libsidplayfp 1.0.3
SystemRAMBank.h
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