# Dave Ditzel

> Dave Ditzel is a computer architect and entrepreneur who co-authored the 1980 RISC paper with David Patterson, led SPARC technology work at Sun, founded Transmeta and Esperanto Technologies, and served as an Intel vice president. His work connects instruction-set design, binary translation and energy-efficient parallel computing. He now describes himself as retired and pursuing personal projects; Esperanto has ceased operations, with its intellectual property acquired by Ainekko in 2025.

- **Role:** Retired; working on personal projects (self-described on LinkedIn)
- **Organizations:** Esperanto Technologies, Transmeta, Intel, Sun Microsystems, AT&T Bell Laboratories, ThruChip Communications
- **Education:** Undergraduate degrees in electrical engineering and computer science, Iowa State University, MS, electrical engineering and computer science; work on computer architecture, compilers and VLSI under David Patterson, University of California, Berkeley
- **Known for:** Co-authored the 1980 paper The Case for the Reduced Instruction Set Computer., Led work on the 64-bit SPARC ISA and SPARC processors at Sun Microsystems., Founded Transmeta, whose Crusoe and Efficeon processors deployed dynamic binary translation commercially.

## Career timeline

- **1978-1987** — Member of technical staff at AT&T Bell Laboratories; worked on C-oriented processors including CRISP.
- **1980** — Co-authored The Case for the Reduced Instruction Set Computer with David A. Patterson, published in October.
- **1987-1995** — Worked at Sun Microsystems; became CTO of the SPARC Technology Business and led development of the 64-bit SPARC ISA and processors.
- **1995** — Founded Transmeta, later known for Crusoe and Efficeon low-power x86-compatible processors.
- **2000** — Transmeta introduced Crusoe, using Code Morphing dynamic binary translation.
- **2007** — Founded ThruChip Communications to reduce energy in communication between silicon dies using inductive links.
- **2008-2013** — Vice president of Hybrid Parallel Computing at Intel; joined in March 2008.
- **2014** — Founded Esperanto Technologies and served as president and CEO.
- **2019-2022** — Served as executive chairman of Esperanto Technologies.
- **2021** — Presented Esperanto’s ET-SoC-1 architecture at Hot Chips 33.
- **2022-2025** — Founder and CTO at Esperanto Technologies.
- **2025** — Retired and began working on personal projects, according to his public professional profile.
- **2025-11** — Ainekko announced acquisition of Esperanto’s intellectual property and selected assets.
- **2026-08** — Delivered an Esperanto retrospective and AMA at Cool Chips - Hot Takes in Palo Alto.

## Achievements

- Co-authored the 1980 paper The Case for the Reduced Instruction Set Computer.
- Led work on the 64-bit SPARC ISA and SPARC processors at Sun Microsystems.
- Founded Transmeta, whose Crusoe and Efficeon processors deployed dynamic binary translation commercially.
- Founded Esperanto Technologies, which built a manycore programmable RISC-V AI computing chip.
- Delivered the 2022 MICRO-55 keynote The RISC Journey From One to a Million Processors.

## Latest updates

- **2026-08** — On August 25, delivered a career and Esperanto retrospective with an AMA in Palo Alto at Cool Chips - Hot Takes; recording published by AI Foundry in September 2026.
- **2025-11** — Ainekko announced acquisition of all Esperanto intellectual property and selected assets, with plans for an open silicon and software platform.
- **2025-08** — Public professional-profile records indicate retirement and a move to personal projects.

## Links

- LinkedIn: https://www.linkedin.com/in/dave-ditzel-7aa72b3

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Profile page: https://yespress.io/dave-ditzel
Published by YesPress — https://yespress.io
Last updated: 2026-10-24