Eleven statistical programs for the Timex/Sinclair 1000, 1500 and ZX81 microcomputers are listed and described in a 167-page book. The programs can run relatively large data sets using less than 16K of memory. Accurate calculations are performed with difference formulas and provisional mean formulas.
ANOVA programs for Timex/Sinclair 1000, 1500, and ZX81 microcomputers Read More »
How would you like reverse video on your TV screen when using your TS1500? Not only is it possible, but it’s also ridiculously simple. All it involves is installing an SPST switch, and soldering two wires. Yes, you can use the TS1500 with John Oliger’s TMS9918A video upgrade. The required modification to the computer’s NMI
TS1500 Video Topics Read More »
VU-CALC for the ZX81/TS1000-1500 is a good program, but it has some limitations. Fortunately, modifications can easily be made which overcome these three limitations.
Upgrading VU-Calc 1000 Read More »
If you have a Memotext word-processor module and 64K RAM, you undoubtedly have already made use of its powerful “text” files mode. Memotext also supports “data” files, organized in six fields per file, up to 31 characters per field. Entering data files is just as easy and fast as text, thanks to the re-defined keyboard,
Translations: Memotext to ZX Pro/File Read More »
Here is how to make a copy of the “Memotext” word-processor, which you can save to tape and reload later into RAM or NVM (non-volatile memory) in the 8-16K range.
Translations: Memotext in RAM Read More »
The purpose of this article is to present some alternatives to this command, and in this process maybe show some ways of handling your display file.
Clear That Screen! Read More »
This chapter will list some requirements for the place where we will put the machine code, and will show you how to find a memory location that meets those requirements.
Basil’s Compendium: Where to Put the Program Read More »
Timex Portugal moving ahead with Timex 2068; bug in TS1500 ROM LOAD routine; errors in John Oliger’s article in 2/4; Pro/File 2068 books shipped; questions about A&J Microdrive; Spectrum ROMs; corrections to “Clear That Screen”, articles in vol 1; sources for replacement chips.
In any number of monitoring and/or control uses for your ZX/TS, you may find that using a TV set to check on your system is inconvenient or impractical. This would be so, for example, in outdoor or dirty environments or when you simply wish to check the status of one or two system parameters without
Port Projects: Get the LED-OUT Read More »
This installment will teach you how to enter an actual program in machine code.
Basil’s Compendium: LET A= … Read More »
