QNX 0.4
Released in 1981 by Quantum Software Systems Ltd.
For IBM PC

This a pre-release of QNX, named "QUNIX"

After the login appears, remove the boot disk, insert the CMD disk in
to drive A:, and insert the USR disk in drive B. Then log in as "/".

These are single sided double density 5.25" floppy disk images.

Important: these are NOT DOS formatted disks, and will not open in
tools like WinImage. The CMD and USR disks are formatted with 
256-byte sectors, 16 sectors per track, with an odd sector interleave.

Use ImageDisk to create usable disks. This software has been tested to
work in the PCE emulator.