AppleWin/source/SaveState.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
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Copyright (C) 2006-2015, Tom Charlesworth, Michael Pohoreski
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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: Save-state (snapshot) module
*
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* Author: Copyright (c) 2004-2015 Tom Charlesworth
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*/
#include "StdAfx.h"
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#include "SaveState_Structs_v1.h"
#include "YamlHelper.h"
#include "AppleWin.h"
#include "CPU.h"
#include "Disk.h"
#include "Frame.h"
#include "Joystick.h"
#include "Keyboard.h"
#include "Memory.h"
#include "Mockingboard.h"
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#include "MouseInterface.h"
#include "ParallelPrinter.h"
#include "Pravets.h"
#include "SerialComms.h"
#include "Speaker.h"
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#include "Speech.h"
#include "Video.h"
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#include "z80emu.h"
#include "Configuration\Config.h"
#include "Configuration\IPropertySheet.h"
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#define DEFAULT_SNAPSHOT_NAME "SaveState.aws.yaml"
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bool g_bSaveStateOnExit = false;
static std::string g_strSaveStateFilename;
static std::string g_strSaveStatePathname;
static std::string g_strSaveStatePath;
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static YamlHelper yamlHelper;
#define SS_FILE_VER 2
#define UNIT_APPLE2_VER 1
#define UNIT_SLOTS_VER 1
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//-----------------------------------------------------------------------------
void Snapshot_SetFilename(std::string strPathname)
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{
if (strPathname.empty())
{
g_strSaveStateFilename = DEFAULT_SNAPSHOT_NAME;
g_strSaveStatePathname = g_sCurrentDir;
if (g_strSaveStatePathname.length() && g_strSaveStatePathname[g_strSaveStatePathname.length()-1] != '\\')
g_strSaveStatePathname += "\\";
g_strSaveStatePathname.append(DEFAULT_SNAPSHOT_NAME);
g_strSaveStatePath = g_sCurrentDir;
return;
}
std::string strFilename = strPathname; // Set default, as maybe there's no path
g_strSaveStatePath.clear();
int nIdx = strPathname.find_last_of('\\');
if (nIdx >= 0 && nIdx+1 < (int)strPathname.length())
{
strFilename = &strPathname[nIdx+1];
g_strSaveStatePath = strPathname.substr(0, nIdx+1); // Bugfix: 1.25.0.2 // Snapshot_LoadState() -> SetCurrentImageDir() -> g_sCurrentDir
}
g_strSaveStateFilename = strFilename;
g_strSaveStatePathname = strPathname;
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}
const char* Snapshot_GetFilename()
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{
return g_strSaveStateFilename.c_str();
}
const char* Snapshot_GetPath()
{
return g_strSaveStatePath.c_str();
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}
//-----------------------------------------------------------------------------
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static void Snapshot_LoadState_v1() // .aws v1.0.0.1, up to (and including) AppleWin v1.25.0
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{
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std::string strOldImageDir(g_sCurrentDir);
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APPLEWIN_SNAPSHOT_v1* pSS = (APPLEWIN_SNAPSHOT_v1*) new char[sizeof(APPLEWIN_SNAPSHOT_v1)]; // throw's bad_alloc
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try
{
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#if _MSC_VER >= 1600 // static_assert supported from VS2010 (cl.exe v16.00)
static_assert(kSnapshotSize_v1 == sizeof(APPLEWIN_SNAPSHOT_v1), "Save-state v1 struct size mismatch");
#else
// A compile error here means sizeof(APPLEWIN_SNAPSHOT_v1) is wrong, eg. one of the constituent structs has been modified
typedef char VerifySizesAreEqual[kSnapshotSize_v1 == sizeof(APPLEWIN_SNAPSHOT_v1) ? 1 : -1];
#endif
if (kSnapshotSize_v1 != sizeof(APPLEWIN_SNAPSHOT_v1))
throw std::string("Save-state v1 struct size mismatch");
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SetCurrentImageDir(g_strSaveStatePath.c_str()); // Allow .dsk's load without prompting
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memset(pSS, 0, sizeof(APPLEWIN_SNAPSHOT_v1));
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//
HANDLE hFile = CreateFile( g_strSaveStatePathname.c_str(),
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GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(hFile == INVALID_HANDLE_VALUE)
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throw std::string("File not found: ") + g_strSaveStatePathname;
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DWORD dwBytesRead;
BOOL bRes = ReadFile( hFile,
pSS,
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sizeof(APPLEWIN_SNAPSHOT_v1),
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&dwBytesRead,
NULL);
CloseHandle(hFile);
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if(!bRes || (dwBytesRead != sizeof(APPLEWIN_SNAPSHOT_v1)))
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// File size wrong: probably because of version mismatch or corrupt file
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throw std::string("File size mismatch");
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if(pSS->Hdr.dwTag != AW_SS_TAG)
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throw std::string("File corrupt");
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if(pSS->Hdr.dwVersion != MAKE_VERSION(1,0,0,1))
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throw std::string("Version mismatch");
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// TO DO: Verify checksum
//
// Reset all sub-systems
MemReset();
DiskReset();
KeybReset();
VideoResetState();
MB_Reset();
//
// Apple2 unit
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//
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SS_CPU6502& CPU = pSS->Apple2Unit.CPU6502;
CpuSetSnapshot_v1(CPU.A, CPU.X, CPU.Y, CPU.P, CPU.S, CPU.PC, CPU.nCumulativeCycles);
SS_IO_Comms& SSC = pSS->Apple2Unit.Comms;
sg_SSC.SetSnapshot_v1(SSC.baudrate, SSC.bytesize, SSC.commandbyte, SSC.comminactivity, SSC.controlbyte, SSC.parity, SSC.stopbits);
JoySetSnapshot_v1(pSS->Apple2Unit.Joystick.nJoyCntrResetCycle);
KeybSetSnapshot_v1(pSS->Apple2Unit.Keyboard.nLastKey);
SpkrSetSnapshot_v1(pSS->Apple2Unit.Speaker.nSpkrLastCycle);
VideoSetSnapshot_v1(pSS->Apple2Unit.Video.bAltCharSet, pSS->Apple2Unit.Video.dwVidMode);
MemSetSnapshot_v1(pSS->Apple2Unit.Memory.dwMemMode, pSS->Apple2Unit.Memory.bLastWriteRam, pSS->Apple2Unit.Memory.nMemMain, pSS->Apple2Unit.Memory.nMemAux);
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//
//
// Slot4: Mockingboard
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MB_SetSnapshot_v1(&pSS->Mockingboard1, 4);
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//
// Slot5: Mockingboard
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MB_SetSnapshot_v1(&pSS->Mockingboard2, 5);
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//
// Slot6: Disk][
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DiskSetSnapshot_v1(&pSS->Disk2);
SetLoadedSaveStateFlag(true);
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MemUpdatePaging(TRUE);
// NB. g_Apple2Type doesn't change for v1, but replicate this (like v2)
VideoReinitialize(); // g_CharsetType changed
FrameUpdateApple2Type();
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}
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catch(std::string szMessage)
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{
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MessageBox( g_hFrameWindow,
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szMessage.c_str(),
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TEXT("Load State"),
MB_ICONEXCLAMATION | MB_SETFOREGROUND);
SetCurrentImageDir(strOldImageDir.c_str());
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PostMessage(g_hFrameWindow, WM_USER_RESTART, 0, 0); // Power-cycle VM (undoing all the new state just loaded)
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}
delete [] pSS;
}
//-----------------------------------------------------------------------------
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static HANDLE m_hFile = INVALID_HANDLE_VALUE;
static CConfigNeedingRestart m_ConfigNew;
static std::string GetSnapshotUnitApple2Name(void)
{
static const std::string name("Apple2");
return name;
}
static std::string GetSnapshotUnitSlotsName(void)
{
static const std::string name("Slots");
return name;
}
#define SS_YAML_KEY_MODEL "Model"
#define SS_YAML_VALUE_APPLE2 "Apple]["
#define SS_YAML_VALUE_APPLE2PLUS "Apple][+"
#define SS_YAML_VALUE_APPLE2E "Apple//e"
#define SS_YAML_VALUE_APPLE2EENHANCED "Enhanced Apple//e"
#define SS_YAML_VALUE_APPLE2C "Apple2c"
#define SS_YAML_VALUE_PRAVETS82 "Pravets82"
#define SS_YAML_VALUE_PRAVETS8M "Pravets8M"
#define SS_YAML_VALUE_PRAVETS8A "Pravets8A"
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#define SS_YAML_VALUE_TK30002E "TK3000//e"
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static eApple2Type ParseApple2Type(std::string type)
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{
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if (type == SS_YAML_VALUE_APPLE2) return A2TYPE_APPLE2;
else if (type == SS_YAML_VALUE_APPLE2PLUS) return A2TYPE_APPLE2PLUS;
else if (type == SS_YAML_VALUE_APPLE2E) return A2TYPE_APPLE2E;
else if (type == SS_YAML_VALUE_APPLE2EENHANCED) return A2TYPE_APPLE2EENHANCED;
else if (type == SS_YAML_VALUE_APPLE2C) return A2TYPE_APPLE2C;
else if (type == SS_YAML_VALUE_PRAVETS82) return A2TYPE_PRAVETS82;
else if (type == SS_YAML_VALUE_PRAVETS8M) return A2TYPE_PRAVETS8M;
else if (type == SS_YAML_VALUE_PRAVETS8A) return A2TYPE_PRAVETS8A;
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else if (type == SS_YAML_VALUE_TK30002E) return A2TYPE_TK30002E;
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throw std::string("Load: Unknown Apple2 type");
}
static std::string GetApple2TypeAsString(void)
{
switch ( GetApple2Type() )
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{
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case A2TYPE_APPLE2: return SS_YAML_VALUE_APPLE2;
case A2TYPE_APPLE2PLUS: return SS_YAML_VALUE_APPLE2PLUS;
case A2TYPE_APPLE2E: return SS_YAML_VALUE_APPLE2E;
case A2TYPE_APPLE2EENHANCED:return SS_YAML_VALUE_APPLE2EENHANCED;
case A2TYPE_APPLE2C: return SS_YAML_VALUE_APPLE2C;
case A2TYPE_PRAVETS82: return SS_YAML_VALUE_PRAVETS82;
case A2TYPE_PRAVETS8M: return SS_YAML_VALUE_PRAVETS8M;
case A2TYPE_PRAVETS8A: return SS_YAML_VALUE_PRAVETS8A;
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case A2TYPE_TK30002E: return SS_YAML_VALUE_TK30002E;
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default:
throw std::string("Save: Unknown Apple2 type");
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}
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}
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//---
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static UINT ParseFileHdr(void)
{
std::string scalar;
if (!yamlHelper.GetScalar(scalar))
throw std::string(SS_YAML_KEY_FILEHDR ": Failed to find scalar");
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if (scalar != SS_YAML_KEY_FILEHDR)
throw std::string("Failed to find file header");
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yamlHelper.GetMapStartEvent();
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YamlLoadHelper yamlLoadHelper(yamlHelper);
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//
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std::string value = yamlLoadHelper.LoadString(SS_YAML_KEY_TAG);
if (value != SS_YAML_VALUE_AWSS)
{
//printf("%s: Bad tag (%s) - expected %s\n", SS_YAML_KEY_FILEHDR, value.c_str(), SS_YAML_VALUE_AWSS);
throw std::string(SS_YAML_KEY_FILEHDR ": Bad tag");
}
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return yamlLoadHelper.LoadUint(SS_YAML_KEY_VERSION);
}
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//---
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static void ParseUnitApple2(YamlLoadHelper& yamlLoadHelper, UINT version)
{
if (version != UNIT_APPLE2_VER)
throw std::string(SS_YAML_KEY_UNIT ": Apple2: Version mismatch");
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std::string model = yamlLoadHelper.LoadString(SS_YAML_KEY_MODEL);
SetApple2Type( ParseApple2Type(model) ); // NB. Sets default main CPU type
m_ConfigNew.m_Apple2Type = GetApple2Type();
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CpuLoadSnapshot(yamlLoadHelper); // NB. Overrides default main CPU type
m_ConfigNew.m_CpuType = GetMainCpu();
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JoyLoadSnapshot(yamlLoadHelper);
KeybLoadSnapshot(yamlLoadHelper);
SpkrLoadSnapshot(yamlLoadHelper);
VideoLoadSnapshot(yamlLoadHelper);
MemLoadSnapshot(yamlLoadHelper);
// g_Apple2Type may've changed: so redraw frame (title, buttons, leds, etc)
VideoReinitialize(); // g_CharsetType changed
FrameUpdateApple2Type();
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}
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//---
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static void ParseSlots(YamlLoadHelper& yamlLoadHelper, UINT version)
{
if (version != UNIT_SLOTS_VER)
throw std::string(SS_YAML_KEY_UNIT ": Slots: Version mismatch");
while (1)
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{
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std::string scalar = yamlLoadHelper.GetMapNextSlotNumber();
if (scalar.empty())
break; // done all slots
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const int slot = strtoul(scalar.c_str(), NULL, 10); // NB. aux slot supported as a different "unit"
if (slot < 1 || slot > 7)
throw std::string("Slots: Invalid slot #: ") + scalar;
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yamlLoadHelper.GetSubMap(scalar);
std::string card = yamlLoadHelper.LoadString(SS_YAML_KEY_CARD);
UINT version = yamlLoadHelper.LoadUint(SS_YAML_KEY_VERSION);
if (!yamlLoadHelper.GetSubMap(std::string(SS_YAML_KEY_STATE)))
throw std::string(SS_YAML_KEY_UNIT ": Expected sub-map name: " SS_YAML_KEY_STATE);
bool bIsCardSupported = true;
SS_CARDTYPE type = CT_Empty;
bool bRes = false;
if (card == Printer_GetSnapshotCardName())
{
bRes = Printer_LoadSnapshot(yamlLoadHelper, slot, version);
type = CT_GenericPrinter;
}
else if (card == sg_SSC.GetSnapshotCardName())
{
bRes = sg_SSC.LoadSnapshot(yamlLoadHelper, slot, version);
type = CT_SSC;
}
else if (card == sg_Mouse.GetSnapshotCardName())
{
bRes = sg_Mouse.LoadSnapshot(yamlLoadHelper, slot, version);
type = CT_MouseInterface;
}
else if (card == Z80_GetSnapshotCardName())
{
bRes = Z80_LoadSnapshot(yamlLoadHelper, slot, version);
type = CT_Z80;
}
else if (card == MB_GetSnapshotCardName())
{
bRes = MB_LoadSnapshot(yamlLoadHelper, slot, version);
type = CT_MockingboardC;
}
else if (card == Phasor_GetSnapshotCardName())
{
bRes = Phasor_LoadSnapshot(yamlLoadHelper, slot, version);
type = CT_Phasor;
}
else if (card == DiskGetSnapshotCardName())
{
bRes = DiskLoadSnapshot(yamlLoadHelper, slot, version);
type = CT_Disk2;
}
else if (card == HD_GetSnapshotCardName())
{
bRes = HD_LoadSnapshot(yamlLoadHelper, slot, version, g_strSaveStatePath);
m_ConfigNew.m_bEnableHDD = true;
type = CT_GenericHDD;
}
else
{
bIsCardSupported = false;
throw std::string("Slots: Unknown card: " + card); // todo: don't throw - just ignore & continue
}
if (bRes && bIsCardSupported)
{
m_ConfigNew.m_Slot[slot] = type;
}
yamlLoadHelper.PopMap();
yamlLoadHelper.PopMap();
}
}
//---
static void ParseUnit(void)
{
yamlHelper.GetMapStartEvent();
YamlLoadHelper yamlLoadHelper(yamlHelper);
std::string unit = yamlLoadHelper.LoadString(SS_YAML_KEY_TYPE);
UINT version = yamlLoadHelper.LoadUint(SS_YAML_KEY_VERSION);
if (!yamlLoadHelper.GetSubMap(std::string(SS_YAML_KEY_STATE)))
throw std::string(SS_YAML_KEY_UNIT ": Expected sub-map name: " SS_YAML_KEY_STATE);
if (unit == GetSnapshotUnitApple2Name())
{
ParseUnitApple2(yamlLoadHelper, version);
}
else if (unit == MemGetSnapshotUnitAuxSlotName())
{
MemLoadSnapshotAux(yamlLoadHelper, version);
}
else if (unit == GetSnapshotUnitSlotsName())
{
ParseSlots(yamlLoadHelper, version);
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}
else
{
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throw std::string(SS_YAML_KEY_UNIT ": Unknown type: " ) + unit;
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}
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}
static void Snapshot_LoadState_v2(void)
{
try
{
int res = yamlHelper.InitParser( g_strSaveStatePathname.c_str() );
if (!res)
throw std::string("Failed to initialize parser or open file"); // TODO: disambiguate
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UINT version = ParseFileHdr();
if (version != SS_FILE_VER)
throw std::string("Version mismatch");
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//
CConfigNeedingRestart ConfigOld;
ConfigOld.m_Slot[1] = CT_GenericPrinter; // fixme
ConfigOld.m_Slot[2] = CT_SSC; // fixme
//ConfigOld.m_Slot[3] = CT_Uthernet; // todo
ConfigOld.m_Slot[6] = CT_Disk2; // fixme
ConfigOld.m_Slot[7] = ConfigOld.m_bEnableHDD ? CT_GenericHDD : CT_Empty; // fixme
//ConfigOld.m_SlotAux = ?; // fixme
for (UINT i=0; i<NUM_SLOTS; i++)
m_ConfigNew.m_Slot[i] = CT_Empty;
m_ConfigNew.m_SlotAux = CT_Empty;
m_ConfigNew.m_bEnableHDD = false;
//m_ConfigNew.m_bEnableTheFreezesF8Rom = ?; // todo: when support saving config
//m_ConfigNew.m_bEnhanceDisk = ?; // todo: when support saving config
MemReset();
PravetsReset();
DiskReset();
KeybReset();
VideoResetState();
MB_Reset();
#ifdef USE_SPEECH_API
g_Speech.Reset();
#endif
sg_Mouse.Uninitialize();
sg_Mouse.Reset();
HD_SetEnabled(false);
std::string scalar;
while(yamlHelper.GetScalar(scalar))
{
if (scalar == SS_YAML_KEY_UNIT)
ParseUnit();
else
throw std::string("Unknown top-level scalar: " + scalar);
}
SetLoadedSaveStateFlag(true);
// NB. The following disparity should be resolved:
// . A change in h/w via the Configuration property sheets results in a the VM completely restarting (via WM_USER_RESTART)
// . A change in h/w via loading a save-state avoids this VM restart
// The latter is the desired approach (as the former needs a "power-on" / F2 to start things again)
sg_PropertySheet.ApplyNewConfig(m_ConfigNew, ConfigOld);
MemInitializeROM();
MemInitializeCustomF8ROM();
MemInitializeIO();
MemUpdatePaging(TRUE);
}
catch(std::string szMessage)
{
MessageBox( g_hFrameWindow,
szMessage.c_str(),
TEXT("Load State"),
MB_ICONEXCLAMATION | MB_SETFOREGROUND);
PostMessage(g_hFrameWindow, WM_USER_RESTART, 0, 0); // Power-cycle VM (undoing all the new state just loaded)
}
yamlHelper.FinaliseParser();
}
void Snapshot_LoadState()
{
const std::string ext_aws = (".aws");
const size_t pos = g_strSaveStatePathname.size() - ext_aws.size();
if (g_strSaveStatePathname.find(ext_aws, pos) != std::string::npos) // find ".aws" at end of pathname
{
Snapshot_LoadState_v1();
return;
}
Snapshot_LoadState_v2();
}
//-----------------------------------------------------------------------------
// todo:
// . Uthernet card
void Snapshot_SaveState(void)
{
try
{
YamlSaveHelper yamlSaveHelper(g_strSaveStatePathname);
yamlSaveHelper.FileHdr(SS_FILE_VER);
// Unit: Apple2
{
yamlSaveHelper.UnitHdr(GetSnapshotUnitApple2Name(), UNIT_APPLE2_VER);
YamlSaveHelper::Label state(yamlSaveHelper, "%s:\n", SS_YAML_KEY_STATE);
yamlSaveHelper.Save("%s: %s\n", SS_YAML_KEY_MODEL, GetApple2TypeAsString().c_str());
CpuSaveSnapshot(yamlSaveHelper);
JoySaveSnapshot(yamlSaveHelper);
KeybSaveSnapshot(yamlSaveHelper);
SpkrSaveSnapshot(yamlSaveHelper);
VideoSaveSnapshot(yamlSaveHelper);
MemSaveSnapshot(yamlSaveHelper);
}
// Unit: Aux slot
MemSaveSnapshotAux(yamlSaveHelper);
// Unit: Slots
{
yamlSaveHelper.UnitHdr(GetSnapshotUnitSlotsName(), UNIT_SLOTS_VER);
YamlSaveHelper::Label state(yamlSaveHelper, "%s:\n", SS_YAML_KEY_STATE);
Printer_SaveSnapshot(yamlSaveHelper);
sg_SSC.SaveSnapshot(yamlSaveHelper);
sg_Mouse.SaveSnapshot(yamlSaveHelper);
if (g_Slot4 == CT_Z80)
Z80_SaveSnapshot(yamlSaveHelper, 4);
if (g_Slot5 == CT_Z80)
Z80_SaveSnapshot(yamlSaveHelper, 5);
if (g_Slot4 == CT_MockingboardC)
MB_SaveSnapshot(yamlSaveHelper, 4);
if (g_Slot5 == CT_MockingboardC)
MB_SaveSnapshot(yamlSaveHelper, 5);
if (g_Slot4 == CT_Phasor)
Phasor_SaveSnapshot(yamlSaveHelper, 4);
DiskSaveSnapshot(yamlSaveHelper);
HD_SaveSnapshot(yamlSaveHelper);
}
}
catch(std::string szMessage)
{
MessageBox( g_hFrameWindow,
szMessage.c_str(),
TEXT("Save State"),
MB_ICONEXCLAMATION | MB_SETFOREGROUND);
}
2006-02-25 20:50:29 +00:00
}
//-----------------------------------------------------------------------------
void Snapshot_Startup()
{
static bool bDone = false;
if(!g_bSaveStateOnExit || bDone)
return;
Snapshot_LoadState();
bDone = true;
}
void Snapshot_Shutdown()
{
static bool bDone = false;
if(!g_bSaveStateOnExit || bDone)
return;
Snapshot_SaveState();
bDone = true;
}