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Added cuard clauses back

This commit is contained in:
Lee Fogg 2020-04-26 12:15:53 +01:00
parent faa13478f9
commit 8fa13b6730
1 changed files with 7 additions and 3 deletions
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8
Emux.GameBoy/Cartridge/BufferedExternalMemory.cs
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@ -55,17 +55,21 @@ namespace Emux.GameBoy.Cartridge
public byte ReadByte(int address) public byte ReadByte(int address)
{ {
return IsActive ? _externalMemory[address] : (byte)0; if (_externalMemory != null && IsActive)
return _externalMemory[address];
return 0;
} }
public void ReadBytes(int address, byte[] buffer, int offset, int length) public void ReadBytes(int address, byte[] buffer, int offset, int length)
{ {
if (_externalMemory != null)
Array.Copy(_externalMemory, address, buffer, 0, length); Array.Copy(_externalMemory, address, buffer, 0, length);
} }
public void WriteByte(int address, byte value) public void WriteByte(int address, byte value)
{ {
if (IsActive) if (_externalMemory != null && IsActive)
_externalMemory[address] = value; _externalMemory[address] = value;
} }