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Delete CartCBS12K.cs

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alyosha-tas 2017-08-29 09:31:57 -04:00 committed by GitHub
parent 5a04d633be
commit 6914f8b7c4
1 changed files with 0 additions and 100 deletions
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EMU7800/Core/CartCBS12K.cs
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@ -1,100 +0,0 @@
namespace EMU7800.Core
{
/// <summary>
/// CBS RAM Plus 12KB bankswitched carts with 128 bytes of RAM.
/// </summary>
public sealed class CartCBS12K : Cart
{
//
// Cart Format Mapping to ROM Address Space
// Bank1: 0x0000:0x1000 Bank1:0x1000:0x1000 Select Segment: 0ff8-0ffa
// Bank2: 0x1000:0x1000
// Bank3: 0x2000:0x1000
// Shadows ROM
// 0x1000:0x80 RAM write port
// 0x1080:0x80 RAM read port
//
ushort BankBaseAddr;
readonly byte[] RAM;
int Bank
{
set { BankBaseAddr = (ushort)(value * 0x1000); }
}
#region IDevice Members
public override void Reset()
{
Bank = 2;
}
public override byte this[ushort addr]
{
get
{
addr &= 0x0fff;
if (addr < 0x0200 && addr >= 0x0100)
{
return RAM[addr & 0xff];
}
UpdateBank(addr);
return ROM[BankBaseAddr + addr];
}
set
{
addr &= 0x0fff;
if (addr < 0x0100)
{
RAM[addr & 0xff] = value;
return;
}
UpdateBank(addr);
}
}
#endregion
private CartCBS12K()
{
}
public CartCBS12K(byte[] romBytes)
{
LoadRom(romBytes, 0x3000);
Bank = 2;
RAM = new byte[0x100];
}
void UpdateBank(ushort addr)
{
if (addr < 0x0ff8 || addr > 0x0ffa) { }
else
{
Bank = addr - 0x0ff8;
}
}
#region Serialization Members
public CartCBS12K(DeserializationContext input, MachineBase m) : base(input)
{
input.CheckVersion(1);
LoadRom(input.ReadExpectedBytes(0x3000), 0x3000);
RAM = input.ReadExpectedBytes(0x100);
BankBaseAddr = input.ReadUInt16();
}
public override void GetObjectData(SerializationContext output)
{
base.GetObjectData(output);
output.WriteVersion(1);
output.Write(ROM);
output.Write(RAM);
output.Write(BankBaseAddr);
}
#endregion
}
}