Delete comment from: Ken Shirriff's blog
That CAD workstation is in deed a Calma machine. Calma was started in sunnyvale in the 60's by husband and wife Calvin and Irma (CalMa is a contraction). The machine was called a GDS : graphic Design System and had a proprietary operating system and data format GDS Stream format. Version 2 (GDS-II) of that format is still in use today for mask making for integrated circuits. The machine was essential a Data General Nova with a Hazeltine terminal and a second graphics display. The whole thing is purely a vector based drawing system originally designed to make geographic drawings. The general purpose vector operations could be used to build anything and it was soon discovered that this was ideal to make chip layout. By the late 70's every semiconductor manufacturer in the world was running on these things. I used one in the early 90's.
There is a movie (Brainstorm) where they use one of these systems. It was very impressive for 1970's technology. https://www.youtube.com/watch?v=pDi7N2a41Fk
As for the ULA : that looks like an AMI 10000 or earlier series sea-of-gates array. it could be an IIL (integrated injection logic) array. Those were Signetics i believe.
May 6, 2022, 1:11:51 PM
Posted to Inside a counterfeit 8086 processor