A custom operating system spanning 120,000 lines of code emerged as the defining project for Terry A. Davis. Known as TempleOS, this public-domain platform served as the culmination of over a decade of solitary development. Davis designed the architecture to function as a modern iteration of the Commodore 64, utilizing a specialized programming language he created called HolyC.
Early Engineering Career
Born in West Allis in 1969, Terrence Andrew Davis grew up across several states as part of a family of eight. His interest in computing began in elementary school on an Apple II, progressing to assembly language on the Commodore 64 during his teenage years. In 1994, he completed a master's degree in electrical engineering at Arizona State University. He subsequently spent six years at Ticketmaster, where he managed systems on VAX machines.
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Following a shift in his mental health and subsequent diagnoses including schizophrenia, Davis moved away from conventional corporate engineering. His career path included periods at Xytec Corp, H.A.R.E., and Graphic Technologies. During these years, he focused on FPGA-based image processing and application development, eventually dedicating his efforts to the creation of his own software ecosystem.
The Architecture of TempleOS
TempleOS evolved through various iterations, beginning as J Operating System in 2004, then becoming LoseThos and SparrowOS before its final designation. The platform was built entirely in HolyC, a language Davis engineered as a flexible hybrid of C and C++. He intentionally omitted internet functionality, viewing the project as a biblical-themed environment intended to replicate the rapid development cycles of early computing.
Final Years
The later period of his life was marked by challenges, including homelessness and fluctuating mental health. Despite these difficulties, he maintained his commitment to his software projects and engaged with audiences through his online presence as a vlogger and programmer. In August 2018, at the age of 48, Davis died in The Dalles. He is buried at Memory Gardens Memorial Park.
Fast facts
- Born: 1969, West Allis
- Died: 2018, The Dalles
- Education: Arizona State University
- Notable Language: HolyC
- Major Project: TempleOS
- Former Employer: Ticketmaster
- Burial Site: Memory Gardens Memorial Park
Questions readers ask
What is TempleOS?
It is a public-domain operating system designed by Terry A. Davis, programmed in HolyC, and intended to serve as a modern version of the Commodore 64 environment.
What is HolyC?
HolyC is a proprietary programming language developed by Davis as a middle ground between the C and C++ languages.
Achievements
- Notable work: TempleOS
- Notable work: HolyC
- Affiliated with Ticketmaster
- Educated at Arizona State University
- Worked as programmer, computer scientist and television producer
