In fact at that time, many TV set where PAL/SECAM but in most of the TV the PAL was disabled By a strap or a missing chip. For the hackers it was possible to open the TV remove /add the strap and get a PAL/SECAM tv There was no document on this modification and It was impossible to ask the client to open its TV and rummage inside :) SECAM for C64 (from this web site) http://mpc.fab.free.fr/commodore/pvic20.htm Computer opened with the secam board visible. http://mpc.fab.free.fr/commodore/photo8bits/vic20ouvert.jpg SECAM board added in VIC 20 / C64 http://mpc.fab.free.fr/commodore/photo8bits/vic20procepcarte.jpg the first version was just a transistor to invert the pal signal (added in the modulator) so it was possible to have a black and white image (ugly) [prototype] later this prototype was improved and sold with the VIC20 then came a PAL/SECAM converter, a huge box almost as thick as a C64 but flat so the c64 could be placed on top. (no images) (colors but bad quality) then this board was made such a way it could be fixed inside the C64 secam boards found on this web site: http://www.c-64.org/de/hardware2.html btw: I worked for procep from 1981 to 1985.. -- didier -----Message d'origine----- De : email@example.com [mailto:firstname.lastname@example.org] De la part de Anders Carlsson Envoyé : lundi 31 octobre 2011 11:40 À : email@example.com Objet : Re: C16/Plus4 Didier Derny wrote: > In 1984/1985 it was a problem, no room left to insert a quite large pal to > SECAM interface. On the topic of SECAM, is it true that a C64 equipped with PAL to SECAM interface outputs a worse RGB picture than what S-Video would do on a PAL monitor? Perhaps if the TED chip had built-in RGB output, it would have been more popular in France etc, but then again on a cheap low-end European market, not too many users in 1983/84 would have a TV with RGB SCART input anyway.. at least not outside France. However it is true that e.g. Acorn Electron has a TTL RGB output just like its big brother, the BBC Micro. For some reason, I consider the Commodore 16 and Acorn Electron classmates in terms of release date, capacities and relation to more expensive machines (Commodore 64 and BBC Micro, although of course the Plus/4 is more directly a big brother to the C16). Best regards -- Anders Carlsson Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2011-10-31 13:00:13
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