From aaa0da85fded3c812e7500c6b2f9c4ac8c7bbc7f Mon Sep 17 00:00:00 2001
From: Anthony Konzel <saxxonpike@gmail.com>
Date: Sun, 6 Mar 2016 16:31:29 -0600
Subject: [PATCH] C64: Prophet64 and Action Replay mapper (incomplete) added.
---
.../BizHawk.Emulation.Cores.csproj | 2 +
.../Computers/Commodore64/C64.Motherboard.cs | 4 +-
.../Commodore64/C64.MotherboardInterface.cs | 5 +
.../Commodore64/Cartridge/CartridgeDevice.cs | 44 +++--
.../Commodore64/Cartridge/CartridgePort.cs | 6 +-
.../Commodore64/Cartridge/Mapper0001.cs | 154 ++++++++++++++++++
.../Commodore64/Cartridge/Mapper000A.cs | 10 +-
.../Commodore64/Cartridge/Mapper002B.cs | 80 +++++++++
8 files changed, 280 insertions(+), 25 deletions(-)
create mode 100644 BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper0001.cs
create mode 100644 BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper002B.cs
diff --git a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
index b8961e5eb6..cdbc943f47 100644
--- a/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
+++ b/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
@@ -209,6 +209,7 @@
<Compile Include="Computers\Commodore64\C64Util.cs" />
<Compile Include="Computers\Commodore64\Cartridge\Mapper0000.cs" />
<Compile Include="Computers\Commodore64\C64.Input.cs" />
+ <Compile Include="Computers\Commodore64\Cartridge\Mapper0001.cs" />
<Compile Include="Computers\Commodore64\Cartridge\Mapper0005.cs" />
<Compile Include="Computers\Commodore64\Cartridge\Mapper000A.cs" />
<Compile Include="Computers\Commodore64\Cartridge\Mapper000B.cs" />
@@ -217,6 +218,7 @@
<Compile Include="Computers\Commodore64\Cartridge\Mapper0012.cs" />
<Compile Include="Computers\Commodore64\Cartridge\Mapper0013.cs" />
<Compile Include="Computers\Commodore64\Cartridge\Mapper0020.cs" />
+ <Compile Include="Computers\Commodore64\Cartridge\Mapper002B.cs" />
<Compile Include="Computers\Commodore64\Cassette\CassettePortDevice.cs" />
<Compile Include="Computers\Commodore64\Cassette\TapeDrive.cs" />
<Compile Include="Computers\Commodore64\C64FormatFinder.cs" />
diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/C64.Motherboard.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/C64.Motherboard.cs
index 071e3f2dff..641692ffda 100644
--- a/BizHawk.Emulation.Cores/Computers/Commodore64/C64.Motherboard.cs
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/C64.Motherboard.cs
@@ -196,7 +196,9 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64
}
public void Init()
- {
+ {
+ CartPort.ReadOpenBus = ReadOpenBus;
+
Cassette.ReadDataOutput = CassPort_ReadDataOutput;
Cassette.ReadMotor = CassPort_ReadMotor;
diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/C64.MotherboardInterface.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/C64.MotherboardInterface.cs
index 95f99362c2..14375eceb6 100644
--- a/BizHawk.Emulation.Cores/Computers/Commodore64/C64.MotherboardInterface.cs
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/C64.MotherboardInterface.cs
@@ -172,5 +172,10 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64
_lastReadVicData = Pla.VicRead(_lastReadVicAddress);
return _lastReadVicData;
}
+
+ private int ReadOpenBus()
+ {
+ return _lastReadVicData;
+ }
}
}
diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/CartridgeDevice.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/CartridgeDevice.cs
index 7fed92029f..3636f28b85 100644
--- a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/CartridgeDevice.cs
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/CartridgeDevice.cs
@@ -9,6 +9,8 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
{
public abstract partial class CartridgeDevice : IDriveLight
{
+ public Func<int> ReadOpenBus;
+
public static CartridgeDevice Load(byte[] crtFile)
{
using (var mem = new MemoryStream(crtFile))
@@ -70,33 +72,39 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
CartridgeDevice result;
switch (mapper)
{
- case 0x0000:
+ case 0x0000: // Standard Cartridge
result = new Mapper0000(chipAddress, chipData, game, exrom);
break;
- case 0x0005:
+ case 0x0001: // Action Replay (4.2 and up)
+ result = new Mapper0001(chipAddress, chipBank, chipData);
+ break;
+ case 0x0005: // Ocean
result = new Mapper0005(chipAddress, chipBank, chipData);
break;
- case 0x000A:
- result = new Mapper000A(chipAddress, chipBank, chipData);
+ case 0x000A: // Epyx FastLoad
+ result = new Mapper000A(chipData);
break;
- case 0x000B:
+ case 0x000B: // Westermann Learning
result = new Mapper000B(chipAddress, chipData);
break;
- case 0x000F:
+ case 0x000F: // C64 Game System / System 3
result = new Mapper000F(chipAddress, chipBank, chipData);
break;
- case 0x0011:
+ case 0x0011: // Dinamic
result = new Mapper0011(chipAddress, chipBank, chipData);
break;
- case 0x0012:
+ case 0x0012: // Zaxxon / Super Zaxxon
result = new Mapper0012(chipAddress, chipBank, chipData);
break;
- case 0x0013:
+ case 0x0013: // Domark
result = new Mapper0013(chipAddress, chipBank, chipData);
break;
- case 0x0020:
+ case 0x0020: // EasyFlash
result = new Mapper0020(chipAddress, chipBank, chipData);
break;
+ case 0x002B: // Prophet 64
+ result = new Mapper002B(chipAddress, chipBank, chipData);
+ break;
default:
throw new Exception("This cartridge file uses an unrecognized mapper: " + mapper);
}
@@ -182,22 +190,22 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
public virtual int Peek8000(int addr)
{
- return 0xFF;
+ return ReadOpenBus();
}
public virtual int PeekA000(int addr)
{
- return 0xFF;
+ return ReadOpenBus();
}
public virtual int PeekDE00(int addr)
{
- return 0xFF;
+ return ReadOpenBus();
}
public virtual int PeekDF00(int addr)
{
- return 0xFF;
+ return ReadOpenBus();
}
public virtual void Poke8000(int addr, int val)
@@ -218,22 +226,22 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
public virtual int Read8000(int addr)
{
- return 0xFF;
+ return ReadOpenBus();
}
public virtual int ReadA000(int addr)
{
- return 0xFF;
+ return ReadOpenBus();
}
public virtual int ReadDE00(int addr)
{
- return 0xFF;
+ return ReadOpenBus();
}
public virtual int ReadDF00(int addr)
{
- return 0xFF;
+ return ReadOpenBus();
}
[SaveState.DoNotSave]
diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/CartridgePort.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/CartridgePort.cs
index 9ca7f2112b..88c65a1a47 100644
--- a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/CartridgePort.cs
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/CartridgePort.cs
@@ -1,10 +1,13 @@
-using BizHawk.Common;
+using System;
+using BizHawk.Common;
using BizHawk.Emulation.Common;
namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
{
public sealed class CartridgePort : IDriveLight
{
+ public Func<int> ReadOpenBus;
+
private CartridgeDevice _cartridgeDevice;
private bool _connected;
@@ -82,6 +85,7 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
{
_connected = true;
_cartridgeDevice = newCartridgeDevice;
+ newCartridgeDevice.ReadOpenBus = ReadOpenBus;
}
public void Disconnect()
diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper0001.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper0001.cs
new file mode 100644
index 0000000000..d2dd29fbec
--- /dev/null
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper0001.cs
@@ -0,0 +1,154 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
+{
+ public abstract partial class CartridgeDevice
+ {
+ private sealed class Mapper0001 : CartridgeDevice
+ {
+ [SaveState.SaveWithName("RAM")] private readonly int[] _ram = new int[0x2000];
+ [SaveState.SaveWithName("RAMEnabled")] private bool _ramEnabled;
+ [SaveState.DoNotSave] private readonly int[] _rom = new int[0x8000];
+ [SaveState.SaveWithName("ROMOffset")] private int _romOffset;
+ [SaveState.SaveWithName("CartEnabled")] private bool _cartEnabled;
+
+ public Mapper0001(IList<int> newAddresses, IList<int> newBanks, IList<int[]> newData)
+ {
+ pinExRom = false;
+ pinGame = false;
+ for (var i = 0; i < newData.Count; i++)
+ {
+ if (newAddresses[i] == 0x8000)
+ Array.Copy(newData[i], 0, _rom, 0x2000 * newBanks[i], 0x2000);
+ }
+ _romOffset = 0;
+ _cartEnabled = true;
+ }
+
+ public override void HardReset()
+ {
+ base.HardReset();
+ pinExRom = false;
+ pinGame = false;
+ for (var i = 0; i < 0x2000; i++)
+ _ram[i] = 0x00;
+ _romOffset = 0;
+ _cartEnabled = true;
+ }
+
+ public override int Peek8000(int addr)
+ {
+ return GetLoRom(addr);
+ }
+
+ public override int PeekA000(int addr)
+ {
+ return Peek8000(addr);
+ }
+
+ public override int PeekDF00(int addr)
+ {
+ return GetIo2(addr);
+ }
+
+ public override void Poke8000(int addr, int val)
+ {
+ SetLoRom(addr, val);
+ }
+
+ public override void PokeA000(int addr, int val)
+ {
+ Poke8000(addr, val);
+ }
+
+ public override void PokeDE00(int addr, int val)
+ {
+ SetState(val);
+ }
+
+ public override void PokeDF00(int addr, int val)
+ {
+ SetIo2(addr, val);
+ }
+
+ public override int Read8000(int addr)
+ {
+ return GetLoRom(addr);
+ }
+
+ public override int ReadA000(int addr)
+ {
+ return GetHiRom(addr);
+ }
+
+ public override int ReadDF00(int addr)
+ {
+ return GetIo2(addr);
+ }
+
+ public override void Write8000(int addr, int val)
+ {
+ SetLoRom(addr, val);
+ }
+
+ public override void WriteA000(int addr, int val)
+ {
+ SetLoRom(addr, val);
+ }
+
+ public override void WriteDE00(int addr, int val)
+ {
+ SetState(val);
+ }
+
+ public override void WriteDF00(int addr, int val)
+ {
+ SetIo2(addr, val);
+ }
+
+ private void SetState(int val)
+ {
+ pinGame = (val & 0x01) == 0;
+ pinExRom = (val & 0x02) != 0;
+ _cartEnabled = (val & 0x04) == 0;
+ _romOffset = (val & 0x18) << 10;
+ _ramEnabled = (val & 0x20) == 0;
+ }
+
+ private int GetLoRom(int addr)
+ {
+ return _ramEnabled
+ ? _ram[addr & 0x1FFF]
+ : _rom[(addr & 0x1FFF) | _romOffset];
+ }
+
+ private int GetHiRom(int addr)
+ {
+ return _rom[(addr & 0x1FFF) | _romOffset];
+ }
+
+ private void SetLoRom(int addr, int val)
+ {
+ _ram[addr & 0x1FFF] = val;
+ }
+
+ private int GetIo2(int addr)
+ {
+ if (!_cartEnabled)
+ return ReadOpenBus();
+
+ return _ramEnabled
+ ? _ram[(addr & 0xFF) | 0x1F00]
+ : _rom[(addr & 0xFF) | _romOffset | 0x1F00];
+ }
+
+ private void SetIo2(int addr, int val)
+ {
+ _ram[addr & 0x1FFF] = val & 0xFF;
+ }
+ }
+ }
+}
diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper000A.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper000A.cs
index 47b904d97f..e3e1250e91 100644
--- a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper000A.cs
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper000A.cs
@@ -5,11 +5,11 @@ using System.Text;
namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
{
- //792
-
// Epyx Fastload. Uppermost page is always visible at DFxx.
- // They use a capacitor that is recharged by accesses to DExx
- // to pull down EXROM.
+ // They use a capacitor that is discharged by accesses to DExx
+ // to pull down EXROM. Also, accesses to LOROM while it is active
+ // discharge the capacitor.
+ // Thanks to VICE team for the info: http://vice-emu.sourceforge.net/vice_15.html
public abstract partial class CartridgeDevice
{
@@ -24,7 +24,7 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
[SaveState.DoNotSave]
private readonly int[] _rom;
- public Mapper000A(IList<int> newAddresses, IList<int> newBanks, IList<int[]> newData)
+ public Mapper000A(IList<int[]> newData)
{
_rom = new int[0x2000];
Array.Copy(newData.First(), _rom, 0x2000);
diff --git a/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper002B.cs b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper002B.cs
new file mode 100644
index 0000000000..8e14566357
--- /dev/null
+++ b/BizHawk.Emulation.Cores/Computers/Commodore64/Cartridge/Mapper002B.cs
@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BizHawk.Emulation.Cores.Computers.Commodore64.Cartridge
+{
+ // Prophet 64 cartridge. Because we can.
+ // 32 banks of 8KB.
+ // DFxx = status register, xxABBBBB. A=enable cart, B=bank
+ // Thanks to VICE team for the info: http://vice-emu.sourceforge.net/vice_15.html
+
+ public abstract partial class CartridgeDevice
+ {
+ private class Mapper002B : CartridgeDevice
+ {
+ [SaveState.DoNotSave]
+ private readonly int[] _rom;
+ [SaveState.SaveWithName("RomOffset")]
+ private int _romOffset;
+ [SaveState.SaveWithName("RomEnabled")]
+ private bool _romEnabled;
+
+ public Mapper002B(IList<int> newAddresses, IList<int> newBanks, IList<int[]> newData)
+ {
+ pinExRom = false;
+ pinGame = true;
+ _rom = new int[0x40000];
+ Array.Copy(newData.First(), _rom, 0x2000);
+ pinGame = true;
+ for (var i = 0; i < newData.Count; i++)
+ {
+ if (newAddresses[i] == 0x8000)
+ {
+ Array.Copy(newData[i], 0, _rom, newBanks[i] * 0x2000, 0x2000);
+ }
+ }
+ }
+
+ public override void HardReset()
+ {
+ _romEnabled = true;
+ _romOffset = 0;
+ }
+
+ public override int Peek8000(int addr)
+ {
+ return _romOffset | (addr & 0x1FFF);
+ }
+
+ public override int PeekDF00(int addr)
+ {
+ // For debugging only. The processor does not see this.
+ return ((_romOffset >> 13) & 0x1F) | (_romEnabled ? 0x20 : 0x00);
+ }
+
+ public override void PokeDF00(int addr, int val)
+ {
+ _romOffset = (val & 0x1F) << 13;
+ _romEnabled = (val & 0x20) != 0;
+ }
+
+ public override int Read8000(int addr)
+ {
+ return _romOffset | (addr & 0x1FFF);
+ }
+
+ public override int ReadDF00(int addr)
+ {
+ return 0x00;
+ }
+
+ public override void WriteDF00(int addr, int val)
+ {
+ _romOffset = (val & 0x1F) << 13;
+ _romEnabled = (val & 0x20) != 0;
+ }
+ }
+ }
+}