else
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prot_lk3_data = d;
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carthw_lk3_regs.data = d;
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}
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static void PicoWrite8_plk3b(u32 a, u32 d)
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{
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int addr;
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u32 addr;
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elprintf(EL_UIO, "prot w8 [%06x] %02x @%06x", a, d & 0xff, SekPc);
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addr = d << 15;
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if (addr + 0x8000 > Pico.romsize) {
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elprintf(EL_UIO|EL_ANOMALY, "prot_lk3: bank too large: %02x", d);
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if (addr+0x10000 >= Pico.romsize) {
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elprintf(EL_UIO|EL_ANOMALY, "lk3_mapper: bank too large: %02x", d);
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return;
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}
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if (addr == 0)
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memcpy(Pico.rom, Pico.rom + Pico.romsize, 0x8000);
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else
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memcpy(Pico.rom, Pico.rom + addr, 0x8000);
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if (addr != carthw_lk3_regs.bank) {
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// banking is by or'ing the bank address in the 1st megabyte, not adding.
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// only do linear mapping if map addresses aren't overlapping bank address
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u32 len = M68K_BANK_SIZE;
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u32 a, b;
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for (b = 0x000000; b < 0x0100000; b += len) {
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if (!((b + (len-1)) & addr)) {
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cpu68k_map_set(m68k_read8_map, b, b + (len-1), Pico.rom+addr + b, 0);
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cpu68k_map_set(m68k_read16_map, b, b + (len-1), Pico.rom+addr + b, 0);
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} else {
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// overlap. ugh, need a shadow copy since banks can contain code and
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// 68K cpu emulator cores need mapped access to code memory
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if (carthw_lk3_madr[b/len] != addr) // only if shadow isn't the same
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for (a = b; a < b+M68K_BANK_SIZE; a += 0x8000)
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memcpy(carthw_lk3_mem + a, Pico.rom + (addr|a), 0x8000);
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carthw_lk3_madr[b/len] = addr;
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cpu68k_map_set(m68k_read8_map, b, b + (len-1), carthw_lk3_mem + b, 0);
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cpu68k_map_set(m68k_read16_map, b, b + (len-1), carthw_lk3_mem + b, 0);
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}
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}
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}
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carthw_lk3_regs.bank = addr;
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}
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static void carthw_prot_lk3_mem_setup(void)
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static void carthw_lk3_mem_setup(void)
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{
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cpu68k_map_set(m68k_read8_map, 0x600000, 0x7fffff, PicoRead8_plk3, 1);
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cpu68k_map_set(m68k_write8_map, 0x600000, 0x6fffff, PicoWrite8_plk3p, 1);
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cpu68k_map_set(m68k_write8_map, 0x700000, 0x7fffff, PicoWrite8_plk3b, 1);
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carthw_lk3_regs.bank = 0;
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}
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void carthw_prot_lk3_startup(void)
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static void carthw_lk3_statef(void)
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{
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int ret;
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PicoWrite8_plk3b(0x700000, carthw_lk3_regs.bank >> 15);
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}
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static void carthw_lk3_unload(void)
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{
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free(carthw_lk3_mem);
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carthw_lk3_mem = NULL;
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memset(carthw_lk3_madr, 0, sizeof(carthw_lk3_madr));
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}
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void carthw_lk3_startup(void)
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{
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elprintf(EL_STATUS, "lk3 prot emu startup");
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// allocate space for bank0 backup
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ret = PicoCartResize(Pico.romsize + 0x8000);
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if (ret != 0) {
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// allocate space for shadow copy
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if (carthw_lk3_mem == NULL)
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carthw_lk3_mem = malloc(0x100000);
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if (carthw_lk3_mem == NULL) {
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elprintf(EL_STATUS, "OOM");
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return;
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}
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memcpy(Pico.rom + Pico.romsize, Pico.rom, 0x8000);
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PicoCartMemSetup = carthw_prot_lk3_mem_setup;
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PicoCartMemSetup = carthw_lk3_mem_setup;
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PicoLoadStateHook = carthw_lk3_statef;
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PicoCartUnloadHook = carthw_lk3_unload;
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carthw_chunks = carthw_lk3_state;
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}
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/* SMW64 mapper, based on mame source */
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static struct {
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u32 bank60, bank61;
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u16 data[8], ctrl[4];
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} carthw_smw64_regs;
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static carthw_state_chunk carthw_smw64_state[] =
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{
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{ CHUNK_CARTHW, sizeof(carthw_smw64_regs), &carthw_smw64_regs },
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{ 0, 0, NULL }
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};
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static u32 PicoRead8_smw64(u32 a)
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{
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u16 *data = carthw_smw64_regs.data, *ctrl = carthw_smw64_regs.ctrl;
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u32 d = 0;
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if (a & 1) {
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if (a>>16 == 0x66) switch ((a>>1) & 7) {
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case 0: d = carthw_smw64_regs.data[0] ; break;
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case 1: d = carthw_smw64_regs.data[0]+1; break;
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case 2: d = carthw_smw64_regs.data[1] ; break;
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case 3: d = carthw_smw64_regs.data[1]+1; break;
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case 4: d = carthw_smw64_regs.data[2] ; break;
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case 5: d = carthw_smw64_regs.data[2]+1; break;
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case 6: d = carthw_smw64_regs.data[2]+2; break;
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case 7: d = carthw_smw64_regs.data[2]+3; break;
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} else /*0x67*/ { // :-O
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if (ctrl[1] & 0x80)
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d = ctrl[2] & 0x40 ? data[4]&data[5] : data[4]^0xff;
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if (a & 2)
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d &= 0x7f;
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else if (ctrl[2] & 0x80) {
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if (ctrl[2] & 0x20)
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data[2] = (data[5] << 2) & 0xfc;
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else
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data[0] = ((data[4] << 1) ^ data[3]) & 0xfe;
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}
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}
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}
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elprintf(EL_UIO, "prot r8 [%06x] %02x @%06x", a, d, SekPc);
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return d;
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}
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static u32 PicoRead16_smw64(u32 a)
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{
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return PicoRead8_smw64(a+1);
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}
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static void PicoWrite8_smw64(u32 a, u32 d)
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{
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u16 *data = carthw_smw64_regs.data, *ctrl = carthw_smw64_regs.ctrl;
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if ((a & 3) == 1) {
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switch (a >> 16) {
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case 0x60: ctrl[0] = d; break;
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case 0x64: data[4] = d; break;
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case 0x67:
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if (ctrl[1] & 0x80) {
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carthw_smw64_regs.bank60 = 0x80000 + ((d<<14) & 0x70000);
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cpu68k_map_set(m68k_read8_map, 0x600000, 0x60ffff, Pico.rom + carthw_smw64_regs.bank60, 0);
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cpu68k_map_set(m68k_read16_map, 0x600000, 0x60ffff, Pico.rom + carthw_smw64_regs.bank60, 0);
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}
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ctrl[2] = d;
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}
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} else if ((a & 3) == 3) {
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switch (a >> 16) {
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case 0x61: ctrl[1] = d; break;
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case 0x64: data[5] = d; break;
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case 0x60:
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switch (ctrl[0] & 7) { // :-O
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case 0: data[0] = (data[0]^data[3] ^ d) & 0xfe; break;
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case 1: data[1] = ( d) & 0xfe; break;
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case 7:
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carthw_smw64_regs.bank61 = 0x80000 + ((d<<14) & 0x70000);
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cpu68k_map_set(m68k_read8_map, 0x610000, 0x61ffff, Pico.rom + carthw_smw64_regs.bank61, 0);
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cpu68k_map_set(m68k_read16_map, 0x610000, 0x61ffff, Pico.rom + carthw_smw64_regs.bank61, 0);
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break;
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}
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data[3] = d;
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}
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}
|
||||
}
|
||||
|
||||
static void PicoWrite16_smw64(u32 a, u32 d)
|
||||
{
|
||||
PicoWrite8_smw64(a+1, d);
|
||||
}
|
||||
|
||||
static void carthw_smw64_mem_setup(void)
|
||||
{
|
||||
// 1st 512 KB mirrored
|
||||
cpu68k_map_set(m68k_read8_map, 0x080000, 0x0fffff, Pico.rom, 0);
|
||||
cpu68k_map_set(m68k_read16_map, 0x080000, 0x0fffff, Pico.rom, 0);
|
||||
|
||||
cpu68k_map_set(m68k_read8_map, 0x660000, 0x67ffff, PicoRead8_smw64, 1);
|
||||
cpu68k_map_set(m68k_read16_map, 0x660000, 0x67ffff, PicoRead16_smw64, 1);
|
||||
cpu68k_map_set(m68k_write8_map, 0x600000, 0x67ffff, PicoWrite8_smw64, 1);
|
||||
cpu68k_map_set(m68k_write16_map, 0x600000, 0x67ffff, PicoWrite16_smw64, 1);
|
||||
}
|
||||
|
||||
static void carthw_smw64_statef(void)
|
||||
{
|
||||
cpu68k_map_set(m68k_read8_map, 0x600000, 0x60ffff, Pico.rom + carthw_smw64_regs.bank60, 0);
|
||||
cpu68k_map_set(m68k_read16_map, 0x600000, 0x60ffff, Pico.rom + carthw_smw64_regs.bank60, 0);
|
||||
cpu68k_map_set(m68k_read8_map, 0x610000, 0x61ffff, Pico.rom + carthw_smw64_regs.bank61, 0);
|
||||
cpu68k_map_set(m68k_read16_map, 0x610000, 0x61ffff, Pico.rom + carthw_smw64_regs.bank61, 0);
|
||||
}
|
||||
|
||||
static void carthw_smw64_reset(void)
|
||||
{
|
||||
memset(&carthw_smw64_regs, 0, sizeof(carthw_smw64_regs));
|
||||
}
|
||||
|
||||
void carthw_smw64_startup(void)
|
||||
{
|
||||
elprintf(EL_STATUS, "SMW64 mapper startup");
|
||||
|
||||
PicoCartMemSetup = carthw_smw64_mem_setup;
|
||||
PicoResetHook = carthw_smw64_reset;
|
||||
PicoLoadStateHook = carthw_smw64_statef;
|
||||
carthw_chunks = carthw_smw64_state;
|
||||
}
|
||||
|
||||
// vim:ts=2:sw=2:expandtab
|
||||
|
|
|
|||
|
|
@ -34,4 +34,5 @@ void carthw_sprot_startup(void);
|
|||
void carthw_sprot_new_location(unsigned int a,
|
||||
unsigned int mask, unsigned short val, int is_ro);
|
||||
|
||||
void carthw_prot_lk3_startup(void);
|
||||
void carthw_lk3_startup(void);
|
||||
void carthw_smw64_startup(void);
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue