Way back, late 1980’s, I worked for AES Data. A Canadian company that was one of the early makers of word processing equipment. They had a cluster controller, the C20, and various Z80 based standalone devices. At one time they were also designing a Z8000 Multibus system to run Unix Sys V. CBC’s Venture made a program about about AES Data.
Ethernet was coming into popular use, and the C20 needed to add this capability. A team in Montreal was designing a 68000 board for the C20 to handle the interface. To get a jump start on software development, I was tasked with getting the protocol stack working on a Heurikon HK68K board along with an Ethernet controller.
Long story short, AES Data eventually went away. In the process of winding down the Toronto development lab in 1986, I bought 4-5 of the HK68K boards. At the time I had manuals, schematics and who knows what else. For a while at home I played with these, compiling Xinu on a Masscomp MC500 and loading it onto the HK68K via an Archive Scorpion streaming tape drive.
Fast forward to 2013 and here I am, trying to get one or more of these boards running. In the intervening years I had loaned/given away the manuals and the person was not responding to my attempts to get a copy. After some intensive searching on the WWW, I came across John Stewart who had posted a video of Heurikon’s production facility on YouTube. After running into dead-ends with the companies who serially took over the Heurikon support, I contacted him. He put an email out to the ex-Heurikon staff and several days later I received an email from Jeff Mattox, the designer of the board!
There was great amazement that one of these boards still existed, let alone 3 of them. Jeff very kindly sent me a manual, then schematics (with his notes on them) and lastly a manual for the Hbug monitor. I thought I had source code for this monitor but it seems someone else at AES Data decided to call their board monitor Hbug as well.