00001 /* 00002 * This file is part of libsidplayfp, a SID player engine. 00003 * 00004 * Copyright 2012-2013 Leandro Nini <drfiemost@users.sourceforge.net> 00005 * Copyright 2010 Antti Lankila 00006 * 00007 * This program is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 2 of the License, or 00010 * (at your option) any later version. 00011 * 00012 * This program is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with this program; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00020 */ 00021 00022 #ifndef SYSTEMRAMBANK_H 00023 #define SYSTEMRAMBANK_H 00024 00025 #include <string.h> 00026 #include <stdint.h> 00027 00028 #include "Bank.h" 00029 00035 class SystemRAMBank : public Bank 00036 { 00037 private: 00039 uint8_t ram[65536]; 00040 00041 public: 00043 void reset() 00044 { 00045 memset(ram, 0, 65536); 00046 for (int i = 0x07c0; i < 0x10000; i += 128) 00047 { 00048 memset(ram+i, 0xff, 64); 00049 } 00050 } 00051 00052 uint8_t peek(uint_least16_t address) 00053 { 00054 return ram[address]; 00055 } 00056 00057 void poke(uint_least16_t address, uint8_t value) 00058 { 00059 ram[address] = value; 00060 } 00061 00062 uint8_t* array() 00063 { 00064 return ram; 00065 } 00066 }; 00067 00068 #endif