On Monday 16 December 2002 07:27 am, Ron Stodden wrote: > Murray J. Root wrote: >> On Sun, Dec 15, 2002 at 10:47:39AM +1100, Ron Stodden wrote: >>> Even more correct would be to add 30% to both H & V pixels to allow for >>> the necessary blanked overscan during hsync and vsync pulses. This >>> is because the H & V oscillators never stop.
>>> See the video timings howto. >> Which has absolutely nothing to do with how much RAM the video mode >> takes. > Which has absolutely everything to do with how much RAM the video mode > takes,. > The necessary raster overscans are also placed in video memory, because, > as I said (and you missed) the oscillators do not stop during blanking > periods. RT Video Timings HOWTO. Not on modern video chips. The oscillators continue to churn, however they're not gated through to the address counters. No point in chewing extra bandwidth and making extra heat which a very simple gating arrangement can avoid it. Cheers; Leon
