Mostek in the 1980s was a top producer of DRAM, testing every Z80 microprocessor at their Fairchild Sentry 610 test system. The room was equipped to test a wide range of components. Mostek also held a second-source license for popular CPU chips. The Fairchild Sentry 610 was a state-of-the-art, versatile system, capable of handling high-speed MaS/LSI tests. The 10 Mhz device speed was impressive for its time, and troubleshooting was complex. The test heads utilized analog circuits for component testing, offering quick set-up and versatility. Mostek’s in-house custom testers were another highlight, showcasing their dedication to innovation and efficiency.
https://mtsi.substack.com/p/testing-the-z80-chip-with-a-1970s