mirror of https://github.com/pyrollo/vinace.git
57 lines
1.7 KiB
C++
57 lines
1.7 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_PROCESSOR_HPP_
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#define _C_PROCESSOR_HPP_
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#define SIGNAL_RESET 0 // Reset signal
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#include "c-memory.hpp"
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class CProcessor
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{
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public:
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CProcessor(CMemory *memory, int number_of_signals = 0);
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~CProcessor();
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void cycle(); // Play one machine cycle (may do nothing)
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void signal(int signal); // Send a signal (IRQ, Reset, ...) to the processor
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// Access to internal processor state
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int get_cycles() { return cycles; };
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bool is_waiting() { return waiting; };
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protected:
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CMemory *memory; // Memory (or bus) accessed by the processor
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int number_of_signals;
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int *signals; // Pending signals
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int cycles; // Remaining cycles before end of instruction
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bool waiting; // Indicates if cycle() has just waited
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virtual void reset() {} ; // Reset the processor
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virtual void process_instruction() {}; // Execute the next opcode
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virtual bool process_signals() {}; // Process signals, returns true if no signal and false if there was one
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private:
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};
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#endif // _C_PROCESSOR_HPP_
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