>256 colors with Indivision for A1200?

[Thomas]

and nigher resolutions

Indivision is the only scandoubler which supports the HighGfx monitor driver which allows to use resolutions of 1024x768. So effectively the Indivision *does* allow to use higher resolutions.

Using a DBLNTSC wit the Indivision is slow.

For DblNTSC you don't need the Indivision. This mode can be displayed on a PC monitor without a scandoubler. And it is always slow, with or without the Indivision.

[Thomas]

I've always found that an interlaced screen at the same res and colors is faster than a native dblscan or productivity.  I'm assuming then using the de-interlacing function of the indivision will in practice therefore give you faster display at the same res and color depth and refresh rate

Certainly interlace is faster than dbl because dbl has to transfer twice as much data in the same time as interlace. Therefore the CPU has only half of the cycles to access chip-ram.