add skip option

src/SendEPROM/Program.cs

@@ -13,6 +13,7 @@ namespace SendEPROM
             var portOption = new Option<string>(new string[] {"--port", "-p" }, description: "COM port on which to send the file",  getDefaultValue: () => "COM3");
             var baudOption = new Option<int>   (new string[] {"--baud", "-b" }, description: "Baud rate at which to send",          getDefaultValue: () => 115200);
             var modeOption = new Option<byte>  (new string[] {"--mode", "-m" }, description: "EPROM mode (1 = 27C256, 2 = 27C020)", getDefaultValue: () => 2);
+            var skipOption = new Option<int>   (new string[] {"--skip", "-s" }, description: "Skip N bytes at start of file",       getDefaultValue: () => 0);
 
             var fileArgument = new Argument<FileInfo>("file", description: "File to send");
 
@@ -21,20 +22,21 @@ namespace SendEPROM
                 portOption,
                 baudOption,
                 modeOption,
+                skipOption,
                 fileArgument
             };
 
             rootCmd.SetHandler(
-                (port, baud, mode, file) =>
+                (port, baud, mode, skip, file) =>
                 {
-                    SendData(port, baud, mode, file);
+                    SendData(port, baud, mode, skip, file);
                 },
-                portOption, baudOption, modeOption, fileArgument);
+                portOption, baudOption, modeOption, skipOption, fileArgument);
 
             return await rootCmd.InvokeAsync(args);
         }
 
-        static void SendData(string port, int baud, byte mode, FileInfo file)
+        static void SendData(string port, int baud, byte mode, int skip, FileInfo file)
         {
 
 			Console.WriteLine($"Reading {file.FullName}");
@@ -54,8 +56,8 @@ namespace SendEPROM
                 sp.Write(modeBuff, 0, 1);
             }
 
-            Console.WriteLine($"Sending {buff.Length} bytes");
+            Console.WriteLine($"Sending {buff.Length} bytes, skipping {skip} bytes");
-            sp.Write(buff, 0, buff.Length);
+            sp.Write(buff, skip, buff.Length - skip);
             sp.Close();
             Console.WriteLine("Done!");
         }

src/SendEPROM/SendEPROM.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <Nullable>disable</Nullable>
   </PropertyGroup>