a56 software package provides Motorola DSP56001 assembler, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install a56
a56 is installed in your system.
Make ensure the a56 package were installed using the commands given below,
$ sudo dpkg-query -l | grep a56 *
You will get with a56 package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | a56 |
| Version | 1.3+dfsg-8 |
| Description | Motorola DSP56001 assembler |
| Sub Section | devel |