NesHawk - implement mapper 198

Assets/gamedb/gamedb.txt

@@ -174,6 +174,11 @@ sha1:D565A9C2B117447C310E4F59E4AFC30DF299EA4F	G	Street Fighter IV (Unl)	NES		boa
 sha1:B9F444FF60F60C177EEEC8671BEC3731B0F6FE49	G	Tang Mu Li Xian Ji (Ch)	NES		board=MAPPER223;WRAM=16
 sha1:EBD2B4A4067FD4A8F0D0ABD34C8FF1AF520D1EED	G	Super Blaster VII Turbo 28 (Unl)	NES		board=MAPPER083;prg=512;chr=256;wram=0;
 sha1:40409FEC8249EFDB772E6FFB2DCD41860C6CCA23	G	Pegasus 4-in-1 (Unl)	NES		board=MAPPER232
+sha1:7EF667D9BF107B6512565177B9C62081077558F5	T	Tenchi wo Kurau II - Shokatsu Koumei Den (J) [T+Chi]	NES		board=MAPPER198
+sha1:92CC033C1255F119B3A566EDCA10140C014FA479	T	Tenchi wo Kurau II - Shokatsu Koumei Den (J) [T+Chi][a1]	NES		board=MAPPER198
+sha1:EEF617A022B8E45E0BDE088FED654C89AD4FAABF	T	Tenchi wo Kurau II - Shokatsu Koumei Den (J) [T+Chi][a2]	NES		board=MAPPER198
+sha1:3D49A357362160B16F03CC4BE7D8EAFB7108708D	T	Tenchi wo Kurau II - Shokatsu Koumei Den (J) [T+Chi(Trad)]	NES		board=MAPPER198
+sha1:7FB334A7375E17EA157415193DEE4FACC4EC2B34	T	Tenchi wo Kurau II - Shokatsu Koumei Den (J) [T+Chi(Simp)]	NES		board=MAPPER198
 
 ;;;;;;;;;;;;;;;;;;;-----------------------------------------------------------------------
 

BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj

@@ -691,6 +691,7 @@
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper195_CW.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper196.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper197.cs" />
+    <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper198.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper199.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper205.cs" />
     <Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper208.cs" />

BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper198.cs

@@ -0,0 +1,54 @@
+using BizHawk.Common;
+
+namespace BizHawk.Emulation.Cores.Nintendo.NES
+{
+	public class Mapper198 : MMC3Board_Base
+	{
+
+		public override bool Configure(NES.EDetectionOrigin origin)
+		{
+			switch (Cart.board_type)
+			{
+				case "MAPPER198":
+					break;
+				default:
+					return false;
+			}
+
+			BaseSetup();
+			prg_mask = 1024 / 8 - 1;
+			return true;
+		}
+
+		protected override int Get_PRGBank_8K(int addr)
+		{
+			var val = base.Get_PRGBank_8K(addr);
+			if (val >= 0x50)
+			{
+				return val & 0x4F;
+			}
+
+			return val;
+		}
+
+		public override byte ReadEXP(int addr)
+		{
+			if (addr >= 0x1000)
+			{
+				return WRAM[addr - 0x1000];
+			}
+
+			return base.ReadEXP(addr);
+		}
+
+		public override void WriteEXP(int addr, byte value)
+		{
+			if (addr >= 0x1000)
+			{
+				WRAM[addr - 0x1000] = value;
+			}
+
+			base.WriteEXP(addr, value);
+		}
+	}
+}