---
name: "iceunpack"
section: "1"
platform: "linux"
package: "fpga-icestorm"
version: "0~20250207git7fbf8c0+dfsg1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/iceunpack"
---

# iceunpack(1)

Unpacks binary bitstreams for Lattice FPGA to readable .txt file

## NAME

**iceunpack** - Unpacks binary bitstreams for Lattice FPGA to readable .txt file

## SYNOPSIS

```
iceunpack [options] [input-file [output-file]]
```

## DESCRIPTION

**This tool can be used to unpack binary bitstreams for Lattice FPGA. It is part of the icestorm project.**

## OPTIONS

- **-u**

  **unpack mode (implied when called as 'iceunpack')**

- **-v**

  **verbose (repeat to increase verbosity)**

- **-b**

  **write cram bitmap as netpbm file**

- **-f**

  **write cram bitmap (fill tiles) as netpbm file**

- **-c**

  **write cram bitmap (checkerboard) as netpbm file. repeat to flip the selection of tiles**

- **-r**

  **write bram data, not cra, to the netpbm file**

- **-B0,-B1,-B2,-B3**

  **only include the specified banks in the netpbm file**

## SEE ALSO

**[icepack(1)](/icepack/1.md)**

## AUTHOR

**This manual page was written by Ruben Undheim \<ruben.undheim@gmail.com\> for the Debian project (and may be used by others).**