-
-
Notifications
You must be signed in to change notification settings - Fork 45
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
8 changed files
with
206 additions
and
4 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,162 @@ | ||
| /* | ||
| * Copyright (C) 2010-2023 Fabio Cavallo (aka FHorse) | ||
| * | ||
| * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
| */ | ||
|
|
||
| #include <string.h> | ||
| #include "mappers.h" | ||
| #include "cpu.h" | ||
| #include "save_slot.h" | ||
|
|
||
| INLINE static void prg_fix_272(void); | ||
| INLINE static void chr_fix_272(void); | ||
| INLINE static void mirroring_fix_272(void); | ||
|
|
||
| struct _m272 { | ||
| BYTE prg[2]; | ||
| BYTE chr[8]; | ||
| BYTE mirroring[2]; | ||
| struct _m272_irq { | ||
| BYTE enabled; | ||
| BYTE counter; | ||
| WORD index; | ||
| } irq; | ||
| } m272; | ||
|
|
||
| void map_init_272(void) { | ||
| EXTCL_AFTER_MAPPER_INIT(272); | ||
| EXTCL_CPU_WR_MEM(272); | ||
| EXTCL_SAVE_MAPPER(272); | ||
| EXTCL_PPU_000_TO_34X(272); | ||
| mapper.internal_struct[0] = (BYTE *)&m272; | ||
| mapper.internal_struct_size[0] = sizeof(m272); | ||
|
|
||
| if (info.reset >= HARD) { | ||
| memset(&m272, 0x00, sizeof(m272)); | ||
| } | ||
| } | ||
| void extcl_after_mapper_init_272(void) { | ||
| prg_fix_272(); | ||
| chr_fix_272(); | ||
| mirroring_fix_272(); | ||
| } | ||
| void extcl_cpu_wr_mem_272(BYTE nidx, WORD address, BYTE value) { | ||
| switch (address & 0xC000) { | ||
| case 0x8000: | ||
| if ((address & 0x000C) == 0x0004) { | ||
| m272.mirroring[0] = value & 0x03; | ||
| mirroring_fix_272(); | ||
| } else if ((address & 0x000C) == 0x000C) { | ||
| nes[nidx].c.irq.high |= EXT_IRQ; | ||
| } | ||
| break; | ||
| case 0xC000: | ||
| if ((address & 0x000C) == 0x0004) { | ||
| nes[nidx].c.irq.high &= ~EXT_IRQ; | ||
| } else if ((address & 0x000C) == 0x0008) { | ||
| m272.irq.enabled = TRUE; | ||
| } else if ((address & 0x000C) == 0x000C) { | ||
| nes[nidx].c.irq.high &= ~EXT_IRQ; | ||
| m272.irq.enabled = FALSE; | ||
| m272.irq.counter = 0; | ||
| } | ||
| break; | ||
| } | ||
| switch (address & 0xF000) { | ||
| case 0x8000: | ||
| m272.prg[0] = value; | ||
| prg_fix_272(); | ||
| break; | ||
| case 0x9000: | ||
| m272.mirroring[1] = value & 0x01; | ||
| mirroring_fix_272(); | ||
| break; | ||
| case 0xA000: | ||
| m272.prg[1] = value; | ||
| prg_fix_272(); | ||
| break; | ||
| case 0xF000: | ||
| break; | ||
| default: { | ||
| BYTE index = ((address - 0xB000) >> 11) | ((address & 0x02) >> 1); | ||
|
|
||
| if (address & 0x0001) { | ||
| m272.chr[index] = (m272.chr[index] & 0x0F) | ((value & 0x0F) << 4); | ||
| } else { | ||
| m272.chr[index] = (m272.chr[index] & 0xF0) | (value & 0x0F); | ||
| } | ||
| chr_fix_272(); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| BYTE extcl_save_mapper_272(BYTE mode, BYTE slot, FILE *fp) { | ||
| save_slot_ele(mode, slot, m272.prg); | ||
| save_slot_ele(mode, slot, m272.chr); | ||
| save_slot_ele(mode, slot, m272.mirroring); | ||
| save_slot_ele(mode, slot, m272.irq.enabled); | ||
| save_slot_ele(mode, slot, m272.irq.counter); | ||
| return (EXIT_OK); | ||
| } | ||
| void extcl_ppu_000_to_34x_272(BYTE nidx) { | ||
| if (nes[nidx].p.r2001.visible && ((nes[nidx].p.ppu.frame_y >= nes[nidx].p.ppu_sclines.vint)) && | ||
| (nes[nidx].p.ppu.frame_y < nes[nidx].p.ppu_sclines.total)) { | ||
| if (++m272.irq.index == 6) { | ||
| if (m272.irq.enabled && (++m272.irq.counter == 84)) { | ||
| nes[nidx].c.irq.high |= EXT_IRQ; | ||
| m272.irq.counter = 0; | ||
| } | ||
| } else if (m272.irq.index == 8) { | ||
| m272.irq.index = 0; | ||
| } | ||
| } | ||
| if (nes[nidx].p.ppu.frame_x == 340) { | ||
| m272.irq.index = 0; | ||
| } | ||
| } | ||
|
|
||
| INLINE static void prg_fix_272(void) { | ||
| memmap_auto_8k(0, MMCPU(0x8000), m272.prg[0]); | ||
| memmap_auto_8k(0, MMCPU(0xA000), m272.prg[1]); | ||
| memmap_auto_16k(0, MMCPU(0xC000), 0xFF); | ||
| } | ||
| INLINE static void chr_fix_272(void) { | ||
| memmap_auto_1k(0, MMPPU(0x0000), m272.chr[0]); | ||
| memmap_auto_1k(0, MMPPU(0x0400), m272.chr[1]); | ||
| memmap_auto_1k(0, MMPPU(0x0800), m272.chr[2]); | ||
| memmap_auto_1k(0, MMPPU(0x0C00), m272.chr[3]); | ||
| memmap_auto_1k(0, MMPPU(0x1000), m272.chr[4]); | ||
| memmap_auto_1k(0, MMPPU(0x1400), m272.chr[5]); | ||
| memmap_auto_1k(0, MMPPU(0x1800), m272.chr[6]); | ||
| memmap_auto_1k(0, MMPPU(0x1C00), m272.chr[7]); | ||
| } | ||
| INLINE static void mirroring_fix_272(void) { | ||
| switch (m272.mirroring[0]) { | ||
| default: | ||
| if (m272.mirroring[1]) { | ||
| mirroring_H(0); | ||
| } else { | ||
| mirroring_V(0); | ||
| } | ||
| break; | ||
| case 2: | ||
| mirroring_SCR0(0); | ||
| break; | ||
| case 3: | ||
| mirroring_SCR1(0); | ||
| break; | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| /* | ||
| * Copyright (C) 2010-2023 Fabio Cavallo (aka FHorse) | ||
| * | ||
| * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
| */ | ||
|
|
||
| #ifndef MAPPER_272_H_ | ||
| #define MAPPER_272_H_ | ||
|
|
||
| #include "common.h" | ||
|
|
||
| void map_init_272(void); | ||
| void extcl_after_mapper_init_272(void); | ||
| void extcl_cpu_wr_mem_272(BYTE nidx, WORD address, BYTE value); | ||
| BYTE extcl_save_mapper_272(BYTE mode, BYTE slot, FILE *fp); | ||
|
|
||
| void extcl_ppu_000_to_34x_272(BYTE nidx); | ||
| void extcl_rd_ppu_mem_272(BYTE nidx, WORD address); | ||
|
|
||
| #endif /* MAPPER_272_H_ */ |