ExtraSidBank.h
/*
* This file is part of libsidplayfp, a SID player engine.
*
* Copyright 2012-2013 Leandro Nini <drfiemost@users.sourceforge.net>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef EXTRASIDBANK_H
#define EXTRASIDBANK_H
#include "Bank.h"
#include "sidplayfp/c64/c64sid.h"
#include "NullSid.h"
class ExtraSidBank : public Bank
{
private:
static const int MAPPER_SIZE = 8;
private:
Bank *mapper[MAPPER_SIZE];
c64sid *sid;
private:
static unsigned int mapperIndex(int address) { return address >> 5 & (MAPPER_SIZE - 1); }
public:
ExtraSidBank() :
sid(NullSid::getInstance())
{}
void reset()
{
sid->reset(0xf);
}
void resetSIDMapper(Bank *bank)
{
for (int i = 0; i < MAPPER_SIZE; i++)
mapper[i] = bank;
}
void setSIDMapping(int address)
{
mapper[mapperIndex(address)] = sid;
}
uint8_t peek(uint_least16_t addr)
{
return mapper[mapperIndex(addr)]->peek(addr);
}
void poke(uint_least16_t addr, uint8_t data)
{
mapper[mapperIndex(addr)]->poke(addr, data);
}
void setSID(c64sid *s) { sid = (s != 0) ? s : NullSid::getInstance(); }
};
#endif
NullSid::getInstance
static NullSid * getInstance()
Returns singleton instance.
Definition: NullSid.h:38
c64sid
Definition: c64sid.h:31
Bank::peek
virtual uint8_t peek(uint_least16_t address)=0
ExtraSidBank::peek
uint8_t peek(uint_least16_t addr)
Definition: ExtraSidBank.h:80
ExtraSidBank::setSIDMapping
void setSIDMapping(int address)
Definition: ExtraSidBank.h:75
Bank
Definition: Bank.h:32
ExtraSidBank::poke
void poke(uint_least16_t addr, uint8_t data)
Definition: ExtraSidBank.h:85
ExtraSidBank::setSID
void setSID(c64sid *s)
Definition: ExtraSidBank.h:95
ExtraSidBank
Definition: ExtraSidBank.h:32
Bank::poke
virtual void poke(uint_least16_t address, uint8_t value)=0