3 chip video output (OT, I guess)

SOunds interesting. The SAA5243 is much easier to find in the UK, I think. It is, I've had five 5243s and no 5246s from scrap TV's recently. How compatible are the 5243 and 5246 in software (as in register bit allocations, etc). Wildly different? A couple of extra bits in the registers to set PAL/NTSC and free run (VCO) and a bit for VCR which was a pin on the 5231. Also a new register with status bits for sync type (525/625), data quality and signal quality. Software for the 5243 should run on the 5246 if you set all the unused bits as per the data sheet. It does, it also has the video output drivers on board so needs far fewer external components. Adding the SAA5231 to an SAA5243-based display is overkill unless you need the genlock capability or you also want to decode teletext data. A As all my teletext chips come from scrap TVs I don't bother removing the 5231, only the Safari control processor if it's fitted. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. _____________________________________________________________________ This message has been checked for all known viruses by Star Internet delivered through the MessageLabs Virus Scanning Service. For further information visit http://www.star.net.uk/stats.asp or alternatively call Star Internet for details on the Virus Scanning Service.