General workflow:
1. Create a new session (Ctrl+N) or open a file (Ctrl+O).
2. Enter a program into RAM:
- Select a cell in the memory table (mouse or arrows)
- Type the hex opcode in the RAM Cell editor
- Press Enter
- Or open the opcode picker ('...' button) and select a command
3. Configure initial register values via the Register editor or inline editing on the schematic.
4. Ensure PC points to the program start (green highlight in table).
Select the target cell: PC syncs with the cursor.
5. Start execution (Ctrl+R) or step through (Ctrl+T / Ctrl+Y).
6. Watch the schematic, RAM table, and status bar update.