private bool Call(OpCode code)
{
int address = code.AsInteger() & 0xFFF;
stack.Push(programCounter);
Jump(address);
return(true);
}
private bool ClearOrReturn(OpCode code)
{
if (code.AsInteger() == 0x00E0)
{
screen.Clear();
}
else if (code.AsInteger() == 0x00EE)
{
Jump(stack.Pop());
}
else
{
throw new InvalidOperationException("Invalid opcode detected " + code + "!");
}
return(false);
}
private bool JumpToAddressOffset(OpCode code)
{
Jump(((code.AsInteger() & 0xFFF) + GetRegister(0)) % 0x1000);
return(true);
}
private bool SetI(OpCode code)
{
registerI = code.AsInteger() & 0xFFF;
return(false);
}
private bool JumpToAddress(OpCode code)
{
Jump(code.AsInteger() & 0xFFF);
return(true);
}
