public Byte exe_ins()
{
Byte opTime = 1;
Opcodes.Opcode op = (Opcodes.Opcode)(Program.emulator.GetMemory().ReadFromMemory(reg_pc));
// Logger.AppendLog(Logger.LOG_LEVEL.LOG_LEVEL_DEBUG, "[" + String.Format("{0:X4}", get_reg_pc()) + "]: " + String.Format("{0:X2}", op) + "PRE Execute");
if (!Enum.IsDefined(typeof(Opcodes.Opcode), op))
{
Logger.AppendLog(Logger.LOG_LEVEL.LOG_LEVEL_WARNING, "UNKNOWN OPCODE OCCURED: " + String.Format("{0:X2}", op)
+ " At Address: " + String.Format("{0:X4}", reg_pc));
set_reg_pc((UInt16)(get_reg_pc() + 1));
return(opTime);
}
// Special Execute for CB Opcodes
if (op == Opcodes.Opcode.OPCODE_INTERNAL_CB)
{
// Increase Program Counter to next location
set_reg_pc((UInt16)(get_reg_pc() + 1));
OpcodesCB.ExecuteOpcodeCB((OpcodesCB.OpcodeCB)(Program.emulator.GetMemory().ReadFromMemory(reg_pc)));
// TODO: Implement Clocks for CB Opcodes
return(opTime);
}
//Logger.AppendLog(Logger.LOG_LEVEL.LOG_LEVEL_DEBUG, "[" + String.Format("{0:X4}", get_reg_pc()) + "]: " + op.ToString() + " Executing");
Opcodes.ExecuteOpcode(op);
opTime = Opcodes.opcodeTimings.ContainsKey(op) ? Opcodes.opcodeTimings[op] : (byte)1;
return(opTime);
}
private void lv_windowLoadData(UInt16 i_address)
{
lv_dissassembly.Clear();
lv_dissassembly.Columns.Add("Address", 70);
lv_dissassembly.Columns.Add("Opcode", 70);
lv_dissassembly.Columns.Add("Instruction", 200);
UInt16 lo_val = (i_address < 0x00FF) ? (UInt16)(0) : (UInt16)(i_address - 0xFF);
UInt16 hi_val = ((UInt32)(i_address + 0x00FF) > 0xFFFF) ? (UInt16)(0xFFFF) : (UInt16)(i_address + 0xFF);
for (UInt16 i = lo_val; i < hi_val;)
{
Byte opcode = Program.emulator.GetMemory().ReadFromMemory(i);
String address = String.Format("{0:X4}", i);
String value = String.Format("{0:X2}", opcode);
ListViewItem item = new ListViewItem(address);
item.SubItems.Add(value);
if ((Opcodes.Opcode)opcode == Opcodes.Opcode.OPCODE_INTERNAL_CB)
{
opcode = Program.emulator.GetMemory().ReadFromMemory(++i);
item.SubItems.Add(OpcodesCB.GetOpcodeCB((OpcodesCB.OpcodeCB)opcode, ref i));
}
else
{
item.SubItems.Add(Opcodes.GetOpcode((Opcodes.Opcode)opcode, ref i));
}
lv_dissassembly.Items.Add(item);
}
if (lv_dissassembly.Items.Count == 0)
{
return;
}
int index = GetItemIndexWithAddress(String.Format("{0:X4}", i_address));
ListViewItem sel_item = lv_dissassembly.Items[index];
sel_item.Selected = true;
sel_item.Focused = true;
lv_dissassembly.Select();
lv_dissassembly.EnsureVisible(index);
}