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ZX81 35 years anniversary demo!
Posted: Thu Jan 14, 2016 7:55 pm
by nollkolltroll
I've been busy creating a demo for the unexpanded ZX81, but it's a bit different: it's an 8k ROM.
I present ZEDDY35 and hope you enjoy the show.
Yes, I am a bit early with the celebrations, the birthday was 5th March 1981, but I couldn't wait.
More technical details about the demo in the readme.txt inside the zip:
EDIT:
Uploaded a live capture to YouTube:
https://www.youtube.com/watch?v=-PfkhTsg7dc
Also added product to Pouet:
http://www.pouet.net/prod.php?which=66832
Re: ZX81 35 years anniversary demo!
Posted: Thu Jan 14, 2016 9:44 pm
by PokeMon
I will test it at the weekend on the ZXmore.
Re: ZX81 35 years anniversary demo!
Posted: Fri Jan 15, 2016 11:28 am
by zsolt
Hi Adam,
I tested it on EO 1v2
Is that what I should see?
I think I set something wrong...
Zsolt
Re: ZX81 35 years anniversary demo!
Posted: Fri Jan 15, 2016 11:44 am
by nollkolltroll
Is that the pal or ntsc version?
It is possible to fix in the video settings, v- or h-sync. I think I have tested with standard settings, but I might have moved one of them a pixel or two.
Real monitors do not exhibit that at all.
Edit: I had to move h-sync one key-klick to the left to get it working correctly.
Re: ZX81 35 years anniversary demo!
Posted: Thu Jan 21, 2016 1:09 pm
by Zschopower
nollkolltroll wrote:Is that the pal or ntsc version?
Please do not use PAL or NTSC in conjunction with ZX81. Both are abbreviations for
COLOR-TV standards.
PAL = Phase Alternating Line
NTSC = National Television System Committee or even better: Never Twice Same Color
ZX81 is a true binary computer: only black and white.
The difference between european and american versions of ZX81/TS1000 is the frame rate. 50Hz in Europe and 60Hz in America.
Peter
Re: ZX81 35 years anniversary demo!
Posted: Thu Jan 21, 2016 1:28 pm
by 1024MAK
Yes, I went off on one about that
here 
Mark
Re: ZX81 35 years anniversary demo!
Posted: Thu Jan 21, 2016 4:04 pm
by nollkolltroll
Zschopower wrote:nollkolltroll wrote:Is that the pal or ntsc version?
Please do not use PAL or NTSC in conjunction with ZX81. Both are abbreviations for
COLOR-TV standards.
PAL = Phase Alternating Line
NTSC = National Television System Committee or even better: Never Twice Same Color
ZX81 is a true binary computer: only black and white.
The difference between european and american versions of ZX81/TS1000 is the frame rate. 50Hz in Europe and 60Hz in America.
Peter
Yes, I am aware of that. BUT: most people are not into video-standards. It is easier to talk about PAL/NTSC with them, even if it is not correct.
In the future I will try to talk about 50/60Hz when doing zeddy-stuff.
Re: ZX81 35 years anniversary demo!
Posted: Fri Jan 29, 2016 8:10 pm
by lovesflying
Excellent job nollkolltroll ! Works great with the EightOne v1.2 emulator!
Your demo inspired me to create a 35 year demo using zx81 basic.....very basic.
So if anyone's curious I have attached the program to this post.
I think the EightOne emulator is great! Thanks Michael D Wynne!!!
I can play a .mp3 version of the program on my IPOD and it loads successfully onto the zx81!!!
Who would have ever thought that in 2016 one could create a program
on a current PC and transfer that same program onto a 35 year old zx81 computer!!!