72 lines
2.7 KiB
C
72 lines
2.7 KiB
C
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2025 NewRisingSun
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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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#include "mapinc.h"
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#include "cartram.h"
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static uint8 *CHRRAMData = NULL;
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static uint8 *WRAMData = NULL;
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uint32 CHRRAMSize = 0;
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uint32 WRAMSize = 0;
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void CartRAM_close (void) { /* Need to combine this in one function to avoid the problem of having to properly cascade two separate Close() functions for WRAM and CHR-RAM each */
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if (WRAMData) {
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FCEU_gfree(WRAMData);
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WRAMData = NULL;
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}
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if (CHRRAMData) {
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FCEU_gfree(CHRRAMData);
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CHRRAMData = NULL;
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}
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}
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void CartRAM_init (CartInfo *info, uint8 defaultWRAMSizeKiB, uint8 defaultCHRRAMSizeKiB) {
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WRAMSize = info->iNES2? (info->PRGRamSize +info->PRGRamSaveSize): (defaultWRAMSizeKiB *1024);
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if (WRAMSize) {
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WRAMData = (uint8*)FCEU_gmalloc(WRAMSize);
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SetupCartPRGMapping(0x10, WRAMData, WRAMSize, 1);
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AddExState(WRAMData, WRAMSize, 0, "WRAM");
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if (info->battery && (info->PRGRamSaveSize || !info->iNES2)) {
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info->SaveGame[0] = WRAMData;
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info->SaveGameLen[0] = info->iNES2? info->PRGRamSaveSize: WRAMSize;
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}
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}
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CHRRAMSize = info->iNES2? (info->CHRRamSize +info->CHRRamSaveSize): (defaultCHRRAMSizeKiB *1024);
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if (ROM_size == 0) CHRRAMSize = 0; /* If there is no CHR-ROM, then any CHR-RAM will not be "extra" and therefore will be handled by ines.c, not here. */
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if (CHRRAMSize) {
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CHRRAMData = (uint8*)FCEU_gmalloc(CHRRAMSize);
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SetupCartCHRMapping(0x10, CHRRAMData, CHRRAMSize, 1);
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AddExState(CHRRAMData, CHRRAMSize, 0, "CRAM");
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if (info->battery && (info->CHRRamSaveSize || !info->iNES2)) {
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info->SaveGame[info->SaveGameLen[0]? 1: 0] = CHRRAMData;
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info->SaveGameLen[info->SaveGameLen[0]? 1: 0] = info->iNES2? info->CHRRamSaveSize: CHRRAMSize;
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}
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}
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if (WRAMSize || CHRRAMSize) info->Close = CartRAM_close;
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}
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void CHRRAM_init (CartInfo *info, uint8 defaultCHRRAMSizeKiB) {
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CartRAM_init(info, 0, defaultCHRRAMSizeKiB);
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}
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void WRAM_init (CartInfo *info, uint8 defaultWRAMSizeKiB) {
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CartRAM_init(info, defaultWRAMSizeKiB, 0);
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}
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