> No (I hope not), the CRTC timing is programmed to get this value. > PAL defines 313 rasterlines for one half-image (actually 625 per full > image) with 64us (i.e. 64 cycles) per rasterline. That results in 20032 > cycles per screen - 49.920Hz. The second half-image is defined as 312 > raster lines, which makes 19968 cycles - 50.080 Hz. Both together > are 40000 cycles for two screens. So small derivations are ok. Just a clarification. PAL standard is given as _example_ only, the PET - in general - is _not_ according to PAL. Especially the PET displays a full image for what PAL defines as half-image, and the number of lines does not change from image to image as with the PAL half-images. André -- Neu: GMX De-Mail - Einfach wie E-Mail, sicher wie ein Brief! Jetzt De-Mail-Adresse reservieren: http://portal.gmx.net/de/go/demail Message was sent through the cbm-hackers mailing listReceived on 2010-12-20 22:00:36
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