Originally Posted by Retro-Nerd
Sorry Supamax. This is nonsense. All computer/consoles from that time outputs a 240/288p signal for lores games. It's a non-standard PAL/NTSC signal, today also comparable with Low-definition television. Don't mix up the interlaced TV standard with this.
No, all PAL TVs could accept interlaced-only signals.
Via SCART/composite/RGB socket/RF (modulator), only 576i was possible.
Sinclair Spectrum, QL, C64, Amiga 500, game consoles, VCRs, ... all have video exits @ 15 KHz 50Hz interlaced.
Uhm, I see now that perhaps I didn't make myself clear: I'm not saying that the equipment above was "really" outputting a screen with 576 lines. What I'm saying is that the (lower) resolution was outputted in the form of a 576i (interlaced, always interlaced, never progressive) signal, so that it could be accepted by TVs, monitors (CM8833 class, not VGA 31 KHz of course), etc.