Thomas wrote: > There's a timing difference between even frames and odd fields in the > syncs generated at the field end. Non-interlaced video essentially > sends only even fields.
Was about to say the same thing. The standard 625 line frame (consisting of one odd and one even field) has several sync pulse bursts (taking up 15 of the 625 lines) to mark the start of the odd and even fields within. Non interlaced PAL is only sending single 312 line fields which always have the same sync pulses so there is no way a TV would be able to know which is meant to be an odd or even field because they aren't marked differently. Dave's TV must just be alternating between displaying it as an odd or even field itself. Colin ===== Quazar : Hardware, Software, Spares and Repairs for the SAM Coupe 1995-2008 - Celebrating 14 Years of developing for the SAM Coupe Website: http://www.samcoupe.com/
