AppleWin/source/CopyProtectionDongles.cpp

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/*
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) 2006-2022, Tom Charlesworth, Michael Pohoreski
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
*/
/*
CopyProtectionDongles.cpp
Emulate hardware copy protection dongles for Apple II
Currently supported:
2023-01-01 19:34:32 +00:00
- Southwestern Data Systems DataKey for SpeedStar Applesoft Compiler
Matthew D'Asaro Dec 2022
*/
#include "StdAfx.h"
#include <sstream>
#include "CopyProtectionDongles.h"
#include "Memory.h"
#include "YamlHelper.h"
static DONGLETYPE copyProtectionDongleType = DT_EMPTY;
void SetCopyProtectionDongleType(DONGLETYPE type)
{
copyProtectionDongleType = type;
}
DONGLETYPE GetCopyProtectionDongleType(void)
{
return copyProtectionDongleType;
}
// This protection dongle consists of a NAND gate connected with AN1 and AN2 on the inputs
// PB2 on the output, and AN0 connected to power it.
bool SdsSpeedStar(void)
{
return !MemGetAnnunciator(0) || !(MemGetAnnunciator(1) && MemGetAnnunciator(2));
}
// Returns the copy protection dongle state of PB0. A return value of -1 means not used by copy protection dongle
int CopyProtectionDonglePB0(void)
{
return -1;
}
// Returns the copy protection dongle state of PB1. A return value of -1 means not used by copy protection dongle
int CopyProtectionDonglePB1(void)
{
return -1;
}
// Returns the copy protection dongle state of PB2. A return value of -1 means not used by copy protection dongle
int CopyProtectionDonglePB2(void)
{
switch (copyProtectionDongleType)
{
2023-01-01 19:34:32 +00:00
case DT_SDSSPEEDSTAR: // Southwestern Data Systems DataKey for SpeedStar Applesoft Compiler
return SdsSpeedStar();
break;
default:
return -1;
break;
}
}
//===========================================================================
static const UINT kUNIT_VERSION = 1;
static const std::string& GetSnapshotStructName_SDSSpeedStar(void)
{
static const std::string name("SDS SpeedStar dongle");
return name;
}
void CopyProtectionDongleSaveSnapshot(YamlSaveHelper& yamlSaveHelper)
{
if (copyProtectionDongleType == DT_SDSSPEEDSTAR)
{
yamlSaveHelper.SaveString(SS_YAML_KEY_DEVICE, GetSnapshotStructName_SDSSpeedStar());
// NB. No state for this dongle
}
else
{
_ASSERT(0);
}
}
void CopyProtectionDongleLoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT version)
{
if (version < 1 || version > kUNIT_VERSION)
{
std::ostringstream msg;
msg << "Version " << version;
msg << " is not supported for game I/O device.";
throw std::runtime_error(msg.str());
}
std::string device = yamlLoadHelper.LoadString(SS_YAML_KEY_DEVICE);
if (device == GetSnapshotStructName_SDSSpeedStar())
{
copyProtectionDongleType = DT_SDSSPEEDSTAR;
}
else
{
_ASSERT(0);
}
}