| 1K Othello |
Not too long ago I discovered the Dr. Beep did a 1K version of Othello. I thought I would look into the game and see how good it is. The game will play either the white or the black side. It uses high resolution graphics to display the board. The whole game fits into 893 |
Timex/Sinclair 1000 |
| Book Review: ZX Spectrum Assembly Let’s Make a Game? |
I have long found it challenging to learn Z80 assembly language. I read Z80 Assembly Language Programming by Lance Leventhal and Programming the Z80 by Rodney Zaks. Both were good but were not specific to the ZX81, so it was difficult to apply what I learned to my computer. |
Sinclair ZX Spectrum, Timex/Sinclair 2068 |
| Boriel Basic for ZX Spectrum |
With a lot of Open Source programs, finding good documentation can be hard. Juan Duran has fixed that problem for Boriel’s ZX Basic with his recent book. The book was released in December 2023 in Spanish and in English in June 2024. The book is large with 678 pages. |
Sinclair ZX Spectrum, Timex/Sinclair 2068 |
| Dr. Lloyd Dreger - T/S 2068 Expert |
I have been active in the T/S community since I first joined a user group in 1986. I have subscribed to a number of Sinclair magazines and newsletters since 1982. When I started digging a bit into T/S 2068 assembly programming and the ROM, I was surprised to find the works of Dr. Lloyd Dreger. |
Timex/Sinclair 2068 |
| Gomoku on the ZX81 |
I recently started getting into the game of Gomoku and wrote a paper on the history of computer implementations of Gomoku. I ran across a number of version of Gomoku written in BASIC. |
Timex/Sinclair 1000 |
| How to Back Your Way Into Learning Z80 Assembly |
A bunch of years ago, in the process of building timexsinclair.com, I added some disassemblies of the Timex/Sinclair 2068 ROMs to the site. I was never too happy with them because there were whole passages without comments. A few years later, I added some new disassemblies, one by Bob Orrfelt, the other by Lloyd Dreger. |
Timex/Sinclair 2068 |
| Memotech Z80 Assembler |
One of the modules that Memotech created for the ZX81 was the Z80 Assembler that plugged into the back of ZX81. The assembler had a menu system that allowed the user to create, edit, list and compile z80 assembler programs. |
Timex/Sinclair 1000 |
| MSCRIPT |
MSCRIPT is the only word processor that uses the 64 character mode on the T/S 2068. When released it was also the most expensive word process for the T/S 2068. |
Timex/Sinclair 2068 |
| QZX Newsletter |
QZX newsletter was a Sinclair newsletter for folks that like HAM or amateur radios. The idea was to combine radios with Sinclair computers. |
Timex/Sinclair 1000 |
| T/S 1510 & Cartridge Clone |
When the T/S 1500 was released, Timex also released the T/S 1510 cartridge system. The T/S 1510 was a cartridge dock that plugged into a 1500 or 1000. Game cartridges were then plugged into the dock and when the 1500 was powered up, the game on the cartridge started up. For the 1000, a USR |
Timex/Sinclair 1000, Timex/Sinclair 1500 |
| 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 alternative to the disk systems that were once available for the Timex/Sinclair 2068. |
Timex/Sinclair 2068 |
| Three Games Ported from Speccy to T/S 2068 |
I had the urge to port a few more games from the Speccy to the T/S 2068. This time I wanted to do more than just a demo game. I browsed the web looking for Spectrum games with assembly source code. I ran across two programs from Jonathan Cauldwell, Area 51 and Turbomania. |
Sinclair ZX Spectrum, Timex/Sinclair 2068 |
| Timer in Assembly |
While working on a game project, I needed a way to time what a user was doing, all in Z80 assembly. The ZX81 does not have a clock mechanism, but it has something close. |
Timex/Sinclair 1000 |
| Tom Bent's Improved ROM |
In early 1985, Tom Bent released an EPROM with an upgraded version of the ZX81/T/S 1000 ROM. It was released as the “Sinclair ZX 8K ROM Upgrade”. The package contained an EPROM and an adapter board to fit the ROM into the socket of the old ROM. |
Timex/Sinclair 1000 |
| ZXBETA User Guide and Tutorial |
ZXBETA is a music tracker software for the ZX81 with the ZonX-81 sound system. The user guide and tutorial was published on my website a few months after the last issue of ZXzine, but I thought I would document it here for those that might have missed the announcement. |
Timex/Sinclair 1000 |
