libsidplayfp 1.0.3
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00001 /* 00002 * This file is part of libsidplayfp, a SID player engine. 00003 * 00004 * Copyright 2012-2013 Leandro Nini <drfiemost@users.sourceforge.net> 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2 of the License, or 00009 * (at your option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this program; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00019 */ 00020 00021 #ifndef EXTRASIDBANK_H 00022 #define EXTRASIDBANK_H 00023 00024 #include "Bank.h" 00025 #include "sidplayfp/sidemu.h" 00026 00030 class ExtraSidBank : public Bank 00031 { 00032 private: 00037 static const int MAPPER_SIZE = 8; 00038 00039 private: 00045 Bank *mapper[MAPPER_SIZE]; 00046 00047 sidemu *sid; 00048 00049 private: 00050 static unsigned int mapperIndex(int address) { return address >> 5 & (MAPPER_SIZE - 1); } 00051 00052 public: 00053 ExtraSidBank() : sid(0) {} 00054 00055 void reset() 00056 { 00057 if (sid) 00058 sid->reset(0xf); 00059 } 00060 00061 void resetSIDMapper(Bank *bank) 00062 { 00063 for (int i = 0; i < MAPPER_SIZE; i++) 00064 mapper[i] = bank; 00065 } 00066 00072 void setSIDMapping(int address) 00073 { 00074 if (sid) 00075 mapper[mapperIndex(address)] = sid; 00076 } 00077 00078 uint8_t peek(uint_least16_t addr) 00079 { 00080 return mapper[mapperIndex(addr)]->peek(addr); 00081 } 00082 00083 void poke(uint_least16_t addr, uint8_t data) 00084 { 00085 mapper[mapperIndex(addr)]->poke(addr, data); 00086 } 00087 00093 void setSID(sidemu *s) { sid = s; } 00094 00100 sidemu *getSID() const { return sid; } 00101 }; 00102 00103 #endif