Features

Assembly Language Support

Full support for traditional FV-1 assembly programming:

📝 Syntax Highlighting: Complete syntax highlighting for .spn files and the full FV-1 instruction set
⚠️ Real-time Diagnostics: Errors and warnings appear as you type, with comprehensive error messages
💡 Hover Information: Detailed documentation for instructions, registers, and memory locations
🔗 Go to Definition: Use Ctrl+Click to navigate to user-defined symbols throughout your code
✓ Built-in Assembler: Compile your assembly directly in VS Code with full error reporting

Create FV-1 programs visually without writing assembly code:

🎨 Drag-and-Drop Palette: Organized blocks in categories: I/O, Control, Gain/Mixing, Filters, Effects, and more
⚡ Real-time Compilation: See compilation results and resource usage instantly as you build
🔍 Live Error Checking: Connection validation and resource tracking in real-time
📊 Resource Monitor: Visual feedback on instruction count, register usage, and delay memory
🧠 Code Optimizer: Automatically optimizes generated assembly to save program space
🎯 Direct Programming: Program your diagram directly to a pedal slot with one keystroke

Debug assembly files:

Or simulate with realtime audio:

Test your programs without hardware:

🎧 Audio Monitor: Listen to your effect in real-time with built-in or custom stimulus files
📈 Multi-trace Oscilloscope: Visualize any register or symbol with logarithmic zoom (1ms to 1s)
💾 Delay Memory Map: Visual representation of delay RAM usage and pointer movement
🔴 Live Debugging: Set breakpoints, step through instructions, and inspect variables live
🎚️ Interactive Controls: Real-time control of POT0, POT1, POT2 and Bypass during simulation

Monitor your program’s resource consumption in real-time:

Organize and deploy multiple programs to your Easy Spin pedal:

📂 Visual Bank Editor: Manage all 8 program slots with an intuitive interface
🎯 Drag-and-Drop Assignment: Drag .spn or .spndiagram files directly into bank slots
🔄 Mix and Match: Combine assembly and block diagram programs in a single bank
⚙️ Batch Programming: Program individual slots or the entire bank at once
🔄 Automatic Compilation: All files compile/assemble automatically during programming
💾 Export to HEX: Save your bank as Intel HEX for archival or use with other programmers

Direct integration with the Audiofab USB Programmer:

🔌 Program to any slot (1-8) on your Easy Spin pedal

✓ Automatic verification of written data

💾 Backup entire pedal to Intel HEX format

📂 Load HEX files to EEPROM

💾 Export banks to HEX for use with other tools or archival

The extension includes a comprehensive library of effects and utilities:

Inputs/Outputs: Hardware ADC and DAC routing
Control: Smoothers, Power curve shaping, Tremolizers
Gain/Mixing: Custom Mixers, Multi-channel Crossfades, Volume controls
Filter: 1-pole LPF/HPFs, 2-pole SVFs
Effects: Including Delays, Modulation (Chorus, Flanger), and Reverbs (Plate, Spring, Room, Minimal)
Other: Fixed and Adjustable Sine Tone Generators

Note

Many blocks are ported from the excellent SpinCAD Designer.