Jeff Burrell

Jeff’s first computer was a Sinclair ZX-81 that was purchased while he was in the US Air Force stationed in the UK. At that time, he was a technician working on advanced microwave satellite communications equipment and had access to a Hewlett-Packard minicomputer with a FORTRAN compiler.

This, along with his programming experience in college, led him to purchase the ZX-81 when he saw it advertised in a British electronics magazine. Over the five or so years that he used that computer, I learned to program in BASIC and hand-assembled machine code and to use the features and limitations of the “little black door-stop” to the fullest.

While stationed at Offutt AFB, a co-worker that was moving up to a CP/M based computer from his TS-2068. When he saw the 2068, he knew he wanted it. He had been impressed by the functionality that Clive Sinclair had managed to squeeze into the ZX-81 and from examining the documentation of the TS-2068, he saw that this was a machine with much promise. He bought the machine and started programming right away and found, as expected, that there was much to like about the 2068.

Location: Minnesota

Articles (8)

TitleAuthor(s)PublicationDate
Fun With Hardware Part I – The Platform
Homebrew memory and IO expansion device for the 2068.
ZXir QLive Alive!Spring 2000
Input/Output
Letters from Ed Kingsley, Al Boehm, Jose Moreno, David Solly, Peter Liebert-Adelt, Jack Boatwright, Jeff Burrell, Don Oviatt, Earl Kielglass,...
ZXir QLive Alive!Spring 1999
Input/Output
Letters from Joe Rampolla, Antonio Castro, Jack Boatwright, Jim Mach, William Girnius, Larry Kenny, Rod Gowen, Al Feng, Mike Kandrac,...
ZXir QLive Alive!Winter 1999
Input/Output
Letters from Paul Anderson, Dane Stegman, Jack Boatwright, Joan Kealy, Paul Anderson, Andy Barber, Peter Liebert-Adelt, Luke Perry, Don Lambert,...
ZXir QLive Alive!Spring 2000
Input/Output
Letters from Joe Rampolla, John Pegram, Al Feng, David Leech, Jeff Burrell, Rod Gowen, Dane Stegman, Robert Webster, Tom Parks,...
ZXir QLive Alive!Summer 2000
Input/Output
Letters from Don Lambert, Peter Liebert-Adelt, Robert Gilbert, Jeff Burrell, Joe Rampolla, Al Feng, Robert Swoger, Louis Florit, David Solly,...
ZXir QLive Alive!Winter 2000
Input/Output
Letters from will Knight, Joan Kealy, Tim Swenson, John Donaldson, Leon Howell, Don Lambert, Jay Shepard, Jose Moreno, Paul Harris,...
ZXir QLive Alive!Autumn 2001
The TS Pico: A Modern Storage System for the Timex/Sinclair 2068
The TS Pico story starts in 2021, when Ricardo Calcagno emailed me to ask if anyone had designed a modern...
David AndersonZXzineJanuary 2025

User Groups (1)

Videos (51)

TitleDateWatch
Timex Sinclair Online User Group May 21 2023
Adam gave an update on the activities of the Albuquerque Timex Sinclair User's Group, made up of Ryan Gray, Carl...
May 21, 2023
Timex Sinclair Online User Group Meeting April 13, 2025
Jeff gave us an overview of the TS 2060 hardware design and features. We discussed the design of the enclosure...
April 13, 2025
Timex Sinclair Online User Group Meeting April 16, 2023
Chuck Durang, author of the Timex/Sinclair 1000, 1500 and 2068 user manuals, join us to talk about his experiences.
April 16, 2023Watch ↗
Timex Sinclair Online User Group Meeting August 20, 2023
We chatted about the TS Pico, a device developed by Ricardo Colagno, Gustavo Pane, Tim H and Jeff Burrell. It...
August 20, 2023
Timex Sinclair Online User Group Meeting December 1, 2025
In this meeting, we reviewed the history of the Timex Computer Corporation and development of the Timex/Sinclair 1000, Timex/Sinclair 1500...
December 1, 2025
Timex Sinclair Online User Group meeting December 17, 2023
João Diogo Ramos, of the Load ZX Spectrum museum, discussed the status of two pending projects, including the SCLD documentation...
December 17, 2023
Timex Sinclair Online User Group Meeting December 18, 2022
Discussion about Bob Swoger, a long time supporter of the Timex Sinclair community.
December 18, 2022Watch ↗
Timex Sinclair Online User Group meeting December 5, 2022
Adam Trionfo dug into the FDD 3/3000 disk images, examining a home-made version of Q*Bert.
December 5, 2022
Timex Sinclair Online User Group Meeting February 22, 2026
On this 42nd anniversary of Timex's departure from the computer industry, we discussed the announcement, the context and the impact...
February 22, 2026
Timex Sinclair Online User Group Meeting February 5, 2024
Jeff Burrell discussed the potential options for a "next" TS2068 using either software or hardware.
February 5, 2024
Timex Sinclair Online User Group meeting January 1, 2024
Adam and Ryan considered creating a podcast focused on unusual stories of how people used their Timex and Sinclair computers.
January 1, 2024
Timex Sinclair Online User Group Meeting January 15, 2023
Tim Swenson gave a demonstration of Sinclair QL emulators, including showing off some microdrive cartridges.
January 15, 2023Watch ↗
Timex Sinclair Online User Group Meeting January 18, 2026
Chris Boisvert, one of the original creators of Byte Power 1st Class Magazine, joined us. He explained how he and...
January 18, 2026
Timex Sinclair Online User Group Meeting July 16, 2023
David talked a bit about the connection between the Koala Pad and Sinclair computers. David also gave an update on...
July 16, 2023Watch ↗
Timex Sinclair Online User Group Meeting June 18, 2023
Richard Booth, author of Applied Sinclair: Subroutines for the Mathematically-Minded, joined us.
June 18, 2023Watch ↗
Timex Sinclair Online User Group Meeting June 2, 2025
We discussed the original ZX81 manual in this meeting's "Book Nook" and talked about the coordination for VCF Midwest.
June 2, 2025
Timex Sinclair Online User Group Meeting June 5, 2023
David gave an update on archiving tapes, documents, newsletters and more. Jeff Burrell showed the latest developments and demonstrated functions...
June 5, 2023
Timex Sinclair Online User Group meeting June 6, 2022
This meeting features Thomas B. Woods, Wes Brzozowski, Jeff Mazur, Tim Horner, Ryan Gray, Jeff Burrell and Stewart Newfeld.
June 6, 2022
Timex Sinclair Online User Group Meeting May 5, 2023
We talked about updates to the website, recovered programs and what the members of the group have been working on.
May 1, 2023Watch ↗
Timex Sinclair Online User Group Meeting May 5, 2025
Our meeting included introductions from four new-to-the-Zoom meeting members, as well as updates on Greg Bennett's Wordle program and the...
May 5, 2025
Timex Sinclair Online User Group Meeting November 16, 2025
We discussed shared community history and technical knowledge. We talked about the evolution of user groups from 1980s, who often...
November 16, 2025
Timex Sinclair Online User Group Meeting November 2, 2021
Online meeting of Timex/Sinclair computer enthusiasts. Includes presentations by Stewart Newfeld (of Zebra Systems) and Jeff Burrell.
November 2, 2021
Timex Sinclair Online User Group Meeting November 20, 2022
Mark Kloosterman showed us some of his large Sinclair and Timex/Sinclair collection.
November 20, 2022Watch ↗
Timex Sinclair Online User Group Meeting November 3, 2025
We showed off a seasonally appropriate turkey program and shared updates on projects.
November 3, 2025
Timex Sinclair Online User Group Meeting November 7, 2022
Members caught us up on their projects. Adam, Carl and Ryan met in person.
November 7, 2022Watch ↗
Timex Sinclair Online User Group Meeting October 7, 2024
We talked with David Solly about his new Spectrum Next. Paul DeMelto talked about his use of vintage computers and...
October 7, 2024
Timex Sinclair Online User Group Meeting September 15, 2024
Ingo Schmied shows his KiloZed, a pumped up and moderately larger Sinclair ZX81, and Joe Vandezande talked about his process...
September 15, 2024
Timex Sinclair Online User Group meeting September 25, 2022
We watched David as he tried to operate the ZESarUX emulator in real time and at full speed, encountering all...
September 25, 2022
Timex Sinclair Online User Group Meeting September 4, 2023
We were joined by Steve North, a comedian and comic coach who, in the early 1980s, wrote four games for...
September 4, 2023
Timex Sinclair Online User Group Meeting, March 17, 2024
Our discussion included emulator usage, Baud Day and the TS-1510
March 17, 2024
Timex Sinclair Online Users Group October 7, 2024
David and Joe discussed recovering old tapes. Joe described using a homemade dehydrator for 3D printer filaments to salvage tapes....
October 7, 2024
Timex Sinclair User Group Meeting March 3, 2025
We discussed potential upgrades to the TS-Pico and PicoVideo, audio mods for the 2068, mods to improve the ZX81/TS1000, and...
March 3, 2025
Timex Sinclair User Group November 19, 2023
Ricardo Calcagno, Gustavo Pane, Jeff Burrell and David Anderson demo and discuss the TS Pico interface for the Timex/Sinclair 2068....
November 19, 2023
Timex/Sinclair Online User Group Meeting April 26, 2026
VCF East: Heathkit H11, an Apple I (real or repro?), a swatting evacuation, and the show's first-ever Timex table. Plus...
April 26, 2026
Timex/Sinclair Online User Group Meeting April 6, 2026
Ingo's keycap Kickstarter funded 7x in five days. Dr. Beep releases 150 ZX81 games on itch.io.
April 6, 2026
Timex/Sinclair Online User Group meeting August 21, 2022
In this week's meeting of our group, we were joined by Ryan Gray, a Timex enthusiast. Ryan has resurrected a...
August 21, 2022
Timex/Sinclair Online User Group Meeting August 4, 2025
Discover the ZX81 programming journey of Steven Reid, from his first game 'Water Bug' to the Ultima-inspired 'Gem Quest', pushing...
August 4, 2025
Timex/Sinclair Online User Group meeting August 8, 2022
In this week's meeting of our group, we were joined by Tim Ward, a Timex enthusiast. Tim was instrumental in...
August 8, 2022
Timex/Sinclair Online User Group Meeting January 3, 2022
We talked about creating multi-ROM cartridges, the possibility of an auto-boot Spectrum ROM cartridge and more.
January 3, 2022
Timex/Sinclair Online User Group meeting July 11, 2022
In this week's meeting, we talked about the huge amount of documentation Jack Boatwright preserved.
July 11, 2022
Timex/Sinclair Online User Group meeting July 24, 2022
Jaroslav Švelch, PhD, is head of the Prague Game Production Studies group at Charles University in Prague, Czech Republic. He...
July 24, 2022
Timex/Sinclair Online User Group Meeting July 7, 2025
James Martin restored a Timex Sinclair 2068 with display issues. Group discussed TS2060 modernization project, planned VCF Midwest 2025 logistics,...
July 7, 2025
Timex/Sinclair Online User Group Meeting June 22, 2025
Tim Swenson discussed his recent participation in a QL forum meeting; we talked about Forth, chatted about the ZX Spectrum...
June 22, 2025
Timex/Sinclair Online User Group Meeting March 15, 2026
We talked about archiving milestones, tape recovery techniques, emulator development, preservation concerns, and community history.
March 15, 2026
Timex/Sinclair Online User Group Meeting March 2, 2026
Our meeting covered keyboard Kickstarter plans, Pascal compilers, AI-assisted coding, TS-Pico debugging, and RAM expansion techniques.
March 2, 2026
Timex/Sinclair Online User Group meeting March 7, 2022
Greg Bennett talks about his implementation of Wordle on the ZX81, Jeff Burrell talks about his work on using UnoDOS...
March 7, 2022
Timex/Sinclair Online User Group meeting May 15, 2022
In this week's meeting of our group, we were joined by Tim Horner (from New Zealand!), Ingo Schmied, Ryan Gray,...
May 15, 2022
Timex/Sinclair Online User Group Meeting May 17, 2026
Fort Worth user group history, semiconductor fab war stories, the 2060 expansion board project, a Baudot telegraph keyboard interface, Joust...
May 17, 2026
Timex/Sinclair Online User Group Meeting November 17, 2024
David, Joe , and Adam discussed a 1983 Timex joystick, noting its unique features and considering a teardown to explore...
November 17, 2024
Timex/Sinclair Online User Group Meeting October 6, 2025
Alger Salt joined and took us back to the early 1980s, when he and a colleague built an analog interface...
October 6, 2025
Timex/Sinclair Online User Group Meeting Sept 1, 2025
We chatted about preserving Asa Gordon's program from his time at NASA, modern hardware projects, and other Timex/Sinclair topics.
September 1, 2025

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