kcemu software package provides KC 85/4 emulator, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install kcemu
kcemu is installed in your system.
Make ensure the kcemu package were installed using the commands given below,
$ sudo dpkg-query -l | grep kcemu *
You will get with kcemu package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Other OSs and file systems |
| Package | kcemu |
| Version | 0.5.1+dfsg-2 |
| Description | KC 85/4 emulator |
| Sub Section | otherosfs |