private static void MEMHardReset()
{
// memory
WRAM = new byte[0x800];
WRAM[0x0008] = 0xF7;
WRAM[0x0008] = 0xF7;
WRAM[0x0009] = 0xEF;
WRAM[0x000A] = 0xDF;
WRAM[0x000F] = 0xBF;
palettes_bank = new byte[] // Miscellaneous, real NES loads values similar to these during power up
{
0x09, 0x01, 0x00, 0x01, 0x00, 0x02, 0x02, 0x0D, 0x08, 0x10, 0x08, 0x24, 0x00, 0x00, 0x04, 0x2C, // Bkg palette
0x09, 0x01, 0x34, 0x03, 0x00, 0x04, 0x00, 0x14, 0x08, 0x3A, 0x00, 0x02, 0x00, 0x20, 0x2C, 0x08 // Spr palette
};
oam_ram = new byte[256];
oam_secondary = new byte[32];
BUS_ADDRESS = 0;
BUS_RW = false;
BUS_RW_P = false;
// Read SRAM if found
Trace.WriteLine("Reading SRAM");
if (File.Exists(SRAMFileName))
{
Stream str = new FileStream(SRAMFileName, FileMode.Open, FileAccess.Read);
byte[] inData = new byte[str.Length];
str.Read(inData, 0, inData.Length);
str.Flush();
str.Close();
byte[] outData = new byte[0];
ZlipWrapper.DecompressData(inData, out outData);
board.LoadSRAM(outData);
Trace.WriteLine("SRAM read successfully.");
}
else
{
Trace.WriteLine("SRAM file not found; rom has no SRAM or file not exist.");
}
board.HardReset();
}
/// <summary>
/// Load current game state from file
/// </summary>
/// <param name="fileName">The complete path to the state file</param>
public void LoadStateAs(string fileName)
{
if (state_is_saving_state)
{
this.EmulationPaused = false;
this.view.WriteNotification("Can't load state while it's saving state !", 120, Color.Red);
return;
}
if (state_is_loading_state)
{
this.EmulationPaused = false;
this.view.WriteNotification("Already loading a state !", 120, Color.Red);
return;
}
state_is_loading_state = true;
// Read the file
Stream stream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
// Decompress
byte[] inData = new byte[stream.Length];
byte[] outData = new byte[0];
stream.Read(inData, 0, inData.Length);
stream.Close();
ZlipWrapper.DecompressData(inData, out outData);
// Create the reader
BinaryReader bin = new BinaryReader(new MemoryStream(outData));
// Read header
byte[] header = new byte[3];
bin.Read(header, 0, header.Length);
if (Encoding.ASCII.GetString(header) != "MNS")
{
this.EmulationPaused = false;
this.view.WriteNotification("Unable load state at slot " + STATESlot + "; Not My Nes State File !", 120, Color.Red);
state_is_loading_state = false;
return;
}
// Read version
if (bin.ReadByte() != state_version)
{
this.EmulationPaused = false;
this.view.WriteNotification("Unable load state at slot " + STATESlot + "; Not compatible state file version !", 120, Color.Red);
state_is_loading_state = false;
return;
}
string sha1 = "";
for (int i = 0; i < this.memory.board.RomSHA1.Length; i += 2)
{
sha1 += (bin.ReadByte()).ToString("X2");
}
if (sha1.ToLower() != this.memory.board.RomSHA1.ToLower())
{
this.EmulationPaused = false;
this.view.WriteNotification("Unable load state at slot " + STATESlot + "; This state file is not for this game; not same SHA1 !", 120, Color.Red);
state_is_loading_state = false;
return;
}
// Read data
#region General
this.emulator.palCyc = bin.ReadByte();
#endregion
#region APU
this.apu.LoadState(bin);
#endregion
#region CPU
this.cpu.LoadState(bin);
#endregion
#region DMA
this.dma.LoadState(bin);
#endregion
#region DMC
this.apu.dmcChannel.LoadState(bin);
#endregion
#region Input
this.input.LoadState(bin);
#endregion
#region Interrupts
this.interrupts.LoadState(bin);
#endregion
#region Memory
this.memory.LoadState(bin);
#endregion
#region Noise
this.apu.noiseChannel.LoadState(bin);
#endregion
#region PPU
this.ppu.LoadState(bin);
#endregion
#region Pulse
this.apu.pulse1Channel.LoadState(bin);
this.apu.pulse2Channel.LoadState(bin);
#endregion
#region Triangle
this.apu.triangleChannel.LoadState(bin);
#endregion
// Finished !
bin.Close();
this.EmulationPaused = false;
state_is_loading_state = false;
this.view.WriteNotification("State loaded from slot " + STATESlot, 120, Color.Green);
}
/// <summary>
/// Load current game state from file
/// </summary>
/// <param name="fileName">The complete path to the state file</param>
public static void LoadStateAs(string fileName)
{
if (state_is_saving_state)
{
EmulationPaused = false;
videoOut.WriteNotification("Can't load state while it's saving state !", 120, Color.Red);
return;
}
if (state_is_loading_state)
{
EmulationPaused = false;
videoOut.WriteNotification("Already loading a state !", 120, Color.Red);
return;
}
if (!File.Exists(fileName))
{
videoOut.WriteNotification("No state found at slot " + STATESlot, 120, Color.Red);
return;
}
state_is_loading_state = true;
// Read the file
Stream stream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
// Decompress
byte[] inData = new byte[stream.Length];
byte[] outData = new byte[0];
stream.Read(inData, 0, inData.Length);
stream.Close();
ZlipWrapper.DecompressData(inData, out outData);
// Create the reader
BinaryReader bin = new BinaryReader(new MemoryStream(outData));
// Read header
byte[] header = new byte[3];
bin.Read(header, 0, header.Length);
if (Encoding.ASCII.GetString(header) != "MNS")
{
EmulationPaused = false;
videoOut.WriteNotification("Unable load state at slot " + STATESlot + "; Not My Nes State File !", 120, Color.Red);
state_is_loading_state = false;
return;
}
// Read version
if (bin.ReadByte() != state_version)
{
EmulationPaused = false;
videoOut.WriteNotification("Unable load state at slot " + STATESlot + "; Not compatible state file version !", 120, Color.Red);
state_is_loading_state = false;
return;
}
string sha1 = "";
for (int i = 0; i < board.RomSHA1.Length; i += 2)
{
sha1 += (bin.ReadByte()).ToString("X2");
}
if (sha1.ToLower() != board.RomSHA1.ToLower())
{
EmulationPaused = false;
videoOut.WriteNotification("Unable load state at slot " + STATESlot + "; This state file is not for this game; not same SHA1 !", 120, Color.Red);
state_is_loading_state = false;
return;
}
// Read data
#region General
palCyc = bin.ReadByte();
#endregion
#region APU
Cycles = bin.ReadInt32();
SequencingMode = bin.ReadBoolean();
CurrentSeq = bin.ReadByte();
isClockingDuration = bin.ReadBoolean();
FrameIrqEnabled = bin.ReadBoolean();
FrameIrqFlag = bin.ReadBoolean();
oddCycle = bin.ReadBoolean();
#endregion
#region CPU
registers.a = bin.ReadByte();
registers.c = bin.ReadBoolean();
registers.d = bin.ReadBoolean();
registers.eah = bin.ReadByte();
registers.eal = bin.ReadByte();
registers.i = bin.ReadBoolean();
registers.n = bin.ReadBoolean();
registers.pch = bin.ReadByte();
registers.pcl = bin.ReadByte();
registers.sph = bin.ReadByte();
registers.spl = bin.ReadByte();
registers.v = bin.ReadBoolean();
registers.x = bin.ReadByte();
registers.y = bin.ReadByte();
registers.z = bin.ReadBoolean();
M = bin.ReadByte();
opcode = bin.ReadByte();
byte_temp = bin.ReadByte();
int_temp = bin.ReadInt32();
int_temp1 = bin.ReadInt32();
dummy = bin.ReadByte();
#endregion
#region DMA
dmaDMCDMAWaitCycles = bin.ReadInt32();
dmaOAMDMAWaitCycles = bin.ReadInt32();
isOamDma = bin.ReadBoolean();
oamdma_i = bin.ReadInt32();
dmaDMCOn = bin.ReadBoolean();
dmaOAMOn = bin.ReadBoolean();
dmaDMC_occurring = bin.ReadBoolean();
dmaOAM_occurring = bin.ReadBoolean();
dmaOAMFinishCounter = bin.ReadInt32();
dmaOamaddress = bin.ReadInt32();
OAMCYCLE = bin.ReadInt32();
latch = bin.ReadByte();
#endregion
#region DMC
DeltaIrqOccur = bin.ReadBoolean();
DMCIrqEnabled = bin.ReadBoolean();
dmc_dmaLooping = bin.ReadBoolean();
dmc_dmaEnabled = bin.ReadBoolean();
dmc_bufferFull = bin.ReadBoolean();
dmc_dmaAddrRefresh = bin.ReadInt32();
dmc_dmaSizeRefresh = bin.ReadInt32();
dmc_dmaSize = bin.ReadInt32();
dmc_dmaBits = bin.ReadInt32();
dmc_dmaByte = bin.ReadByte();
dmc_dmaAddr = bin.ReadInt32();
dmc_dmaBuffer = bin.ReadByte();
dmc_output = bin.ReadByte();
dmc_cycles = bin.ReadInt32();
dmc_freqTimer = bin.ReadInt32();
#endregion
#region Input
PORT0 = bin.ReadInt32();
PORT1 = bin.ReadInt32();
inputStrobe = bin.ReadInt32();
#endregion
#region Interrupts
NMI_Current = bin.ReadBoolean();
NMI_Old = bin.ReadBoolean();
NMI_Detected = bin.ReadBoolean();
IRQFlags = bin.ReadInt32();
IRQ_Detected = bin.ReadBoolean();
interrupt_vector = bin.ReadInt32();
interrupt_suspend_nmi = bin.ReadBoolean();
interrupt_suspend_irq = bin.ReadBoolean();
nmi_enabled = bin.ReadBoolean();
nmi_old = bin.ReadBoolean();
vbl_flag = bin.ReadBoolean();
vbl_flag_temp = bin.ReadBoolean();
#endregion
#region Memory
board.LoadState(bin);
bin.Read(WRAM, 0, WRAM.Length);
bin.Read(palettes_bank, 0, palettes_bank.Length);
bin.Read(oam_ram, 0, oam_ram.Length);
bin.Read(oam_secondary, 0, oam_secondary.Length);
BUS_ADDRESS = bin.ReadInt32();
BUS_RW = bin.ReadBoolean();
BUS_RW_P = bin.ReadBoolean();
temp_4015 = bin.ReadByte();
temp_4016 = bin.ReadByte();
temp_4017 = bin.ReadByte();
#endregion
#region Noise
noz_envelope = bin.ReadInt32();
noz_env_startflag = bin.ReadBoolean();
noz_env_counter = bin.ReadInt32();
noz_env_devider = bin.ReadInt32();
noz_length_counter_halt_flag = bin.ReadBoolean();
noz_constant_volume_flag = bin.ReadBoolean();
noz_volume_decay_time = bin.ReadInt32();
noz_duration_haltRequset = bin.ReadBoolean();
noz_duration_counter = bin.ReadByte();
noz_duration_reloadEnabled = bin.ReadBoolean();
noz_duration_reload = bin.ReadByte();
noz_duration_reloadRequst = bin.ReadBoolean();
noz_mode = bin.ReadBoolean();
noz_shiftRegister = bin.ReadInt32();
noz_feedback = bin.ReadInt32();
noz_frequency = bin.ReadInt32();
noz_cycles = bin.ReadInt32();
#endregion
#region PPU
VClock = bin.ReadInt32();
HClock = bin.ReadInt32();
oddSwap = bin.ReadBoolean();
current_pixel = bin.ReadInt32();
temp = bin.ReadInt32();
temp_comparator = bin.ReadInt32();
bkg_pos = bin.ReadInt32();
spr_pos = bin.ReadInt32();
object0 = bin.ReadInt32();
infront = bin.ReadInt32();
bkgPixel = bin.ReadInt32();
sprPixel = bin.ReadInt32();
bkg_fetch_address = bin.ReadInt32();
bkg_fetch_nametable = bin.ReadByte();
bkg_fetch_attr = bin.ReadByte();
bkg_fetch_bit0 = bin.ReadByte();
bkg_fetch_bit1 = bin.ReadByte();
spr_fetch_address = bin.ReadInt32();
spr_fetch_bit0 = bin.ReadByte();
spr_fetch_bit1 = bin.ReadByte();
spr_fetch_attr = bin.ReadByte();
for (int i = 0; i < spr_zero_buffer.Length; i++)
{
spr_zero_buffer[i] = bin.ReadBoolean();
}
vram_temp = bin.ReadInt32();
vram_address = bin.ReadInt32();
vram_address_temp_access = bin.ReadInt32();
vram_address_temp_access1 = bin.ReadInt32();
vram_increament = bin.ReadInt32();
vram_flipflop = bin.ReadBoolean();
vram_fine = bin.ReadByte();
reg2007buffer = bin.ReadByte();
bkg_enabled = bin.ReadBoolean();
bkg_clipped = bin.ReadBoolean();
bkg_patternAddress = bin.ReadInt32();
spr_enabled = bin.ReadBoolean();
spr_clipped = bin.ReadBoolean();
spr_patternAddress = bin.ReadInt32();
spr_size16 = bin.ReadInt32();
spr_0Hit = bin.ReadBoolean();
spr_overflow = bin.ReadBoolean();
grayscale = bin.ReadInt32();
emphasis = bin.ReadInt32();
ppu_2002_temp = bin.ReadByte();
ppu_2004_temp = bin.ReadByte();
ppu_2007_temp = bin.ReadByte();
oam_address = bin.ReadByte();
oam_fetch_data = bin.ReadByte();
oam_evaluate_slot = bin.ReadByte();
oam_evaluate_count = bin.ReadByte();
oam_fetch_mode = bin.ReadBoolean();
oam_phase_index = bin.ReadByte();
spr_render_i = bin.ReadInt32();
bkg_render_i = bin.ReadInt32();
spr_evaluation_i = bin.ReadInt32();
spr_render_temp_pixel = bin.ReadInt32();
#endregion
#region Pulse 1
sq1_envelope = bin.ReadInt32();
sq1_env_startflag = bin.ReadBoolean();
sq1_env_counter = bin.ReadInt32();
sq1_env_devider = bin.ReadInt32();
sq1_length_counter_halt_flag = bin.ReadBoolean();
sq1_constant_volume_flag = bin.ReadBoolean();
sq1_volume_decay_time = bin.ReadInt32();
sq1_duration_haltRequset = bin.ReadBoolean();
sq1_duration_counter = bin.ReadByte();
sq1_duration_reloadEnabled = bin.ReadBoolean();
sq1_duration_reload = bin.ReadByte();
sq1_duration_reloadRequst = bin.ReadBoolean();
sq1_dutyForm = bin.ReadInt32();
sq1_dutyStep = bin.ReadInt32();
sq1_sweepDeviderPeriod = bin.ReadInt32();
sq1_sweepShiftCount = bin.ReadInt32();
sq1_sweepCounter = bin.ReadInt32();
sq1_sweepEnable = bin.ReadBoolean();
sq1_sweepReload = bin.ReadBoolean();
sq1_sweepNegateFlag = bin.ReadBoolean();
sq1_frequency = bin.ReadInt32();
sq1_sweep = bin.ReadInt32();
sq1_cycles = bin.ReadInt32();
#endregion
#region Pulse 2
sq2_envelope = bin.ReadInt32();
sq2_env_startflag = bin.ReadBoolean();
sq2_env_counter = bin.ReadInt32();
sq2_env_devider = bin.ReadInt32();
sq2_length_counter_halt_flag = bin.ReadBoolean();
sq2_constant_volume_flag = bin.ReadBoolean();
sq2_volume_decay_time = bin.ReadInt32();
sq2_duration_haltRequset = bin.ReadBoolean();
sq2_duration_counter = bin.ReadByte();
sq2_duration_reloadEnabled = bin.ReadBoolean();
sq2_duration_reload = bin.ReadByte();
sq2_duration_reloadRequst = bin.ReadBoolean();
sq2_dutyForm = bin.ReadInt32();
sq2_dutyStep = bin.ReadInt32();
sq2_sweepDeviderPeriod = bin.ReadInt32();
sq2_sweepShiftCount = bin.ReadInt32();
sq2_sweepCounter = bin.ReadInt32();
sq2_sweepEnable = bin.ReadBoolean();
sq2_sweepReload = bin.ReadBoolean();
sq2_sweepNegateFlag = bin.ReadBoolean();
sq2_frequency = bin.ReadInt32();
sq2_sweep = bin.ReadInt32();
sq2_cycles = bin.ReadInt32();
#endregion
#region Triangle
trl_length_counter_halt_flag = bin.ReadBoolean();
trl_duration_haltRequset = bin.ReadBoolean();
trl_duration_counter = bin.ReadByte();
trl_duration_reloadEnabled = bin.ReadBoolean();
trl_duration_reload = bin.ReadByte();
trl_duration_reloadRequst = bin.ReadBoolean();
trl_linearCounter = bin.ReadByte();
trl_linearCounterReload = bin.ReadByte();
trl_step = bin.ReadByte();
trl_linearCounterHalt = bin.ReadBoolean();
trl_halt = bin.ReadBoolean();
trl_frequency = bin.ReadInt32();
trl_cycles = bin.ReadInt32();
#endregion
// Finished !
bin.Close();
EmulationPaused = false;
state_is_loading_state = false;
videoOut.WriteNotification("State loaded from slot " + STATESlot, 120, Color.Green);
}
