I’m sitting in a building built by Honeywell in Phoenix in 1980. I hired on at this facility in 1974 to work on the GCOS 3 OS and HW.
I worked with some of the Xerox engineers after the take-over.
We migrated GCOS 3 to GCOS 8 in the late 1970’s. GCOS 8 included new-fangled features such as “virtual memory” and “segmentation”. For several years, I was the plant instructor on the new hardware architecture as well as my design duties. My students included all the new hires in SW and HW.
I just installed a GCOS 8 system on a hardware emulator which is hosted on a RHEL 6 Linux system hosted on a KVM virtual machine on an Intel based hardware platform designed and built by Bull, a French company.
That's cool, what's it like? Is it a command line O/S, or does it have a GUI?
Is it Unix-like?