mirror of https://github.com/pyrollo/vinace.git
54 lines
1.6 KiB
C++
54 lines
1.6 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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#ifndef _C_IO_UNIT_HPP_
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#define _C_IO_UNIT_HPP_
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#include "c-memory.hpp"
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#include "units/c-unit.hpp"
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class CDummyUnit:public CUnit
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{
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public:
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void write(BYTE addr, BYTE byte) {};
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BYTE read(BYTE addr) { return dummy_byte() & 0x7F; };
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};
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class CIoUnit: public CMemory
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{
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public:
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CIoUnit();
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virtual void reset() = 0;
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virtual void write(WORD addr, BYTE byte);
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virtual BYTE read(WORD addr);
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void assign_read(BYTE addr, CUnit *unit);
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void assign_write(BYTE addr, CUnit *unit);
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void assign_read_write(BYTE addr, CUnit *unit);
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void assign_read(BYTE startaddr, BYTE endaddr, CUnit *unit);
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void assign_write(BYTE startaddr, BYTE endaddr, CUnit *unit);
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void assign_read_write(BYTE startaddr, BYTE endaddr, CUnit *unit);
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protected:
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CUnit *dummy;
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CUnit *read_map[256];
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CUnit *write_map[256];
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};
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#endif // _C_IO_UNIT_HPP_
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