View Single Post
Old 26th Jun 2010, 3:46 pm   #13
Parabola
Retired Dormant Member
 
Join Date: Sep 2008
Location: London, UK.
Posts: 117
Default Re: Test Card / Teletext Generator - Phase 1

Actually, I'm wrong (as usual). Having just been trying to bash my various scribbled notes together into something for future reference and sorting out the multitude of different sized TCF images that have been through Photoshop on the way to the final ROM image, I realise that my quoted 720 pixel figure for the active line at 625 was part of earlier calculations for a theoretical faster clock speed The active line pixel count with 625 lines at 12MHz is 625 pixels (square pixels). However, the total count of 768 for the entire line (64uS) is correct. Sorry

Maybe I will up the clock speed a bit then. Thanks to all for the input.

Parabola
Parabola is offline