You can put your ZX81 programs online for free on GitHub.io; example Aritm - mental calculation

[MOB-i-L]

You can run my "Aritm - mental calculation" online on https://mobluse.github.io/zx81js/zx81kb ... tm.tzx.zip. Aritm has also been published on this site earlier https://www.sinclairzxworld.com/viewtop ... f=6&t=4694.

The site where it's linked from is on https://mobluse.github.io/zx81js/.

The forkable FOSS source code (GPLv2+) for the site is on https://github.com/mobluse/zx81js.

The FOSS ZX81 BASIC source code (GPLv3+) for Aritm is on https://github.com/mobluse/aritmjs/blob ... m-zx81.bas.

I hacked the original JavaScript code from https://www.zx81stuff.org.uk/zx81/jtyone.html so that it can be run in a subdirectory on GitHub, which has the advantage that others that wish to make their ZX81 software runnable online can use my github as a template or fork it on GitHub, then modify. My site uses zx81x2.rom v. C (AKA Big Bang), which means that BASIC programs run much faster (twice as fast).

Aritm is also runnable in BASIC online on other sites, but for other retro computers:
https://cx16forum.com/forum/viewtopic.p ... 686#p26686
https://bc3c.orbin.se/
https://calormen.com/jsbasic/ (Select a sample... Aritm - Mental calculation)

Aritm is also available for other computers and graphing calculators: https://aritm.orbin.se/ (In Swedish, but can be translated to any language, use e.g. Google Translate.)

[sboisvert]

VERY cool!