private void SetBreakpointFromCellClickForDisassemblyView(MicrocodeBank bank, int index)
{
DataGridView view = null;
switch (bank)
{
case MicrocodeBank.RAM0:
view = _rom0SourceViewer;
break;
case MicrocodeBank.RAM1:
view = _ram1SourceViewer;
break;
case MicrocodeBank.RAM2:
view = _ram2SourceViewer;
break;
default:
throw new InvalidOperationException("Bank does not have a disassembly view.");
}
// Set/unset the breakpoint
bool value = (bool)view.Rows[index].Cells[0].Value;
view.Rows[index].Cells[0].Value = !value;
ModifyMicrocodeBreakpoint(bank, (UInt16)index, !value);
}
private void SetBreakpointFromCellClickForSourceView(MicrocodeBank bank, int index)
{
DataGridView view = null;
switch (bank)
{
case MicrocodeBank.ROM0:
view = _rom0SourceViewer;
break;
case MicrocodeBank.ROM1:
view = _rom1SourceViewer;
break;
default:
throw new InvalidOperationException("Bank does not have a source view.");
}
// See if this is a source line, if so check/uncheck the box
// and set/unset a breakpoint for the line
if (view.Rows[index].Tag != null)
{
bool value = (bool)view.Rows[index].Cells[0].Value;
view.Rows[index].Cells[0].Value = !value;
ModifyMicrocodeBreakpoint(bank, (UInt16)view.Rows[index].Tag, !value);
}
}
private static void Init()
{
//
// Max 3 banks of microcode RAM
_uCodeRam = new UInt32[1024 * 3];
if (Configuration.SystemType == SystemType.AltoI)
{
LoadAltoIMicrocode(_uCodeRomsAltoI);
}
else
{
LoadAltoIIMicrocode(_uCodeRomsAltoII);
}
//
// Cache 5k of instructions: max 2K ROM, 3K RAM.
_decodeCache = new MicroInstruction[1024 * 5];
// Precache ROM
CacheMicrocodeROM();
// Precache (empty) RAM
for (ushort i = 0; i < _uCodeRam.Length; i++)
{
UpdateRAMCache(i);
}
// Start in ROM0
_microcodeBank = new MicrocodeBank[16];
_ramAddr = 0;
_ramBank = 0;
_ramSelect = true;
_lowHalfsel = true;
// Cache the system type from the configuration
_systemType = Configuration.SystemType;
}
public void LoadSourceCode(MicrocodeBank bank, string path)
{
if (path == null)
{
throw new ArgumentNullException(path, "Microcode path must be specified.");
}
DataGridView view = bank == MicrocodeBank.ROM0 ? _rom0SourceViewer : _rom1SourceViewer;
using (StreamReader sr = new StreamReader(path))
{
while (!sr.EndOfStream)
{
string line = sr.ReadLine();
SourceLine src = new SourceLine(line);
int i = view.Rows.Add(
false, // breakpoint
GetTextForTask(src.Task),
src.Address,
src.Text);
// Give the row a color based on the task
view.Rows[i].DefaultCellStyle.BackColor = GetColorForTask(src.Task);
// Tag the row based on the PROM address (if any) to make it easy to find.
if (!String.IsNullOrEmpty(src.Address))
{
view.Rows[i].Tag = Convert.ToUInt16(src.Address, 8);
}
}
}
// Ensure the UI view gets refreshed to display the current MPC source
Refresh();
}
private bool GetMicrocodeBreakpoint(MicrocodeBank bank, UInt16 address)
{
return(_microcodeBreakpointEnabled[(int)bank, address]);
}
private void ModifyMicrocodeBreakpoint(MicrocodeBank bank, UInt16 address, bool set)
{
_microcodeBreakpointEnabled[(int)bank, address] = set;
}
private void RefreshUI()
{
// Registers
for (int i = 0; i < 32; i++)
{
_registerData.Rows[i].Cells[0].Value = Conversion.ToOctal(i, 2);
_registerData.Rows[i].Cells[1].Value = Conversion.ToOctal(_system.CPU.R[i], 6);
_registerData.Rows[i].Cells[2].Value = Conversion.ToOctal(_system.CPU.S[0][i], 6);
}
// Tasks
for (int i = 0; i < 16; i++)
{
_taskData.Rows[i].Cells[0].Value = GetTextForTask((TaskType)i);
_taskData.Rows[i].Cells[1].Value = GetTextForTaskState(_system.CPU.Tasks[i]);
_taskData.Rows[i].Cells[2].Value = GetTextForTaskBank(_system.CPU.Tasks[i]);
_taskData.Rows[i].Cells[3].Value =
_system.CPU.Tasks[i] != null?Conversion.ToOctal(_system.CPU.Tasks[i].MPC, 4) : String.Empty;
}
// Other registers
_otherRegs.Rows[0].Cells[1].Value = Conversion.ToOctal(_system.CPU.L, 6);
_otherRegs.Rows[1].Cells[1].Value = Conversion.ToOctal(_system.CPU.T, 6);
_otherRegs.Rows[2].Cells[1].Value = Conversion.ToOctal(_system.CPU.M, 6);
_otherRegs.Rows[3].Cells[1].Value = Conversion.ToOctal(_system.CPU.IR, 6);
_otherRegs.Rows[4].Cells[1].Value = Conversion.ToOctal(_system.CPU.ALUC0, 1);
_otherRegs.Rows[5].Cells[1].Value = Conversion.ToOctal(_system.MemoryBus.MAR, 6);
_otherRegs.Rows[6].Cells[1].Value = Conversion.ToOctal(_system.MemoryBus.MDLow, 6);
_otherRegs.Rows[7].Cells[1].Value = Conversion.ToOctal(_system.MemoryBus.MDHigh, 6);
_otherRegs.Rows[8].Cells[1].Value = Conversion.ToOctal(_system.MemoryBus.MDWrite, 6);
_otherRegs.Rows[9].Cells[1].Value = Conversion.ToOctal(_system.MemoryBus.Cycle & 0x3f, 2);
// Reserved memory locations
for (int i = 0; i < _reservedMemoryEntries.Length; i++)
{
_reservedMemory.Rows[i].Cells[2].Value =
Conversion.ToOctal(_system.MemoryBus.DebugReadWord(_reservedMemoryEntries[i].Address), 6);
}
//
// Select active tab based on current UCode bank
MicrocodeBank bank = UCodeMemory.GetBank(_system.CPU.CurrentTask.TaskType);
switch (bank)
{
case MicrocodeBank.ROM0:
SourceTabs.SelectedIndex = 0;
break;
case MicrocodeBank.ROM1:
SourceTabs.SelectedIndex = 1;
break;
case MicrocodeBank.RAM0:
SourceTabs.SelectedIndex = 2;
break;
}
RefreshMicrocodeDisassembly(_system.CPU.CurrentTask.MPC);
// Highlight the nova memory location corresponding to the emulator PC.
// TODO: this should be configurable
ushort pc = _system.CPU.R[6];
HighlightNovaSourceLine(pc);
// Exec state
switch (_execState)
{
case ExecutionState.Stopped:
ExecutionStateLabel.Text = "Stopped";
break;
case ExecutionState.SingleStep:
ExecutionStateLabel.Text = "Stepping";
break;
case ExecutionState.AutoStep:
ExecutionStateLabel.Text = "Stepping (auto)";
break;
case ExecutionState.Running:
ExecutionStateLabel.Text = "Running";
break;
case ExecutionState.BreakpointStop:
ExecutionStateLabel.Text = "Stopped (bkpt)";
break;
case ExecutionState.InternalError:
ExecutionStateLabel.Text = String.Format("Stopped (error {0})", _lastExceptionText);
break;
}
this.BringToFront();
}
