Russian ATM Screen Preservation (ZX-Evo)

[PeterJ]

Apologies if I have missed something here, but is the only way of getting screens from emulators, as PNG from Unreal at the moment?

[Alone Coder]

You can switch pages in UnrealSpeccy manually to save the actual picture data from memory, but UnrealSpeccy doesn't allow to save the current palette...
Maybe Deathsoft will add a special function if you write him? deathsoft [a] yandex ru

[moroz1999]

I don't have a ZX Evo, so I can't test, but I asked Sashapont to test, and he said it works on his ZX Evo.
In UnrealSpeccy in ATM3 mode it also works well.

https://www.youtube.com/watch?v=Ip0HvPs ... e=youtu.be - strange, this is how it works for me. Same thing if I take Unreal Speccy, select ZX-Evo there and try to load it.

UnrealSpeccy shows pictures with values 0,96,160,255 (palette "Alone", looks right) or with 0,118,205,255 (palette "Pulsar", looks wrong).

Ok, thanks, I'll take 0,96,160,255 then for ATM BMP files.

[Alone Coder]

Maybe it depends on firmware? I see you have BASE&TS.
That's how it works in UnrealSpeccy 0.39.0 from NedoOS repository (the detect also affects 3-color pictures):
https://youtu.be/nE43nwp0V8M
Similar ATM2 detection routine is also present in ACNews and maybe somewhere else. You can open MCX sources in ALASM, the cursor in the source just points to it.

[moroz1999]

It may easily be the problem of firmware indeed. Hires itself is working fine in ANSI viewer, I've selected ATM2 80*25 mode and it worked.
Thanks for examples, now I now how images should look like, I can now implement it in viewer.

[Alone Coder]

Also tried:
- the same emulator in ATM2 mode
- UnrealSpeccy 0.38.0 in ATM3 mode
- Pentagon 2.666LE
All of them show pictures correctly.

[Alone Coder]

Added a patch to UnrealSpeccy 0.37.1CFIX to save the palette when you save a snapshot: http://alonecoder.nedopc.com/zx/US0371FIX.ZIP
It's just 3 lines in snapshot.c, you can copy it in any other version: http://alonecoder.nedopc.com/zx/US0371FIXSRC.ZIP
There are 4 bytes per palette entry, only one is used, and the format is unusual gg0rr0bb.

[PeterJ]

Thanks [mention]Alone Coder[/mention],

When I start taking screens for ZXDB I will use this version.