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More readable device states.

master
Nabile Rahmani 2018-12-11 20:01:04 +01:00
parent ca014d07d6
commit 6fc595dc27
2 changed files with 33 additions and 10 deletions
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37
DotN64/PIF/PeripheralInterface.CIC.cs
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@ -2,7 +2,7 @@
{
public partial class PeripheralInterface
{
public static class CIC
private static class CIC
{
#region Methods
private static uint ComputeCRC32(byte[] data, int offset, int length)
@ -35,23 +35,44 @@
return c ^ 0xFFFFFFFF;
}
public static uint GetSeed(byte[] data, int offset = Cartridge.HeaderSize, int length = Cartridge.BootstrapSize)
public static DeviceState GetDeviceState(byte[] data, int offset = Cartridge.HeaderSize, int length = Cartridge.BootstrapSize)
{
switch (ComputeCRC32(data, offset, length))
{
case 0x6170A4A1: // NUS-6101.
case 0x009E9EA3: // NUS-7102.
return 0x00043F3F;
return new DeviceState
{
IPL2Seed = 0x3F,
IPL3Seed = 0x3F,
Version = 1
};
case 0x90BB6CB5: // NUS-6102.
return 0x00003F3F;
return new DeviceState
{
IPL2Seed = 0x3F,
IPL3Seed = 0x3F
};
case 0x0B050EE0: // NUS-6103.
return 0x0000783F;
return new DeviceState
{
IPL2Seed = 0x3F,
IPL3Seed = 0x78
};
case 0x98BC2C86: // NUS-6105.
return 0x0000913F;
return new DeviceState
{
IPL2Seed = 0x3F,
IPL3Seed = 0x91
};
case 0xACC8580A: // NUS-6106.
return 0x0000853F;
return new DeviceState
{
IPL2Seed = 0x3F,
IPL3Seed = 0x85
};
case 0x0E018159: // NUS-8303.
return 0x0000DD00;
return new DeviceState { IPL3Seed = 0xDD };
default:
return 0;
}

6
DotN64/PIF/PeripheralInterface.cs
View File

@ -140,11 +140,13 @@ namespace DotN64
private void DetectDevice()
{
if (nintendo64.Cartridge?.ROM.Length >= Cartridge.HeaderSize + Cartridge.BootstrapSize)
DeviceStateFlags = CIC.GetSeed(nintendo64.Cartridge.ROM);
DeviceStateFlags = CIC.GetDeviceState(nintendo64.Cartridge.ROM);
else
DeviceStateFlags = new DeviceState
{
ROM = DeviceState.ROMType.DiskDrive
IPL3Seed = 0xDD, // TODO: Read the 64DD IPL header to set the seed based on region code.
ROM = DeviceState.ROMType.DiskDrive,
Reset = DeviceState.ResetType.NMI
};
}