Most of you probably don't know what a 'Cadmus' is. Chances are good that you even don't want to know what they are, since most of the people who worked with these machines don't want to remember them. Anyway, their rarity, their obscurity, and the lack of documentation make them an ideal target for freaks and retrocomputists seeking the ultimate adventure. On these pages, I tried to collect all the information about these machines I have.
Over the years, PCS built a couple of different machine lines, based on 680x0, Mips, and i860 processors (these are at least the ones I know!). Furtheron, I will only deal with the 9200/9600/9900 series which are 680x0-based and represent the oldest series of machines, with the earliest dating back to the first half of the eighties. PCS later sold the line to Digital-Kienzle, so you have a good chance of finding DEC logos on cards in your Cadmus...
MUNIX was available in two versions: MUNIX(/16) for the 68010-based machines and MUNIX/32 for the later 68020-based models. The binary format was upward compatible, i.e. MUNIX/16 binaries ran also on MUNIX/32, but not the other way around.
As the name 'Cadmus' already may tell, the machines were designed for graphics-oriented applications like DTP and CAD. PCS offered a lot of software to exploit the Cadmus' graphical capabilities, including something like a simple office suite. However, X11 was still in its infant state when the first Cadmus models came out, so most of these apps probably weren't X11-based and instead used the GDI/GKS libraries offered by PCS. There was also a 'Windowed Shell' allowing you to open multiple console windows on MUNIX/16 (I doubt this made much fun on a 2 MByte 68010 machine...). X was a later addon, and the latest X release offered by PCS I know of was X11R2.