mirror of
https://github.com/AppleWin/AppleWin.git
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74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
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/*
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AppleWin : An Apple //e emulator for Windows
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Copyright (C) 1994-1996, Michael O'Brien
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Copyright (C) 1999-2001, Oliver Schmidt
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Copyright (C) 2002-2005, Tom Charlesworth
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Copyright (C) 2006-2010, Tom Charlesworth, Michael Pohoreski, Nick Westgate
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AppleWin is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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AppleWin is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with AppleWin; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Description: No Slot Clock (Dallas SmartWatch) emulation
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*
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* Author: Nick Westgate
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*/
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#pragma once
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class CNoSlotClock
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{
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class RingRegister
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{
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public:
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RingRegister(int bitCount);
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RingRegister(BYTE* bytes, int byteCount);
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~RingRegister();
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void Reset();
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void WriteByte(int data);
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void WriteNibble(int data);
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void WriteBits(int data, int count);
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bool WriteBit(int data);
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bool ReadBit(int& data);
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bool CompareBitNoIncrement(int data);
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bool IncrementPointer();
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private:
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RingRegister() {};
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int m_Pointer;
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int m_PointerWrap;
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int* m_pRegister;
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};
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public:
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CNoSlotClock();
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void Reset();
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bool ReadAccess(int address, int& data);
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void WriteAccess(int address);
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bool ClockRead(int& d0);
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void ClockWrite(int address);
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private:
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void PopulateClockRegister();
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bool m_bClockRegisterEnabled;
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bool m_bWriteEnabled;
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RingRegister m_ClockRegister;
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RingRegister m_ComparisonRegister;
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};
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