The 1K RAM on the ZX81 was not a lot to work with. A number of programs were written to fit in the restricted space but the real solution was more memory. In addition to the Sinclair and Timex/Sinclair RAM packs, many solutions were available, up to 64K RAM.
RAM Packs and Memory Expansion for the ZX81 and TS1000 Read More »
In my previous post, I had revised my converter to use the LM1881 dedicated sync separator. Results, unfortunately, were poor. So, I went back to the data sheets for the AD724 RGB to NTSC/PAL Encoder and the LM1881 Video Sync Separator. Poring over them revealed I’d benefit from a few more capacitors. I also switched from a 3.58mhz
Adventures in 2068 Video, Part II Read More »
John Coffey wrote this note to his customers, in part to explain why it was a few months late. by John Richard Coffey I became interested in computers in 1974 when I saw some of the first Apples demonstrated at a mall in my hometown of Columbus, Indiana. I learned a little BASIC then. Later
A Brief History of JRC Software Read More »
The following magazines on archive.org are fully indexed for all issues available:
Magazines in archive.org indexed as of Nov 27, 2019 Read More »
Dave Ketchum, an actor, writer and director, was also a Timex Sinclair user. If you’ve seen Get Smart in re-runs or have seen the remake, you’ve seen him: he played Agent 13. In his review of Thomas Woods‘ ZX-Data Finder in issue 3 of Timex Sinclair User, Ketchum alluded to his background in mentioning that
A Timex for Agent 13 Read More »
The Timex/Sinclair 2068 is full of design compromises and shortcomings and the quality of the video signal is one the most annoying. When it was new and connected to a TV, the RF modulator and overall poor bandwidth of TVs did a lot to mask the problem. 2068 owners had two alternatives: composite video or
Adventures in 2068 Video Read More »
Even though there’s a small technical inaccuracy in the article, it’s interesting to read that the first data recorder was a TS 1000. Eisenbarth’s discovery of the Timex Sinclair, a small DOS-based [sic] computer that came with a thermal printer, … provided the great breakthrough. By the early 1980s, they had learned how to graph
The First Drag Racing Data Recorder Was a Timex/Sinclair 1000 Read More »
Here are many of the documents I’ve added to archive.org recently. AERCO FD-68 manual Articles from Computer Monthly Articles from Computer Shopper Gesso Products – DOCK IT EPROM Programmer Manual and 2068 ROM Disassembly John L. Oliger prices lists and manuals Machine Code And Better BASIC RMG Enterprises price lists and newsletter The Sinc Times
Additions to Archive.org Read More »
About the same time Sinclair brought the ZX-80 to the US, advertisements for the MicroAce appeared in some publications. The MicroAce was an unauthorized clone of the ZX-80 that became authorized via a copyright lawsuit.
MicroAce and Sinclair Read More »
David Stephenson looks back at home-computer based Lunar Landers, and offers up a new one.
A New Lunar Lander for the ZX81 / Timex Sinclair 1000 Read More »
Behold the glory of the Timex/Sinclair 1000 in 1982. The power is within your reach!
Timex/Sinclair Commercial Read More »
Hello! This site will be all about the Sinclair and Timex/Sinclair computers of the early 1980s. I’m just getting started, so there’s not a lot here yet. You may want to take a look at the bibliography: it’s 1700+ articles and books published from 1980 to the mid-90s. If you have something you want to
