The Sinclair QL Forum

Derek_Stewart wrote: Fri May 09, 2025 8:47 am Nothing wrong, just I did not know what you were talking about.

In general, on a standard QL, the MODE command accepts any number, but the required value is 4 or 8 depending on the TV or Monitor mode.

TV mode: MODE 8 - 8 colours, resolution: 256x256
Monitor Mode: MODE 4 - 4 colours, resolution: 512x256

This is documented in the QL Usr Guide, Online Superbasic Manual.

There is a MODE 2 in the Atari Emulator, but no one uses Atari QL it seems, except me.

Thanks for the specific info.
Let me try something...

Effectively,
mode 2 "works fine".
How the OS works inside to accept this value, no idea.
I guess it change it to the highres taking some bits from the value. What means is that mode 2 doesn't exist but the value is accepted.

And from here, is why I assumed the mode 2 is "a valid one", also -1, 655.... all numbers inside a int value. Highers will produce overflow of the stack XD

So if you all tell me that there are only 2 modes (4 & 8), I will try to remember it in order to refer them properly.
But the value 2 was accepted by the OS (from here my mistake).

Thanks both of you