update readme

README.md

@@ -8,7 +8,7 @@ Current implemented Processors:
 
 The current workspace state, including memories and CPU state can be saved and loaded for continuing work or debugging later.
 
-You can add multiple external RAM spaces direct empty or load a binary to a definded XRAM address. 
+You can add multiple external RAM spaces direct empty or load a binary to a definded XRAM address.
 
 You can also enable M48T Timekeeper function on every RAM block, it uses a `DispatcherTimer` to update the time in the M48T time registers. It supports stop functionalities via the control registers. Write is not supported it will always update the time from current system clock.
 
@@ -26,11 +26,14 @@ The editor can load listings and import ROM dumps from binary or Intel HEX files
 
 The editor supports the following key commands at the moment:
 
+* B - add breakpoint
 * C - generate code from `DB` statement, possible switch case jumps `JMP @A+DPTR`
-* L - generate or update label
 * J - follow jump label
+* L - generate or update label
 * K - update comment
-* B - add breakpoint
+* S - create string
+* U - undefine listing entry
+* X - show XRefs
 
 ## Listing Format
 
@@ -49,11 +52,11 @@ The listings are stored and loaded in the following format:
 
 Example:
 ```
-0000  02 01 00                 RESET:               LJMP  INIT                 
+0000  02 01 00                 RESET:               LJMP  INIT
 0003  FF FF FF FF FF FF FF FF                       DB    ffh, ffh, ffh, ffh, ffh, ffh, ffh, ffh ; ........
-000B  C0 D0                    T0:                  PUSH  PSW                  
-000D  C0 E0                                         PUSH  ACC                  
-000F  C0 F0                                         PUSH  B    
+000B  C0 D0                    T0:                  PUSH  PSW
+000D  C0 E0                                         PUSH  ACC
+000F  C0 F0                                         PUSH  B
 ```
 
 Every unidentified code, empty memory or other data is grouped in `DB` instructions by the length of 8 bytes.

Sim80C51/Sim80C51.csproj

@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="YamlDotNet" Version="11.2.1" />
+    <PackageReference Include="YamlDotNet" Version="13.7.1" />
   </ItemGroup>
 
   <ItemGroup>

Sim80C51/SimulatorWindowContext.cs

@@ -24,7 +24,6 @@ public class SimulatorWindowContext : NotifyPropertyChanged
         private Controls.ListingEditorContext? listingCtx;
         private readonly SortedDictionary<ushort, Controls.MemoryContext> xmemCtx = new();
         private readonly DispatcherTimer stepTimer = new();
-        private int hiddenStepCounter = 0;
         #endregion
 
         #region Workspace commands
@@ -373,7 +372,7 @@ public class SimulatorWindowContext : NotifyPropertyChanged
 
         public ICommand PlayHiddenCommand => new RelayCommand((o) =>
         {
-            //CPU!.UiUpdates = false;
+            CPU!.UiUpdates = false;
             stepTimer.Start();
             (PlayCommand as RelayCommand)?.OnCanExecuteChanged();
             (PlayHiddenCommand as RelayCommand)?.OnCanExecuteChanged();
@@ -541,7 +540,7 @@ private void StopStepTimer()
 
         private void StepTimer_Tick(object? sender, EventArgs e)
         {
-            hiddenStepCounter = 0;
+            int loopStepCounter = 0;
             do
             {
                 if (listingCtx?.GetFromAddress(CPU!.PC) is not ListingEntry entry || entry.Instruction == Processors.InstructionType.DB)
@@ -558,8 +557,8 @@ private void StepTimer_Tick(object? sender, EventArgs e)
                     StopStepTimer();
                     return;
                 }
-                hiddenStepCounter++;
-            } while (CPU!.UiUpdates == false && stepTimer.IsEnabled && hiddenStepCounter < 20);
+                loopStepCounter++;
+            } while (stepTimer.IsEnabled && loopStepCounter < 20);
         }
 
         private void AddBreakPoint(ushort address)