SRecordMerge (S19 Merge)

A lightweight WPF utility to load, inspect, sort, and merge Motorola S‑Record (S0/S1/S2/S3/S7/S8/S9) files. It provides a simple UI to:

• Load multiple .s19/.srec/.sre files at once
• Extract records and sort them by address
• Preserve the first S0 (header) and the last end record (S7/S8/S9) if present in specific inputs
• Inspect parsed records in a table (Type, Address, Data Length, Data)
• Export the merged result to a new S‑Record file

Screenshots

• UI shows two buttons (Load S-Record File, Export) and a list of parsed rows.
• You can add screenshots here (e.g., docs/screenshot-1.png).

Features

• Multi-file import using file dialog
• S0 header record and last end record (S7/S8/S9) handling
• Address-aware sorting of S1/S2/S3 records
• Clean display of records in a GridView
• Export merged lines to a file via Save File dialog

How it works (high level)

• Load: Select multiple S-Record files. The app will parse supported record types.
• Merge: Non-header/end records (S1/S2/S3) are collected and sorted by their numeric address.
• Header/End: If a file name contains "Boot_HSM_App.sre", the first S0 and the last end record (S7/S8/S9) from that file are used as header and footer in the final output.
• Export: The final ordered lines are written to a new file you choose.

Tech Stack

• .NET 7
• WPF (MVVM pattern)
• CommunityToolkit.Mvvm (ObservableObject, RelayCommand)

Project Structure

• App.xaml, MainWindow.xaml(.cs): WPF entry and host window
• S19MergeView/
  • S19MergeView.xaml: View (buttons + ListView)
  • S19MergeViewModel.cs: VM with commands for Load/Export, parsing/merging logic
  • S19MergeModel.cs: SRecord model (Type, Address, DataLen, DataString)
• Services/BindableBase.cs: Convenience base class for bindable properties built on ObservableObject

Requirements

• Visual Studio 2022 (or newer)
• .NET 7 SDK
• Windows (WPF)

Getting Started

1. Clone the repository
   • git clone
2. Open S19Merge.sln in Visual Studio 2022.
3. Restore NuGet packages if prompted (CommunityToolkit.Mvvm).
4. Set S19Merge as startup project and press F5 to run.

Usage

1. Click "Load S-Record File" and select one or more S-Record files (.s19/.srec/.sre).
2. The list will show parsed records (Type, Address, Data Length, Data).
3. Records will be sorted by address (S1, S2, S3). If a file named like "Boot_HSM_App.sre" is included, its S0 header and the last S7/S8/S9 record are used.
4. Click "Export" to save the merged S-Record as a new file.

Notes & Limitations

• Parsing logic targets standard S0/S1/S2/S3/S7/S8/S9 lines. Lines outside these types are ignored.
• The special handling for header/end records is keyed on file names that contain "Boot_HSM_App.sre" (case-insensitive). Adjust logic in S19MergeViewModel if your naming differs.
• The tool does not currently validate checksums or rewrite them.

Roadmap (ideas)

• Configurable header/end selection rules
• Checksum verification and regeneration
• Command-line mode
• Unit tests for parser and merger

Contributing

• Issues and PRs are welcome. Please keep changes focused and include a brief description and testing notes.

License

• Add your preferred license (e.g., MIT) and license file if applicable.