NTSC/PAL/SECAM & PERITEL?
If you do not know what these acronyms refer to, please read the article "NTSC/PAL/SECAM/PERITEL" in the knowledge base first.
This SECAM model available in Q4 1984 drastically reduced the total cost of owner ship, compared to a PAL Atari 800XL with additional (separate) RGB video converter.
The SECAM Atari 600XL was announced and listed in advertisements in magazines but eventually, it was never produced; after some delay, the SECAM Atari 800XL was finally available in France, but months after the PAL Atari 800XL. Unlike the PERITEL Atari 800, the video signal available on the PERITEL socket of the SECAM Atari 800XL is not limited to 8 but to 128 colours. Unlike the PERITEL Atari 800, the video signal on the PERITEL socket is not RGB but video composite aka CVBS.
PAL vs. SECAM versions
Inside the machine
Using "PEEK" commands in BASIC to find out about the OS, Basic and NTSC/PAL versions.
For your information, the results are:
PEEK(53268) = 1 [PAL/SECAM]
PEEK(65528) = 140 [Not a 400/800]
PEEK(65527) = 2 [XL OS Rev. 2, 1983-05-10, 800XL(most)/65XE(most)/130XE(most)]
PEEK(43234) = 234 [Atari BASIC Rev. C]