Guess what this might be ...

[PokeMon]

Guess what this might be ...

20170913_192205k.jpg (119.78 KiB) Viewed 2767 times

PS: I mean what the screen is showing, obviously it is a CRT monitor.

[sirmorris]

A polar bear during a snow storm?

Dense fog on the yorkshire moors?

More clues please Karl

[Andy Rea]

Is it colour combo white character on a white background...

[mrtinb]

No idea, but with you it's always exciting.

[PokeMon]

It is the sync circuit on the ZX8-CCB-SYNC, generating a valid screen when no video sync is available.
So during RUN in FAST mode or with ZX80.
I am experimenting with timings - so not sure if flickering can be really avoided.

Of course, showing the display contents is not possible with this simple circuit (no frame buffer).
But as for modern TVs who need a valid signal it will show the two small lines during automatic sync generation.

20170913_191510k.jpg (179.72 KiB) Viewed 2739 times

[sirmorris]

[Moggy]

I thought it was the winner of last years Turner prize.

[sirmorris]