/*
* Support for a few cart mappers.
*
- * (c) Copyright 2008, Grazvydas "notaz" Ignotas
+ * (c) Copyright 2008-2009, Grazvydas "notaz" Ignotas
* Free for non-commercial use.
*
- *
- * I should better do some pointer stuff here. But as none of these bankswitch
- * while the game runs, memcpy will suffice.
*/
#include "../pico_int.h"
+#include "../memory.h"
-/* 12-in-1 and 4-in-1. Assuming >= 2MB ROMs here. */
-static unsigned int carthw_12in1_baddr = 0;
-
-static carthw_state_chunk carthw_12in1_state[] =
-{
- { CHUNK_CARTHW, sizeof(carthw_12in1_baddr), &carthw_12in1_baddr },
- { 0, 0, NULL }
-};
-
-static unsigned int carthw_12in1_read16(unsigned int a, int realsize)
-{
- // ??
- elprintf(EL_UIO, "12-in-1: read [%06x] @ %06x", a, SekPc);
- return 0;
-}
+/* 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_12in1_write8(unsigned int a, unsigned int d, int realsize)
+static void carthw_Xin1_do(u32 a, int mask, int shift)
{
int len;
- if (a < 0xA13000 || a >= 0xA13040) {
- /* 4-in-1 has Real Deal Boxing, which uses serial eeprom,
- * but I really doubt that pirate cart had it */
- if (a != 0x200001)
- elprintf(EL_ANOMALY, "12-in-1: unexpected write [%06x] %02x @ %06x", a, d, SekPc);
- return;
- }
-
- carthw_12in1_baddr = a;
- a &= 0x3f; a <<= 16;
+ carthw_Xin1_baddr = a;
+ a &= mask;
+ a <<= shift;
len = Pico.romsize - a;
if (len <= 0) {
- elprintf(EL_ANOMALY|EL_STATUS, "12-in-1: missing bank @ %06x", a);
+ elprintf(EL_ANOMALY|EL_STATUS, "X-in-1: missing bank @ %06x", a);
return;
}
- memcpy(Pico.rom, Pico.rom + Pico.romsize + a, len);
+ 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 void carthw_12in1_reset(void)
+static carthw_state_chunk carthw_Xin1_state[] =
{
- carthw_12in1_write8(0xA13000, 0, 0);
+ { 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_12in1_statef(void)
+static void carthw_Xin1_mem_setup(void)
{
- carthw_12in1_write8(carthw_12in1_baddr, 0, 0);
+ cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1);
}
-void carthw_12in1_startup(void)
+static void carthw_Xin1_reset(void)
{
- void *tmp;
+ carthw_Xin1_write8(0xa13000, 0);
+}
- elprintf(EL_STATUS, "12-in-1 mapper detected");
+static void carthw_Xin1_statef(void)
+{
+ carthw_Xin1_write8(carthw_Xin1_baddr, 0);
+}
- tmp = realloc(Pico.rom, Pico.romsize * 2);
- if (tmp == NULL)
- {
- elprintf(EL_STATUS, "OOM");
- return;
- }
- Pico.rom = tmp;
- memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize);
+void carthw_Xin1_startup(void)
+{
+ elprintf(EL_STATUS, "X-in-1 mapper startup");
- PicoRead16Hook = carthw_12in1_read16;
- PicoWrite8Hook = carthw_12in1_write8;
- PicoResetHook = carthw_12in1_reset;
- PicoLoadStateHook = carthw_12in1_statef;
- carthw_chunks = carthw_12in1_state;
+ PicoCartMemSetup = carthw_Xin1_mem_setup;
+ PicoResetHook = carthw_Xin1_reset;
+ PicoLoadStateHook = carthw_Xin1_statef;
+ carthw_chunks = carthw_Xin1_state;
}
* http://www.sharemation.com/TascoDLX/REALTEC%20Cart%20Mapper%20-%20description%20v1.txt
*/
static int realtec_bank = 0x80000000, realtec_size = 0x80000000;
-static int realtec_romsize = 0;
-static void carthw_realtec_write8(unsigned int a, unsigned int d, int realsize)
+static void carthw_realtec_write8(u32 a, u32 d)
{
int i, bank_old = realtec_bank, size_old = realtec_size;
(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 > realtec_romsize - realtec_bank || realtec_bank >= realtec_romsize)
+ 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)
- memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_bank, realtec_size);
+ 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 += 0x2000)
- memcpy(Pico.rom + i, Pico.rom + 0x400000 + realtec_romsize - 0x2000, 0x2000);
+ 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 detected");
+ elprintf(EL_STATUS, "Realtec mapper startup");
- realtec_romsize = Pico.romsize;
- Pico.romsize = 0x400000;
- tmp = realloc(Pico.rom, 0x400000 + realtec_romsize);
+ // 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;
- memcpy(Pico.rom + 0x400000, Pico.rom, realtec_romsize);
- PicoWrite8Hook = carthw_realtec_write8;
+ // 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 unsigned int carthw_radica_baddr = 0;
-
-static carthw_state_chunk carthw_radica_state[] =
-{
- { CHUNK_CARTHW, sizeof(carthw_radica_baddr), &carthw_radica_baddr },
- { 0, 0, NULL }
-};
-
-static unsigned int carthw_radica_read16(unsigned int a, int realsize)
+static u32 carthw_radica_read16(u32 a)
{
- if ((a & 0xffff80) != 0xa13000) {
- elprintf(EL_UIO, "radica: r16 %06x", a);
- return 0;
- }
+ if ((a & 0xffff00) != 0xa13000)
+ return PicoRead16_io(a);
- carthw_radica_baddr = a;
- a = (a & 0x7e) << 15;
- if (a >= Pico.romsize) {
- elprintf(EL_ANOMALY|EL_STATUS, "radica: missing bank @ %06x", a);
- return 0;
- }
- memcpy(Pico.rom, Pico.rom + Pico.romsize + a, Pico.romsize - 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_radica_baddr, 0);
+ carthw_radica_read16(carthw_Xin1_baddr);
}
static void carthw_radica_reset(void)
{
- memcpy(Pico.rom, Pico.rom + Pico.romsize, Pico.romsize);
+ carthw_radica_read16(0xa13000);
}
void carthw_radica_startup(void)
{
- void *tmp;
+ elprintf(EL_STATUS, "Radica mapper startup");
- elprintf(EL_STATUS, "Radica mapper detected");
-
- tmp = realloc(Pico.rom, Pico.romsize * 2);
- if (tmp == NULL)
- {
- elprintf(EL_STATUS, "OOM");
- return;
- }
- Pico.rom = tmp;
- memcpy(Pico.rom + Pico.romsize, Pico.rom, Pico.romsize);
-
- PicoRead16Hook = carthw_radica_read16;
- PicoResetHook = carthw_radica_reset;
+ PicoCartMemSetup = carthw_radica_mem_setup;
+ PicoResetHook = carthw_radica_reset;
PicoLoadStateHook = carthw_radica_statef;
- carthw_chunks = carthw_radica_state;
+ carthw_chunks = carthw_Xin1_state;
}
-
notaz.gp2x.de / picodrive.git / blobdiff