| Classic Arcade Games from Dr. Beep |
Dr. Beep (Johan Koelman) has released 1K versions of two classic arcade games, Asteroids and Missile Command. These games are normal resolution games that fit in 1K (vs his Hi-Res 1K games). |
Timex/Sinclair 1000 |
| Coral Basic Interpreter |
Carlos Delhez, writer of Xtricator and Xtender ZX81 emulators, wrote a programming tool that provides an updated version of BASIC for the ZX81, Coral Basic Interpreter (CBI). CBI lets you enter BASIC programs without keyboard entry, meaning that all keywords need to be typed out. |
Timex/Sinclair 1000 |
| Dice Problems |
I’ve been interested in dice mathematically for years. In wargaming, you win or lose based on the results of a 6-sided die. A role-playing game that I used to tinker with used multiple 6-sided die instead of multiple-sided dice. Back then I wanted to determine a percentile based on a two-die roll. I wrote a |
Timex/Sinclair 1000 |
| Digital Antiquarian |
The Digital Antiquarian is a blog written by Jimmy Maher. His main interest is the history of interactive fiction, what was originally known as computer adventure games. He titled his blog with the tag line of “A history of computer entertainment and digital culture.” His blog covers the topic from as far back as 1966 |
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| Early Mathematical Articles |
As mentioned previously, I was drawn to computers for their mathematical side rather than games. When looking through the newsletters that David Anderson has scanned and posted to The Internet Archive, I ran across a number of math articles and I thought I would document them here. |
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| Editorial |
The hard copy of Issue #11 went well. There were a number of people that were part of the T/S group but not regular attendees to the Zoom meetings, for these folks it was a surprise to see the hard copy show up their mailbox. A few copies also made their way to a number |
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| Harry S. Bluston |
I have previously expressed my interest in using Sinclair computers for more serious work and not just playing games. I’ve been collecting any Sinclair related books that are more into the scientific side. While digging around the book archive of the “World of Spectrum” website, I found a couple of books that led me to |
Sinclair ZX81, Timex/Sinclair 1000 |
| Imre Auersbacher |
With the recent lunar eclipse (March 2025) I was thinking about astronomy software for the T/S 2068. One author that did a program for solar and lunar eclipses was Imre Auersbacher. |
Timex/Sinclair 2068 |
| Memocalc |
While trolling the Internet, I came across the ROM file for the Memotech Memocalc expansion unit. I’m always a sucker for another Sinclair spreadsheet, so I downloaded the ROM file and the manual. |
Timex/Sinclair 1000 |
| Memory Scan for the ZX81 |
n looking through the downloadable programs on timexsinclair.com, I found a memory scan program that provided a graphical view of the contents of memory. I thought I would try something similar for the ZX81. |
Timex/Sinclair 1000 |
| renum.pl |
As I was reading some computer history articles, I was thinking about porting some older BASIC software to Sinclair systems. I was looking at ELIZA, “The Oregon Trail”, and others. When looking at these programs, modifications must be made to convert the syntax of the BASIC programs to meet the syntax of Sinclair BASIC. |
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| Sinclair BASICs: DEF FN |
This is a look at the DEF FN keyword of Sinclair BASIC and its companion function FN because it was a feature I used very little, and that I recently dug into and found some surprises. |
Timex/Sinclair 2068 |
| SoftSync |
Sue Currier came from Australia to the United States to pursue a career in modeling. She was discovered by the Eileen Ford Agency in Melbourne. She flew to New York City to sign with them and worked with them from 1971 to 1974. In 1974, Sue married Ken Currier on the 86th floor Observation deck |
Timex/Sinclair 1000 |
| Sound Tester |
I thought about playing more with sound on the ZX81 or T/S 2068. The Zon X-81 and the T/S 2068 both use the AY-3-8910 Programmable Sound Generator (PSG) and they both interface with the PSG by using the PSG registers, so any sound settings will be usable on both. I tried the SOUND command on |
Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Timex/Sinclair Crossword |
A fun crossword featuring the Timex/Sinclair computers. |
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| US ZX81 and T/S 1000 Hardware |
I’m not much into hardware, but I believe that things should be documented. After some discussions during the T/S group Zoom meetings, I thought I would see about documenting some ZX81 and T/S 1000 hardware aspects. On the Sinclair ZX World forums there is a fair bit of information about ZX81’s. Those folks are much |
Sinclair ZX81, Timex/Sinclair 1000 |
| ZX81 Software Documents |
I like good documentation. With the QL, as I used different software, like the Small-C or C68 compilers, I reformatted their documentation with a word processor like OpenOffice. This produced a nice, professional looking document. |
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| ZXPaint3 |
I’ve been using the tool ZXPaintyOne to create ZX81 graphics. The tool creates a long string of numbers to represent the value of the characters painted on the screen. I wrote zxpaintl.c to take the output of ZXPaintyOne and create a screen file (.scr) that could be directly loaded into the ZX81. I wrote zxpaint2.c |
Timex/Sinclair 1000 |
