mirror of https://github.com/pyrollo/vinace.git
78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
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/*
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* Vinace
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* Copyright (C) P.Y. Rollo 2009 <dev@pyrollo.com>
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*
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* Vinace is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Vinace is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "c-io-unit.hpp"
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CIoUnit::CIoUnit() {
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dummy = new CDummyUnit();
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// Assign dummy unit to each address
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for (int addr=0; addr<256; addr++) {
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read_map[addr] = dummy;
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write_map[addr] = dummy;
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}
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}
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//
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// Memory read and write methods
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//
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void CIoUnit::write(WORD addr, BYTE byte) {
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write_map[addr&0xff]->write(addr&0xff, byte);
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}
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BYTE CIoUnit::read(WORD addr) {
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return read_map[addr&0xff]->read(addr&0xff);
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}
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//
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// Unit assignation
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//
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void CIoUnit::assign_read(BYTE addr, CUnit *unit) {
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read_map[addr&0xff] = unit;
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}
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void CIoUnit::assign_write(BYTE addr, CUnit *unit) {
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write_map[addr] = unit;
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}
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void CIoUnit::assign_read_write(BYTE addr, CUnit *unit) {
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assign_read(addr, unit);
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assign_write(addr, unit);
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}
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void CIoUnit::assign_read(BYTE startaddr, BYTE endaddr, CUnit *unit) {
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for (int addr = startaddr; addr <= endaddr; addr++)
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assign_read(addr, unit);
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}
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void CIoUnit::assign_write(BYTE startaddr, BYTE endaddr, CUnit *unit) {
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for (int addr = startaddr; addr <= endaddr; addr++)
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assign_write(addr, unit);
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}
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void CIoUnit::assign_read_write(BYTE startaddr, BYTE endaddr, CUnit *unit) {
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for (int addr = startaddr; addr <= endaddr; addr++) {
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assign_read(addr, unit);
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assign_write(addr, unit);
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}
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}
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