mirror of https://github.com/pyrollo/vinace.git
74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
|
|
/*
|
|
* Vinace
|
|
* Copyright (C) P.Y. Rollo 2009 <dev@pyrollo.com>
|
|
*
|
|
* Vinace 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Vinace 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "c-language-card-bus.hpp"
|
|
#
|
|
CLanguageCardBus::CLanguageCardBus(CLanguageCardUnit *unit, CMemory *rom12k, CMemory *ram16k) {
|
|
this->unit = unit;
|
|
|
|
this->loRom = rom12k;
|
|
this->hiRom = new CMemoryProxy(rom12k, 0x1000);
|
|
this->loRam1 = ram16k;
|
|
this->loRam2 = new CMemoryProxy(ram16k, 0x1000);
|
|
this->hiRam = new CMemoryProxy(ram16k, 0x2000);
|
|
|
|
unit->subscribe(this);
|
|
|
|
// Suppose settings have changed
|
|
notify((CObservable *)unit);
|
|
}
|
|
|
|
CLanguageCardBus::~CLanguageCardBus() {
|
|
unit->unsubscribe(this);
|
|
delete hiRom;
|
|
delete loRam2;
|
|
delete hiRam;
|
|
}
|
|
|
|
BYTE CLanguageCardBus::read(WORD addr) {
|
|
if (addr <0x1000) return loMemRead->read(addr);
|
|
if (addr <0x3000) return hiMemRead->read(addr-0x1000);
|
|
}
|
|
|
|
void CLanguageCardBus::write(WORD addr, BYTE byte) {
|
|
if (addr <0x1000 and loMemWrite) {loMemWrite->write(addr, byte); return; }
|
|
if (addr <0x3000 and hiMemWrite) {hiMemWrite->write(addr-0x1000, byte); return; }
|
|
}
|
|
|
|
// Language card settings have changed, so change memory mapping
|
|
|
|
void CLanguageCardBus::notify(CObservable * obs) {
|
|
if (unit->get_lcram()) {
|
|
loMemRead = (unit->get_lcbnk2())?loRam2:loRam1;
|
|
hiMemRead = hiRam;
|
|
} else {
|
|
loMemRead = loRom;
|
|
hiMemRead = hiRom;
|
|
}
|
|
|
|
if (unit->get_lcwrite()) {
|
|
loMemWrite = (unit->get_lcbnk2())?loRam2:loRam1;
|
|
hiMemWrite = hiRam;
|
|
} else {
|
|
loMemWrite = 0;
|
|
hiMemWrite = 0;
|
|
}
|
|
}
|
|
|