mirror of
https://github.com/AppleWin/AppleWin.git
synced 2024-12-22 09:30:15 +00:00
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
/*
|
|
AppleWin : An Apple //e emulator for Windows
|
|
|
|
Copyright (C) 1994-1996, Michael O'Brien
|
|
Copyright (C) 1999-2001, Oliver Schmidt
|
|
Copyright (C) 2002-2005, Tom Charlesworth
|
|
Copyright (C) 2006-2010, Tom Charlesworth, Michael Pohoreski, Nick Westgate
|
|
|
|
AppleWin 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 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
AppleWin 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 AppleWin; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/* Description: No Slot Clock/Phantom Clock (Dallas SmartWatch DS1216) emulation
|
|
*
|
|
* Author: Nick Westgate
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
class CNoSlotClock
|
|
{
|
|
class RingRegister64
|
|
{
|
|
public:
|
|
RingRegister64();
|
|
RingRegister64(UINT64 data);
|
|
|
|
void Reset();
|
|
void WriteNibble(int data);
|
|
void WriteBits(int data, int count);
|
|
void WriteBit(int data);
|
|
void ReadBit(BYTE& data);
|
|
bool CompareBit(int data);
|
|
bool NextBit();
|
|
|
|
UINT64 m_Mask;
|
|
UINT64 m_Register;
|
|
};
|
|
|
|
public:
|
|
CNoSlotClock();
|
|
|
|
void Reset();
|
|
bool ReadWrite(int address, BYTE& data, BYTE write);
|
|
bool ClockRead(BYTE& data);
|
|
void ClockWrite(int address);
|
|
|
|
void SaveSnapshot(class YamlSaveHelper& yamlSaveHelper);
|
|
void LoadSnapshot(class YamlLoadHelper& yamlLoadHelper);
|
|
|
|
bool m_bClockRegisterEnabled;
|
|
bool m_bWriteEnabled;
|
|
RingRegister64 m_ClockRegister;
|
|
RingRegister64 m_ComparisonRegister;
|
|
|
|
private:
|
|
bool Read(int address, BYTE& data);
|
|
void Write(int address);
|
|
void PopulateClockRegister();
|
|
const std::string& GetSnapshotStructName(void);
|
|
|
|
static const UINT64 kClockInitSequence = 0x5CA33AC55CA33AC5;
|
|
};
|