544 lines
13 KiB
C#
544 lines
13 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using Be.Windows.Forms;
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using Mesen.GUI.Forms;
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namespace Mesen.GUI.Debugger
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{
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public partial class frmEditHeader : BaseConfigForm
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{
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public frmEditHeader()
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{
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InitializeComponent();
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NesHeader header = NesHeader.FromBytes(InteropEmu.DebugGetNesHeader());
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Entity = header;
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AddBinding("MapperId", txtMapperId, eNumberFormat.Decimal);
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AddBinding("SubmapperId", txtSubmapperId, eNumberFormat.Decimal);
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AddBinding("Mirroring", cboMirroringType);
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AddBinding("System", cboSystem);
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AddBinding("VsPpu", cboVsPpuType);
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AddBinding("HasBattery", chkBattery);
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AddBinding("HasTrainer", chkTrainer);
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AddBinding("PrgRom", txtPrgRomSize, eNumberFormat.Decimal);
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AddBinding("ChrRom", txtChrRomSize, eNumberFormat.Decimal);
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AddBinding("WorkRam", cboWorkRam);
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AddBinding("SaveRam", cboSaveRam);
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AddBinding("ChrRam", cboChrRam);
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AddBinding("ChrRamBattery", cboChrRamBattery);
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AddBinding("IsNes20", radNes2, radiNes);
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UpdateUI();
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UpdateVsDropdown();
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}
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protected override void OnFormClosing(FormClosingEventArgs e)
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{
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if(this.DialogResult == DialogResult.OK) {
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using(SaveFileDialog sfd = new SaveFileDialog()) {
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sfd.Filter = "NES roms (*.nes)|*.nes";
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sfd.FileName = InteropEmu.GetRomInfo().GetRomName() + ".nes";
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if(sfd.ShowDialog() == DialogResult.OK) {
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InteropEmu.DebugSaveRomToDisk(sfd.FileName, ((NesHeader)Entity).ToBytes());
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} else {
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e.Cancel = true;
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}
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}
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}
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base.OnFormClosing(e);
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}
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protected override void OnShown(EventArgs e)
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{
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base.OnShown(e);
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btnOK.Text = "Save As";
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btnOK.Image = Mesen.GUI.Properties.Resources.Floppy;
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btnOK.TextImageRelation = TextImageRelation.ImageBeforeText;
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btnOK.AutoSize = true;
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}
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protected override bool ValidateInput()
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{
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UpdateObject();
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NesHeader header = Entity as NesHeader;
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if((header.PrgRom % 16) != 0) {
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lblError.Text = "Error: PRG ROM size must be a multiple of 16 KB";
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lblError.Visible = true;
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return false;
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}
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if((header.ChrRom % 8) != 0) {
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lblError.Text = "Error: CHR ROM size must be a multiple of 8 KB";
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lblError.Visible = true;
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return false;
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}
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if(header.IsNes20) {
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if(header.MapperId >= 4096) {
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lblError.Text = "Error: Mapper ID must be lower than 4096";
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lblError.Visible = true;
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return false;
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}
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if(header.SubmapperId >= 16) {
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lblError.Text = "Error: Submapper ID must be lower than 16";
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lblError.Visible = true;
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return false;
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}
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if(header.ChrRom >= 32768) {
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lblError.Text = "Error: CHR ROM size must be lower than 32768 KB";
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lblError.Visible = true;
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return false;
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}
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if(header.PrgRom >= 65536) {
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lblError.Text = "Error: PRG ROM size must be lower than 65536 KB";
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lblError.Visible = true;
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return false;
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}
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} else {
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if(header.MapperId >= 256) {
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lblError.Text = "Error: Mapper ID must be lower than 256 ";
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lblError.Visible = true;
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return false;
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}
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if(header.ChrRom >= 2048) {
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lblError.Text = "Error: CHR ROM size must be lower than 2048 KB";
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lblError.Visible = true;
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return false;
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}
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if(header.PrgRom >= 4096) {
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lblError.Text = "Error: PRG ROM size must be lower than 4096 KB";
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lblError.Visible = true;
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return false;
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}
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}
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lblError.Visible = false;
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hexBox.ByteProvider = new StaticByteProvider(header.ToBytes());
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return base.ValidateInput();
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}
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private void cboSaveRam_SelectedIndexChanged(object sender, EventArgs e)
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{
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chkBattery.Enabled = cboSaveRam.SelectedIndex == 0 && cboChrRamBattery.SelectedIndex == 0;
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if(!chkBattery.Enabled) {
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chkBattery.Checked = true;
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}
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}
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private void UpdateVsDropdown()
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{
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bool isVsSystem = cboSystem.GetEnumValue<TvSystem>() == TvSystem.VsSystem;
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cboVsPpuType.Visible = isVsSystem;
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lblVsPpuType.Visible = isVsSystem;
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if(!isVsSystem) {
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cboVsPpuType.SelectedIndex = 0;
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}
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}
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private void cboSystem_SelectedIndexChanged(object sender, EventArgs e)
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{
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UpdateVsDropdown();
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}
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private void radVersion_CheckedChanged(object sender, EventArgs e)
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{
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cboChrRam.Enabled = radNes2.Checked;
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cboChrRamBattery.Enabled = radNes2.Checked;
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cboSaveRam.Enabled = radNes2.Checked;
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cboWorkRam.Enabled = radNes2.Checked;
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cboVsPpuType.Enabled = radNes2.Checked;
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txtSubmapperId.Enabled = radNes2.Checked;
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if(!cboChrRam.Enabled) {
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cboChrRam.SelectedIndex = 0;
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}
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if(!cboChrRamBattery.Enabled) {
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cboChrRamBattery.SelectedIndex = 0;
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}
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if(!cboSaveRam.Enabled) {
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cboSaveRam.SelectedIndex = 0;
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}
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if(!cboWorkRam.Enabled) {
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cboWorkRam.SelectedIndex = 0;
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}
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if(!cboVsPpuType.Enabled) {
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cboVsPpuType.SelectedIndex = 0;
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}
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if(!txtSubmapperId.Enabled) {
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txtSubmapperId.Text = "0";
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}
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}
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private class NesHeader
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{
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public bool IsNes20;
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public uint MapperId;
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public uint SubmapperId;
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public uint PrgRom;
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public uint ChrRom;
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public MirroringType Mirroring;
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public TvSystem System;
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public bool HasTrainer;
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public bool HasBattery;
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public VsPpuType VsPpu;
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public MemorySizes WorkRam = MemorySizes.None;
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public MemorySizes SaveRam = MemorySizes.None;
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public MemorySizes ChrRam = MemorySizes.None;
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public MemorySizes ChrRamBattery = MemorySizes.None;
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public byte[] ToBytes()
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{
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byte[] header = new byte[16];
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header[0] = 0x4E;
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header[1] = 0x45;
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header[2] = 0x53;
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header[3] = 0x1A;
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uint prgRomValue = PrgRom / 16;
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uint chrRomValue = ChrRom / 8;
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if(IsNes20) {
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//NES 2.0
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header[4] = (byte)(prgRomValue);
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header[5] = (byte)(chrRomValue);
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header[6] = (byte)(
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((byte)(MapperId & 0x0F) << 4) |
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(byte)Mirroring | (HasTrainer ? 0x04 : 0x00) | (HasBattery ? 0x02 : 0x00)
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);
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header[7] = (byte)(
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((byte)MapperId & 0xF0) |
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(byte)(System == TvSystem.VsSystem ? 0x01 : 0x00) | (System == TvSystem.Playchoice ? 0x02 : 0x00) |
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0x08 //Enable NES 2.0 header
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);
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header[8] = (byte)(((SubmapperId & 0x0F) << 4) | ((MapperId & 0xF00) >> 8));
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header[9] = (byte)(((prgRomValue & 0xF00) >> 8) | ((chrRomValue & 0xF00) >> 4));
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header[10] = (byte)((byte)WorkRam | ((byte)SaveRam) << 4);
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header[11] = (byte)((byte)ChrRam | ((byte)ChrRamBattery) << 4);
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switch(System) {
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default:
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case TvSystem.Ntsc:
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header[12] = 0;
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break;
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case TvSystem.Pal:
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header[12] = 1;
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break;
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case TvSystem.NtscAndPal:
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header[12] = 2;
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break;
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}
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header[13] = (byte)VsPpu;
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} else {
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//iNES
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if(prgRomValue == 0x100) {
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header[4] = 0;
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} else {
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header[4] = (byte)(prgRomValue);
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}
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header[5] = (byte)(chrRomValue);
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header[6] = (byte)(
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((byte)(MapperId & 0x0F) << 4) |
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(byte)Mirroring | (HasTrainer ? 0x04 : 0x00) | (HasBattery ? 0x02 : 0x00)
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);
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header[7] = (byte)(
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((byte)MapperId & 0xF0) |
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(byte)(System == TvSystem.VsSystem ? 0x01 : 0x00) | (System == TvSystem.Playchoice ? 0x02 : 0x00)
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);
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header[8] = 0;
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header[9] = (byte)(System == TvSystem.Pal ? 0x01 : 0x00);
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header[10] = 0;
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header[11] = 0;
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header[12] = 0;
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header[13] = 0;
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}
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//Reserved bytes
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header[14] = 0;
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header[15] = 0;
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return header;
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}
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public static NesHeader FromBytes(byte[] bytes)
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{
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BinaryHeader binHeader = new BinaryHeader(bytes);
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NesHeader header = new NesHeader();
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header.IsNes20 = binHeader.GetRomHeaderVersion() == RomHeaderVersion.Nes2_0;
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header.PrgRom = (uint)(binHeader.GetPrgSize() * 16);
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header.ChrRom = (uint)(binHeader.GetChrSize() * 8);
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header.HasTrainer = binHeader.HasTrainer();
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header.HasBattery = binHeader.HasBattery();
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if(binHeader.IsVsSystem()) {
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header.System = TvSystem.VsSystem;
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} else if(binHeader.IsPlaychoice()) {
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header.System = TvSystem.Playchoice;
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} else if(binHeader.IsPalRom()) {
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header.System = TvSystem.Pal;
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} else {
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header.System = TvSystem.Ntsc;
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}
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header.Mirroring = binHeader.GetMirroringType();
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header.MapperId = (uint)binHeader.GetMapperID();
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header.SubmapperId = (uint)binHeader.GetSubMapper();
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header.WorkRam = (MemorySizes)binHeader.GetWorkRamSize();
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header.SaveRam = (MemorySizes)binHeader.GetSaveRamSize();
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header.ChrRam = (MemorySizes)binHeader.GetChrRamSize();
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header.ChrRamBattery = (MemorySizes)binHeader.GetSaveChrRamSize();
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header.VsPpu = (VsPpuType)bytes[13];
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return header;
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}
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}
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private class BinaryHeader
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{
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private byte[] _bytes;
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private byte PrgCount;
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private byte ChrCount;
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public BinaryHeader(byte[] bytes)
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{
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_bytes = bytes;
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PrgCount = bytes[4];
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ChrCount = bytes[5];
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}
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public RomHeaderVersion GetRomHeaderVersion()
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{
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if((_bytes[7] & 0x0C) == 0x08) {
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return RomHeaderVersion.Nes2_0;
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} else if((_bytes[7] & 0x0C) == 0x00) {
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return RomHeaderVersion.iNes;
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} else {
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return RomHeaderVersion.OldiNes;
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}
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}
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public int GetMapperID()
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{
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switch(GetRomHeaderVersion()) {
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case RomHeaderVersion.Nes2_0:
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return ((_bytes[8] & 0x0F) << 4) | (_bytes[7] & 0xF0) | (_bytes[6] >> 4);
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default:
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case RomHeaderVersion.iNes:
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return (_bytes[7] & 0xF0) | (_bytes[6] >> 4);
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case RomHeaderVersion.OldiNes:
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return (_bytes[6] >> 4);
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}
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}
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public bool HasBattery()
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|||
|
|
{
|
|||
|
|
return (_bytes[6] & 0x02) == 0x02;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public bool HasTrainer()
|
|||
|
|
{
|
|||
|
|
return (_bytes[6] & 0x04) == 0x04;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public bool IsPalRom()
|
|||
|
|
{
|
|||
|
|
switch(GetRomHeaderVersion()) {
|
|||
|
|
case RomHeaderVersion.Nes2_0:
|
|||
|
|
return (_bytes[12] & 0x01) == 0x01;
|
|||
|
|
case RomHeaderVersion.iNes:
|
|||
|
|
return (_bytes[9] & 0x01) == 0x01;
|
|||
|
|
default:
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public bool IsPlaychoice()
|
|||
|
|
{
|
|||
|
|
switch(GetRomHeaderVersion()) {
|
|||
|
|
case RomHeaderVersion.Nes2_0:
|
|||
|
|
case RomHeaderVersion.iNes:
|
|||
|
|
return (_bytes[7] & 0x02) == 0x02;
|
|||
|
|
default:
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public bool IsVsSystem()
|
|||
|
|
{
|
|||
|
|
switch(GetRomHeaderVersion()) {
|
|||
|
|
case RomHeaderVersion.Nes2_0:
|
|||
|
|
case RomHeaderVersion.iNes:
|
|||
|
|
return (_bytes[7] & 0x01) == 0x01;
|
|||
|
|
default:
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public int GetPrgSize()
|
|||
|
|
{
|
|||
|
|
if(GetRomHeaderVersion() == RomHeaderVersion.Nes2_0) {
|
|||
|
|
return (((_bytes[9] & 0x0F) << 8) | PrgCount);
|
|||
|
|
} else {
|
|||
|
|
if(PrgCount == 0) {
|
|||
|
|
return 256; //0 is a special value and means 256
|
|||
|
|
} else {
|
|||
|
|
return PrgCount;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public int GetChrSize()
|
|||
|
|
{
|
|||
|
|
if(GetRomHeaderVersion() == RomHeaderVersion.Nes2_0) {
|
|||
|
|
return (((_bytes[9] & 0xF0) << 4) | ChrCount);
|
|||
|
|
} else {
|
|||
|
|
return ChrCount;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public int GetWorkRamSize()
|
|||
|
|
{
|
|||
|
|
if(GetRomHeaderVersion() == RomHeaderVersion.Nes2_0) {
|
|||
|
|
return _bytes[10] & 0x0F;
|
|||
|
|
} else {
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public int GetSaveRamSize()
|
|||
|
|
{
|
|||
|
|
if(GetRomHeaderVersion() == RomHeaderVersion.Nes2_0) {
|
|||
|
|
return (_bytes[10] & 0xF0) >> 4;
|
|||
|
|
} else {
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public int GetChrRamSize()
|
|||
|
|
{
|
|||
|
|
if(GetRomHeaderVersion() == RomHeaderVersion.Nes2_0) {
|
|||
|
|
return _bytes[11] & 0x0F;
|
|||
|
|
} else {
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public int GetSaveChrRamSize()
|
|||
|
|
{
|
|||
|
|
if(GetRomHeaderVersion() == RomHeaderVersion.Nes2_0) {
|
|||
|
|
return (_bytes[11] & 0xF0) >> 4;
|
|||
|
|
} else {
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public int GetSubMapper()
|
|||
|
|
{
|
|||
|
|
if(GetRomHeaderVersion() == RomHeaderVersion.Nes2_0) {
|
|||
|
|
return (_bytes[8] & 0xF0) >> 4;
|
|||
|
|
} else {
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public MirroringType GetMirroringType()
|
|||
|
|
{
|
|||
|
|
if((_bytes[6] & 0x08) != 0) {
|
|||
|
|
return MirroringType.FourScreens;
|
|||
|
|
} else {
|
|||
|
|
return (_bytes[6] & 0x01) != 0 ? MirroringType.Vertical : MirroringType.Horizontal;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private enum RomHeaderVersion
|
|||
|
|
{
|
|||
|
|
iNes = 0,
|
|||
|
|
Nes2_0 = 1,
|
|||
|
|
OldiNes = 2
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private enum MirroringType
|
|||
|
|
{
|
|||
|
|
Horizontal = 0,
|
|||
|
|
Vertical = 1,
|
|||
|
|
FourScreens = 8
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private enum TvSystem
|
|||
|
|
{
|
|||
|
|
Ntsc = 0,
|
|||
|
|
Pal = 1,
|
|||
|
|
NtscAndPal = 2,
|
|||
|
|
VsSystem = 3,
|
|||
|
|
Playchoice = 4,
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private enum MemorySizes
|
|||
|
|
{
|
|||
|
|
None = 0,
|
|||
|
|
_128Bytes = 1,
|
|||
|
|
_256Bytes = 2,
|
|||
|
|
_512Bytes = 3,
|
|||
|
|
_1KB = 4,
|
|||
|
|
_2KB = 5,
|
|||
|
|
_4KB = 6,
|
|||
|
|
_8KB = 7,
|
|||
|
|
_16KB = 8,
|
|||
|
|
_32KB = 9,
|
|||
|
|
_64KB = 10,
|
|||
|
|
_128KB = 11,
|
|||
|
|
_256KB = 12,
|
|||
|
|
_512KB = 13,
|
|||
|
|
_1024KB = 14,
|
|||
|
|
Reserved = 15
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private enum VsPpuType
|
|||
|
|
{
|
|||
|
|
RP2C03B = 0,
|
|||
|
|
RP2C03G = 1,
|
|||
|
|
RP2C040001 = 2,
|
|||
|
|
RP2C040002 = 3,
|
|||
|
|
RP2C040003 = 4,
|
|||
|
|
RP2C040004 = 5,
|
|||
|
|
RC2C03B = 6,
|
|||
|
|
RC2C03C = 7,
|
|||
|
|
RC2C0501 = 8,
|
|||
|
|
RC2C0502 = 9,
|
|||
|
|
RC2C0503 = 10,
|
|||
|
|
RC2C0504 = 11,
|
|||
|
|
RC2C0505 = 12,
|
|||
|
|
Undefined = 13,
|
|||
|
|
Undefined2 = 14,
|
|||
|
|
Undefined3 = 15
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|