131 lines
3.4 KiB
C++
131 lines
3.4 KiB
C++
/*
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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) 2006-2022, Tom Charlesworth, Michael Pohoreski
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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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/*
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CopyProtectionDongles.cpp
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Emulate hardware copy protection dongles for Apple II
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Currently supported:
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- Southwestern Data Systems SoftKey for Speed Star Applesoft Compiler
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Matthew D'Asaro Dec 2022
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*/
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#include "StdAfx.h"
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#include <sstream>
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#include "CopyProtectionDongles.h"
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#include "Memory.h"
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#include "YamlHelper.h"
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static DONGLETYPE copyProtectionDongleType = DT_EMPTY;
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void SetCopyProtectionDongleType(DONGLETYPE type)
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{
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copyProtectionDongleType = type;
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}
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DONGLETYPE GetCopyProtectionDongleType(void)
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{
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return copyProtectionDongleType;
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}
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// This protection dongle consists of a NAND gate connected with AN1 and AN2 on the inputs
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// PB2 on the output, and AN0 connected to power it.
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bool SdsSpeedStar(void)
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{
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return !MemGetAnnunciator(0) || !(MemGetAnnunciator(1) && MemGetAnnunciator(2));
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}
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// Returns the copy protection dongle state of PB0. A return value of -1 means not used by copy protection dongle
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int CopyProtectionDonglePB0(void)
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{
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return -1;
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}
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// Returns the copy protection dongle state of PB1. A return value of -1 means not used by copy protection dongle
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int CopyProtectionDonglePB1(void)
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{
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return -1;
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}
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// Returns the copy protection dongle state of PB2. A return value of -1 means not used by copy protection dongle
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int CopyProtectionDonglePB2(void)
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{
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switch (copyProtectionDongleType)
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{
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case DT_SDSSPEEDSTAR: // Southwestern Data Systems SoftKey for Speed Star Applesoft Compiler
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return SdsSpeedStar();
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break;
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default:
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return -1;
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break;
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}
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}
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//===========================================================================
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static const UINT kUNIT_VERSION = 1;
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static const std::string& GetSnapshotStructName_SDSSpeedStar(void)
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{
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static const std::string name("SDS SpeedStar dongle");
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return name;
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}
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void CopyProtectionDongleSaveSnapshot(YamlSaveHelper& yamlSaveHelper)
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{
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if (copyProtectionDongleType == DT_SDSSPEEDSTAR)
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{
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yamlSaveHelper.SaveString(SS_YAML_KEY_DEVICE, GetSnapshotStructName_SDSSpeedStar());
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// NB. No state for this dongle
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}
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else
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{
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_ASSERT(0);
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}
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}
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void CopyProtectionDongleLoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT version)
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{
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if (version < 1 || version > kUNIT_VERSION)
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{
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std::ostringstream msg;
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msg << "Version " << version;
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msg << " is not supported for game I/O device.";
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throw std::runtime_error(msg.str());
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}
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std::string device = yamlLoadHelper.LoadString(SS_YAML_KEY_DEVICE);
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if (device == GetSnapshotStructName_SDSSpeedStar())
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{
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copyProtectionDongleType = DT_SDSSPEEDSTAR;
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}
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else
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{
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_ASSERT(0);
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}
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}
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