Text mode ZX Spectrum mini demo

Some folks I know spent long summer days on recovering a ZX Spectrum program hidden as a bonus track of OK Computer 2017 OKNOTOK Radiohead Album. It was recorded on compact cassette, so probably it was ready to run on original Speccy with good cassette reader.

It's kind of bleeping text mode demo that reminds me fiddling with such things in past.

So, I've tried to make mini with similar look and feel, but with nowadays technology like HTML and Javascript stack.

https://cdn.rawgit.com/uones/oknotok-jsdemo/master/index.html

Initial part need key press to continue. Closing window will end show. Enjoy! ;)