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Merge pull request #767 from negativeExponent/add_m451_m471
Add mappers 451 and 471
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,216 @@ | ||
| /* FCE Ultra - NES/Famicom Emulator | ||
| * | ||
| * Copyright notice for this file: | ||
| * Copyright (C) 2024 negativeExponent | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| */ | ||
|
|
||
| /* NES 2.0 Mapper 451 is used for the homebrew game Haratyler HP/MP. It is | ||
| * basically a homebrew TLROM-like circuit board that implements the MMC3 | ||
| * register's in an unusual fashion, and saves the high score to flash ROM */ | ||
|
|
||
| #include "mapinc.h" | ||
| #include "mmc3.h" | ||
| #include "../ines.h" | ||
|
|
||
| const int ROM_CHIP = 0x00; | ||
| const int CFI_CHIP = 0x10; | ||
| const int FLASH_CHIP = 0x11; | ||
|
|
||
| const int FLASH_SECTOR_SIZE = 64 * 1024; | ||
| const int magic_addr1 = 0x0555; | ||
| const int magic_addr2 = 0x02AA; | ||
|
|
||
| static uint8 flash_state, flash_id_mode; | ||
| static uint8 *flash_data; | ||
| static uint16 flash_buffer_a[10]; | ||
| static uint8 flash_buffer_v[10]; | ||
| static uint8 flash_id[2]; | ||
|
|
||
| static DECLFW(M451FlashWrite) | ||
| { | ||
| if (flash_state < sizeof(flash_buffer_a) / sizeof(flash_buffer_a[0])) { | ||
| flash_buffer_a[flash_state] = (A & 0xFFF); | ||
| flash_buffer_v[flash_state] = V; | ||
| flash_state++; | ||
|
|
||
| // enter flash ID mode | ||
| if ((flash_state == 2) && | ||
| (flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) && | ||
| (flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) && | ||
| (flash_buffer_a[1] == magic_addr1) && (flash_buffer_v[1] == 0x90)) { | ||
| flash_id_mode = 0; | ||
| flash_state = 0; | ||
| } | ||
|
|
||
| // erase sector | ||
| if ((flash_state == 6) && | ||
| (flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) && | ||
| (flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) && | ||
| (flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0x80) && | ||
| (flash_buffer_a[3] == magic_addr1) && (flash_buffer_v[3] == 0xAA) && | ||
| (flash_buffer_a[4] == magic_addr2) && (flash_buffer_v[4] == 0x55) && | ||
| (flash_buffer_v[5] == 0x30)) { | ||
| int offset = &Page[A >> 11][A] - flash_data; | ||
| int sector = offset / FLASH_SECTOR_SIZE; | ||
| for (int i = sector * FLASH_SECTOR_SIZE; i < (sector + 1) * FLASH_SECTOR_SIZE; i++) | ||
| flash_data[i % PRGsize[ROM_CHIP]] = 0xFF; | ||
| FCEU_printf("Flash sector #%d is erased (0x%08x - 0x%08x).\n", sector, offset, offset + FLASH_SECTOR_SIZE); | ||
| } | ||
|
|
||
| // erase chip | ||
| if ((flash_state == 6) && | ||
| (flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) && | ||
| (flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) && | ||
| (flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0x80) && | ||
| (flash_buffer_a[3] == magic_addr1) && (flash_buffer_v[3] == 0xAA) && | ||
| (flash_buffer_a[4] == magic_addr2) && (flash_buffer_v[4] == 0x55) && | ||
| (flash_buffer_a[4] == magic_addr1) && (flash_buffer_v[4] == 0x10)) { | ||
| memset(flash_data, 0xFF, PRGsize[ROM_CHIP]); | ||
| FCEU_printf("Flash chip erased.\n"); | ||
| flash_state = 0; | ||
| } | ||
|
|
||
| // write byte | ||
| if ((flash_state == 4) && | ||
| (flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) && | ||
| (flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) && | ||
| (flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0xA0)) { | ||
| int offset = &Page[A >> 11][A] - flash_data; | ||
| if (CartBR(A) != 0xFF) { | ||
| FCEU_PrintError("Error: can't write to 0x%08x, flash sector is not erased.\n", offset); | ||
| } | ||
| else { | ||
| CartBW(A, V); | ||
| } | ||
| flash_state = 0; | ||
| } | ||
| } | ||
|
|
||
| // not a command | ||
| if (((A & 0x00FF) != (magic_addr1 & 0x00FF)) && ((A & 0x00FF) != (magic_addr2 & 0x00FF))) { | ||
| flash_state = 0; | ||
| } | ||
|
|
||
| // reset | ||
| if (V == 0xF0) { | ||
| flash_state = 0; | ||
| flash_id_mode = 0; | ||
| } | ||
|
|
||
| FixMMC3PRG(MMC3_cmd); | ||
| } | ||
|
|
||
| static void M451FixPRG(uint32 A, uint8 V) { | ||
| setprg8r(FLASH_CHIP, 0x8000, 0); | ||
| setprg8r(FLASH_CHIP, 0xA000, 0x10 | ((EXPREGS[0] << 2) & 0x08) | (EXPREGS[0] & 0x01)); | ||
| setprg8r(FLASH_CHIP, 0xC000, 0x20 | ((EXPREGS[0] << 2) & 0x08) | (EXPREGS[0] & 0x01)); | ||
| setprg8r(FLASH_CHIP, 0xE000, 0x30); | ||
| } | ||
|
|
||
| static void M451FixCHR(uint32 A, uint8 V) { | ||
| setchr8(EXPREGS[0] & 0x01); | ||
| } | ||
|
|
||
| static DECLFR(M451Read) { | ||
| if (flash_state == 0x90) { | ||
| return flash_id[A & 1]; | ||
| } | ||
| return CartBR(A); | ||
| } | ||
|
|
||
| static DECLFW(M451Write) { | ||
| M451FlashWrite(A, V); | ||
| switch (A & 0xE000) { | ||
| case 0xA000: | ||
| MMC3_CMDWrite(0xA000, A & 0x01); | ||
| break; | ||
| case 0xC000: | ||
| A &= 0xFF; | ||
| MMC3_IRQWrite(0xC000, A - 1); | ||
| MMC3_IRQWrite(0xC001, 0); | ||
| MMC3_IRQWrite(0xE000 + ((A == 0xFF) ? 0x00 : 0x01), 0x00); | ||
| break; | ||
| case 0xE000: | ||
| EXPREGS[0] = A & 0x03; | ||
| FixMMC3PRG(MMC3_cmd); | ||
| FixMMC3CHR(MMC3_cmd); | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| static void M451Power(void) { | ||
| GenMMC3Power(); | ||
| SetReadHandler(0x8000, 0xFFFF, M451Read); | ||
| SetWriteHandler(0x8000, 0xFFFF, M451Write); | ||
| } | ||
|
|
||
| static void StateRestore(int version) { | ||
| FixMMC3PRG(MMC3_cmd); | ||
| FixMMC3CHR(MMC3_cmd); | ||
| } | ||
|
|
||
| static void M451Close(void) { | ||
| if(flash_data) | ||
| FCEU_gfree(flash_data); | ||
| flash_data = NULL; | ||
| } | ||
|
|
||
| static void M451FlashReset(void) | ||
| { | ||
| if (flash_data) | ||
| { | ||
| size_t flash_size = PRGsize[ROM_CHIP]; | ||
| // Copy ROM to flash data | ||
| for (size_t i = 0; i < flash_size; i++) { | ||
| flash_data[i] = PRGptr[ROM_CHIP][i]; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| void Mapper451_Init(CartInfo *info) { | ||
| GenMMC3_Init(info, 512, 16, 0, 0); | ||
| pwrap = M451FixPRG; | ||
| cwrap = M451FixCHR; | ||
|
|
||
| info->Power = M451Power; | ||
| info->Close = M451Close; | ||
| GameStateRestore = StateRestore; | ||
|
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| flash_state = 0; | ||
| flash_id_mode = 0; | ||
| info->battery = 1; | ||
|
|
||
| // Allocate memory for flash | ||
| size_t flash_size = PRGsize[ROM_CHIP]; | ||
| flash_data = (uint8*)FCEU_gmalloc(flash_size); | ||
| // Copy ROM to flash data | ||
| for (size_t i = 0; i < flash_size; i++) { | ||
| flash_data[i] = PRGptr[ROM_CHIP][i]; | ||
| } | ||
| SetupCartPRGMapping(FLASH_CHIP, flash_data, flash_size, 1); | ||
| info->addSaveGameBuf( flash_data, flash_size, M451FlashReset ); | ||
|
|
||
| flash_id[0] = 0x37; | ||
| flash_id[1] = 0x86; | ||
| SetupCartPRGMapping(CFI_CHIP, flash_id, sizeof(flash_id), 0); | ||
|
|
||
| AddExState(flash_data, flash_size, 0, "FLSH"); | ||
| AddExState(&flash_state, sizeof(flash_state), 0, "FLST"); | ||
| AddExState(&flash_id_mode, sizeof(flash_id_mode), 0, "FLMD"); | ||
| AddExState(flash_buffer_a, sizeof(flash_buffer_a), 0, "FLBA"); | ||
| AddExState(flash_buffer_v, sizeof(flash_buffer_v), 0, "FLBV"); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* FCEUmm - NES/Famicom Emulator | ||
| * | ||
| * Copyright notice for this file: | ||
| * Copyright (C) 2024 negativeExponent | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| */ | ||
|
|
||
| /* NES 2.0 Mapper 471 denotes the Impact Soft IM1 circuit board, used for | ||
| * Haratyler (without HG or MP) and Haraforce. It is basically INES Mapper 201 | ||
| * with the addition of a scanline IRQ.*/ | ||
|
|
||
| #include "mapinc.h" | ||
|
|
||
| static uint32 latch; | ||
|
|
||
| static void Sync() { | ||
| setprg32(0x8000, latch); | ||
| setchr8(latch); | ||
| } | ||
|
|
||
| static DECLFW(Write) { | ||
| X6502_IRQEnd(FCEU_IQEXT); | ||
| latch = A; | ||
| Sync(); | ||
| } | ||
|
|
||
| static void Reset() { | ||
| latch = 0; | ||
| Sync(); | ||
| } | ||
|
|
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| static void Power() { | ||
| SetReadHandler(0x8000, 0xFFFF, CartBR); | ||
| SetWriteHandler(0x8000, 0xFFFF, Write); | ||
| Reset(); | ||
| } | ||
|
|
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| static void StateRestore(int version) { | ||
| Sync(); | ||
| } | ||
|
|
||
| static void HBHook() { | ||
| X6502_IRQBegin(FCEU_IQEXT); | ||
| } | ||
|
|
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| void Mapper471_Init(CartInfo *info) { | ||
| info->Power = Power; | ||
| info->Reset = Reset; | ||
| GameHBIRQHook = HBHook; | ||
| GameStateRestore = StateRestore; | ||
| AddExState(&latch, sizeof(latch), 0, "LATC"); | ||
| } |
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