public void Interrupt(byte intnum)
{
this.halted = false;
uint oldCtl = controlRegister;
controlRegister &= ~0x01u;
stack.PushInt32(oldCtl);
for (int i = 0; i < 16; i++)
{
stack.PushInt32(GetGeneralPurposeRegister((Register)i));
}
SetGeneralPurposeRegister(Register.R15, memory.ReadInt32(ivtRegister + (uint)(intnum * 4)));
Console.WriteLine("i {0:x8}", memory.ReadInt32(ivtRegister + (uint)(intnum * 4)));
}
private static object ReadOperand(QuasarRam memory, ref uint address, AddressingMode am)
{
switch (am)
{
case AddressingMode.DIRECT_REGISTER:
address++;
return((Register)memory[address - 1]);
case AddressingMode.CONDITION_CODE:
address++;
return((byte)memory[address - 1]);
case AddressingMode.INDIRECT_REG8:
case AddressingMode.INDIRECT_REG16:
case AddressingMode.INDIRECT_REG32:
Register reg = (Register)memory[address];
byte[] bytes = new byte[2];
memory.Read(address + 1, 2, 0, bytes);
address += 3;
return(new IndirectOffset(reg, BitConverter.ToInt16(bytes, 0)));
case AddressingMode.IMMEDIATE_32:
address += 4;
return(memory.ReadInt32(address - 4));
}
return(null);
}
public uint PopInt32()
{
uint sp = host.GetGeneralPurposeRegister(Register.R14) + 4;
uint ret = memory.ReadInt32(sp);
host.SetGeneralPurposeRegister(Register.R14, sp);
return(ret);
}
