Search found 70 matches

by kpalser
Thu Dec 08, 2016 9:36 am
Forum: Emulators
Topic: ZX81 emulator for iOS
Replies: 81
Views: 29656

Re: ZX81 emulator for iOS

One small question, I know a real ZX81 does not have a reset button, but is there a reset available in your emulator?
Yes, in the portrait orientation.
reset button.png
reset button.png (120.43 KiB) Viewed 2249 times
Kevin
by kpalser
Wed Dec 07, 2016 9:41 am
Forum: Emulators
Topic: ZX81 emulator for iOS
Replies: 81
Views: 29656

Re: ZX81 emulator for iOS

Tried on iPhone 5 and couldn't install. It's not compatible Consider this the stock answer ( also see the FAQ in http://zx81-ios.weebly.com ): The irony of not supporting older devices for an emulator of an old computer is not lost on the developer. The short answer: No plans to support anything be...
by kpalser
Tue Dec 06, 2016 11:47 pm
Forum: Emulators
Topic: ZX81 emulator for iOS
Replies: 81
Views: 29656

Re: ZX81 emulator for iOS

:oops: I've just had to resubmit again to Apple because the Software Farm game in-app purchases were not correctly linked in the first submission request even though the files and app logic are correct... It will take about 4 days to get this straightened out with Apple. In the meantime I hope there...
by kpalser
Tue Dec 06, 2016 11:07 pm
Forum: Emulators
Topic: ZX81 emulator for iOS
Replies: 81
Views: 29656

Re: ZX81 emulator for iOS

Actually how about the ability to save programs you type in? I'll give it some thought. There's certainly nothing in the Apple developer guide prohibiting saving your own programs. Probably more along the lines of a complete memory capture of the 16k of address space plus the registers rather than ...
by kpalser
Tue Dec 06, 2016 9:57 pm
Forum: Emulators
Topic: ZX81 emulator for iOS
Replies: 81
Views: 29656

ZX81 emulator for iOS

Hi all, Apple approved my ZX81 emulator for iOS today: http://zx81-ios.weebly.com Consider it just the first step of an app that I hope to extend with more functionality, software titles and eventually an interview section. Currently I'm working on a more game friendly version of the virtual keyboar...
by kpalser
Sat Dec 21, 2013 8:31 pm
Forum: Hardware
Topic: Very low signal on MIC port
Replies: 30
Views: 6336

Re: Very low signal on MIC port

Thanks for the information and suggestions. A little bit of background - I’m just trying to get wave characteristics that accurately represents the original device, flaws and all, for an emulator project. For the moment I’m holding off making any mods to the device. I did follow Mark's suggestion of...
by kpalser
Mon Dec 16, 2013 11:12 pm
Forum: Hardware
Topic: Very low signal on MIC port
Replies: 30
Views: 6336

Re: Very low signal on MIC port

In the event that my evening of experimenting might be useful to others googling this and subsequent similar threads ... My three ZX81 (like everyone else’s unmoded units) are producing a weak signal from the MIC port. Since I wanted to double check the documented: Each pulse is split into a 150us H...
by kpalser
Sun Dec 08, 2013 12:03 am
Forum: Emulators
Topic: Side margin with Z-Xtricator
Replies: 8
Views: 3184

Re: Side margin with Z-Xtricator

So after a week of evenings reviewing all timing and cycle calculations to try and account for my emulator having the equivalent of two character spaces in the left hand side (LHS) margin and six in the right (RHS), I decided to load Z-Xtricator up on a real ZX81… So obviously in the photos below I’...
by kpalser
Tue Nov 26, 2013 11:17 pm
Forum: Emulators
Topic: Side margin with Z-Xtricator
Replies: 8
Views: 3184

Re: Side margin with Z-Xtricator

Checked out Spud81 and it is the best screen centred emulator for Z-Xtricator. If you see the attached screenshot on another Software Farm hires game, in these cases Spud81 demonstrates a larger left margin and so with Z-Xtricator it looks squarely centred. (Not criticisng Spud81 - I think it is a s...
by kpalser
Mon Nov 25, 2013 9:44 pm
Forum: Emulators
Topic: Side margin with Z-Xtricator
Replies: 8
Views: 3184

Side margin with Z-Xtricator

Folks, To further my challenge of perfecting my zx81 emulator I shifted testing to focus on Z-Xtricator and its pseudo hires INT mode 2 routine. It has been an excellent exercise for identifying and correcting some flaws. Some questions: 1) Have any of you fired up Z-Xtricator on a real ZX81 recentl...