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thor2016thor2016
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Merge pull request #767 from negativeExponent/add_m451_m471
Add mappers 451 and 471
2 parents 3f599cb + fb0b178 commit 940c895

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8 files changed

+297
-2
lines changed

8 files changed

+297
-2
lines changed

‎src/CMakeLists.txt

+3-1
Original file line numberDiff line numberDiff line change
@@ -447,7 +447,9 @@ set(SRC_CORE
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${CMAKE_CURRENT_SOURCE_DIR}/boards/34.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/354.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/413.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/36.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/471.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/451.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/36.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/3d-block.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/40.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/boards/411120-c.cpp

‎src/boards/451.cpp

+216
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,216 @@
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/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2024 negativeExponent
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* NES 2.0 Mapper 451 is used for the homebrew game Haratyler HP/MP. It is
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* basically a homebrew TLROM-like circuit board that implements the MMC3
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* register's in an unusual fashion, and saves the high score to flash ROM */
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#include "mapinc.h"
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#include "mmc3.h"
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#include "../ines.h"
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const int ROM_CHIP = 0x00;
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const int CFI_CHIP = 0x10;
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const int FLASH_CHIP = 0x11;
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const int FLASH_SECTOR_SIZE = 64 * 1024;
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const int magic_addr1 = 0x0555;
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const int magic_addr2 = 0x02AA;
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static uint8 flash_state, flash_id_mode;
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static uint8 *flash_data;
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static uint16 flash_buffer_a[10];
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static uint8 flash_buffer_v[10];
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static uint8 flash_id[2];
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static DECLFW(M451FlashWrite)
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{
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if (flash_state < sizeof(flash_buffer_a) / sizeof(flash_buffer_a[0])) {
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flash_buffer_a[flash_state] = (A & 0xFFF);
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flash_buffer_v[flash_state] = V;
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flash_state++;
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// enter flash ID mode
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if ((flash_state == 2) &&
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(flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) &&
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(flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) &&
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(flash_buffer_a[1] == magic_addr1) && (flash_buffer_v[1] == 0x90)) {
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flash_id_mode = 0;
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flash_state = 0;
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}
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// erase sector
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if ((flash_state == 6) &&
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(flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) &&
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(flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) &&
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(flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0x80) &&
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(flash_buffer_a[3] == magic_addr1) && (flash_buffer_v[3] == 0xAA) &&
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(flash_buffer_a[4] == magic_addr2) && (flash_buffer_v[4] == 0x55) &&
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(flash_buffer_v[5] == 0x30)) {
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int offset = &Page[A >> 11][A] - flash_data;
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int sector = offset / FLASH_SECTOR_SIZE;
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for (int i = sector * FLASH_SECTOR_SIZE; i < (sector + 1) * FLASH_SECTOR_SIZE; i++)
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flash_data[i % PRGsize[ROM_CHIP]] = 0xFF;
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FCEU_printf("Flash sector #%d is erased (0x%08x - 0x%08x).\n", sector, offset, offset + FLASH_SECTOR_SIZE);
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}
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// erase chip
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if ((flash_state == 6) &&
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(flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) &&
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(flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) &&
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(flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0x80) &&
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(flash_buffer_a[3] == magic_addr1) && (flash_buffer_v[3] == 0xAA) &&
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(flash_buffer_a[4] == magic_addr2) && (flash_buffer_v[4] == 0x55) &&
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(flash_buffer_a[4] == magic_addr1) && (flash_buffer_v[4] == 0x10)) {
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memset(flash_data, 0xFF, PRGsize[ROM_CHIP]);
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FCEU_printf("Flash chip erased.\n");
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flash_state = 0;
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}
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// write byte
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if ((flash_state == 4) &&
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(flash_buffer_a[0] == magic_addr1) && (flash_buffer_v[0] == 0xAA) &&
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(flash_buffer_a[1] == magic_addr2) && (flash_buffer_v[1] == 0x55) &&
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(flash_buffer_a[2] == magic_addr1) && (flash_buffer_v[2] == 0xA0)) {
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int offset = &Page[A >> 11][A] - flash_data;
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if (CartBR(A) != 0xFF) {
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FCEU_PrintError("Error: can't write to 0x%08x, flash sector is not erased.\n", offset);
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}
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else {
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CartBW(A, V);
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}
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flash_state = 0;
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}
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}
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// not a command
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if (((A & 0x00FF) != (magic_addr1 & 0x00FF)) && ((A & 0x00FF) != (magic_addr2 & 0x00FF))) {
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flash_state = 0;
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}
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// reset
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if (V == 0xF0) {
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flash_state = 0;
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flash_id_mode = 0;
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}
113+
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FixMMC3PRG(MMC3_cmd);
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}
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static void M451FixPRG(uint32 A, uint8 V) {
118+
setprg8r(FLASH_CHIP, 0x8000, 0);
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setprg8r(FLASH_CHIP, 0xA000, 0x10 | ((EXPREGS[0] << 2) & 0x08) | (EXPREGS[0] & 0x01));
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setprg8r(FLASH_CHIP, 0xC000, 0x20 | ((EXPREGS[0] << 2) & 0x08) | (EXPREGS[0] & 0x01));
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setprg8r(FLASH_CHIP, 0xE000, 0x30);
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}
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static void M451FixCHR(uint32 A, uint8 V) {
125+
setchr8(EXPREGS[0] & 0x01);
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}
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static DECLFR(M451Read) {
129+
if (flash_state == 0x90) {
130+
return flash_id[A & 1];
131+
}
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return CartBR(A);
133+
}
134+
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static DECLFW(M451Write) {
136+
M451FlashWrite(A, V);
137+
switch (A & 0xE000) {
138+
case 0xA000:
139+
MMC3_CMDWrite(0xA000, A & 0x01);
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break;
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case 0xC000:
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A &= 0xFF;
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MMC3_IRQWrite(0xC000, A - 1);
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MMC3_IRQWrite(0xC001, 0);
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MMC3_IRQWrite(0xE000 + ((A == 0xFF) ? 0x00 : 0x01), 0x00);
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break;
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case 0xE000:
148+
EXPREGS[0] = A & 0x03;
149+
FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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break;
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}
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}
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static void M451Power(void) {
156+
GenMMC3Power();
157+
SetReadHandler(0x8000, 0xFFFF, M451Read);
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SetWriteHandler(0x8000, 0xFFFF, M451Write);
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}
160+
161+
static void StateRestore(int version) {
162+
FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
164+
}
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static void M451Close(void) {
167+
if(flash_data)
168+
FCEU_gfree(flash_data);
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flash_data = NULL;
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}
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static void M451FlashReset(void)
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{
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if (flash_data)
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{
176+
size_t flash_size = PRGsize[ROM_CHIP];
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// Copy ROM to flash data
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for (size_t i = 0; i < flash_size; i++) {
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flash_data[i] = PRGptr[ROM_CHIP][i];
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}
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}
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}
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void Mapper451_Init(CartInfo *info) {
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GenMMC3_Init(info, 512, 16, 0, 0);
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pwrap = M451FixPRG;
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cwrap = M451FixCHR;
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info->Power = M451Power;
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info->Close = M451Close;
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GameStateRestore = StateRestore;
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flash_state = 0;
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flash_id_mode = 0;
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info->battery = 1;
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// Allocate memory for flash
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size_t flash_size = PRGsize[ROM_CHIP];
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flash_data = (uint8*)FCEU_gmalloc(flash_size);
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// Copy ROM to flash data
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for (size_t i = 0; i < flash_size; i++) {
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flash_data[i] = PRGptr[ROM_CHIP][i];
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}
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SetupCartPRGMapping(FLASH_CHIP, flash_data, flash_size, 1);
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info->addSaveGameBuf( flash_data, flash_size, M451FlashReset );
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flash_id[0] = 0x37;
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flash_id[1] = 0x86;
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SetupCartPRGMapping(CFI_CHIP, flash_id, sizeof(flash_id), 0);
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AddExState(flash_data, flash_size, 0, "FLSH");
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AddExState(&flash_state, sizeof(flash_state), 0, "FLST");
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AddExState(&flash_id_mode, sizeof(flash_id_mode), 0, "FLMD");
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AddExState(flash_buffer_a, sizeof(flash_buffer_a), 0, "FLBA");
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AddExState(flash_buffer_v, sizeof(flash_buffer_v), 0, "FLBV");
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}

‎src/boards/471.cpp

+65
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@@ -0,0 +1,65 @@
1+
/* FCEUmm - NES/Famicom Emulator
2+
*
3+
* Copyright notice for this file:
4+
* Copyright (C) 2024 negativeExponent
5+
*
6+
* This program is free software; you can redistribute it and/or modify
7+
* it under the terms of the GNU General Public License as published by
8+
* the Free Software Foundation; either version 2 of the License, or
9+
* (at your option) any later version.
10+
*
11+
* This program is distributed in the hope that it will be useful,
12+
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13+
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14+
* GNU General Public License for more details.
15+
*
16+
* You should have received a copy of the GNU General Public License
17+
* along with this program; if not, write to the Free Software
18+
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19+
*/
20+
21+
/* NES 2.0 Mapper 471 denotes the Impact Soft IM1 circuit board, used for
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* Haratyler (without HG or MP) and Haraforce. It is basically INES Mapper 201
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* with the addition of a scanline IRQ.*/
24+
25+
#include "mapinc.h"
26+
27+
static uint32 latch;
28+
29+
static void Sync() {
30+
setprg32(0x8000, latch);
31+
setchr8(latch);
32+
}
33+
34+
static DECLFW(Write) {
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X6502_IRQEnd(FCEU_IQEXT);
36+
latch = A;
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Sync();
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}
39+
40+
static void Reset() {
41+
latch = 0;
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Sync();
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}
44+
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static void Power() {
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x8000, 0xFFFF, Write);
48+
Reset();
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}
50+
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static void StateRestore(int version) {
52+
Sync();
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}
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55+
static void HBHook() {
56+
X6502_IRQBegin(FCEU_IQEXT);
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}
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void Mapper471_Init(CartInfo *info) {
60+
info->Power = Power;
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info->Reset = Reset;
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GameHBIRQHook = HBHook;
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GameStateRestore = StateRestore;
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AddExState(&latch, sizeof(latch), 0, "LATC");
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}

‎src/drivers/libretro/fceux_libretro.so

1.17 MB
Binary file not shown.

‎src/ines.cpp

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@@ -810,6 +810,8 @@ BMAPPINGLocal bmap[] = {
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{"Impact Soft MMC3 Flash Board", 406, Mapper406_Init },
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{"Super Russian Roulette", 413, Mapper413_Init },
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{"INX_007T_V01", 470, INX_007T_Init },
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{"Haratyler HP/MP", 451, Mapper451_Init },
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{"Impact Soft IM1", 471, Mapper471_Init },
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814816
{"KONAMI QTAi Board", 547, QTAi_Init },
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‎src/ines.h

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@@ -281,6 +281,8 @@ void Mapper255_Init(CartInfo *);
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void Mapper354_Init(CartInfo *);
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void Mapper406_Init(CartInfo *);
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void Mapper413_Init(CartInfo *);
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void Mapper451_Init(CartInfo *);
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void Mapper471_Init(CartInfo *);
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285287
void INX_007T_Init(CartInfo* info);
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void GN45_Init(CartInfo *info); /* previously mapper 205 */

‎vc/vc14_fceux.vcxproj

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@@ -438,6 +438,8 @@ xcopy /y /d "$(ProjectDir)\..\src\drivers\win\7z_64.dll" "$(OutDir)"</Command>
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<ClCompile Include="..\src\boards\34.cpp" />
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<ClCompile Include="..\src\boards\354.cpp" />
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<ClCompile Include="..\src\boards\413.cpp" />
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<ClCompile Include="..\src\boards\471.cpp" />
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<ClCompile Include="..\src\boards\451.cpp" />
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<ClCompile Include="..\src\boards\36.cpp" />
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<ClCompile Include="..\src\boards\3d-block.cpp" />
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<ClCompile Include="..\src\boards\40.cpp" />

‎vc/vc14_fceux.vcxproj.filters

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@@ -1123,6 +1123,12 @@
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<ClCompile Include="..\src\boards\413.cpp">
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<Filter>boards</Filter>
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</ClCompile>
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<ClCompile Include="..\src\boards\471.cpp">
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<Filter>boards</Filter>
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</ClCompile>
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<ClCompile Include="..\src\boards\451.cpp">
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<Filter>boards</Filter>
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</ClCompile>
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<ClCompile Include="..\src\debugsymboltable.cpp" />
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</ItemGroup>
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<ItemGroup>
@@ -1976,4 +1982,4 @@
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<ItemGroup>
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<Image Include="..\src\drivers\win\res\bitmap21.bmp" />
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</ItemGroup>
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</Project>
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</Project>

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