Sinclair ZX80 / ZX81 / Z88 Forums

can you port it to android? Whilst I have written a couple native Android apps in the past, my limited free time would be the enemy here. It’s written in a platform technology optimised way to make the best of the Apple interface approach. Hence, it would be a mission to migrate to a solid maintain...

I doubt development will stop any time soon on EightyOne. However, it’s long overdue being ported from Borland Builder to another development environment to future proof ... well, its future. Hopefully when Paul is back online and settled from his move he can tweak it for you. In the meantime, if yo...

The experience with my iOS ZX81 emulator was that it ran without any problems, i.e no modified ROM, bar one point: If memory serves me, because I enabled the emulated ZXpand joystick support it assumed the persistent high-score saving functionality was available and crashed the game. So I ended up c...

Any explanation for the removal? Because the game represents simulated gambling and my Apple Developer account is registered to an individual instead of an organisation their rules do not permit it and they rejected updates until it was removed. I’m not prepared to register a company, then apply to...

marste wrote: ↑Sat May 25, 2019 12:33 pm

kpalser wrote: ↑Thu Mar 28, 2019 9:23 pm Hi Stefano,
Off topic - can I include your 1K chess port into my iOS ZX81 emulator?
Thanks,
Kevin

Ciao Kevin,
Sorry for late reply.
Sure you can use! Is an honor for me!
Thank you!
_Stefano

Thank you! Now in the latest version (1.6.0) on the App Store.

It’s been a while since I’ve posted on this topic thread. A new update (v1.6.0) has just been released on the App Store, which incorporates Chroma colour support. The main limitation still exists of not being permitted to load programs except those already included with the app. The Apple developer ...

Hi Stefano,
Off topic - can I include your 1K chess port into my iOS ZX81 emulator?
Thanks,
Kevin

I finally made contact with Russell: “Well I haven't done much programming for some years now, I kind of mostly trailed off with that around 2005/6. To be honest I was finding it a lot harder to do as I got older, and when it was just a hobby really it's hard not to drift onto other things. Probably...

Hi Dim, After you kindly responded in the ZX81 Owners Facebook group I started looking at the notes on the schematic and with the help of Sirmorris testing using his real ZON X-81 the following conclusions were reached for the port addresses: A0 to A3 are always high A4 can be low or high for ZON X-...

Hi Folks, I'd like to get in contact with Russell Marks, the author of the Z81 emulator (his code base was a starting point for other modern emulators): http://www.svgalib.org/rus/z81.html He doesn't seem to have been active since October 2004 according his change log. And his email address in the f...