!!!How to find the revision number of Atari Basic

With the BASIC cartridge put into your 400/800 or BASIC switched on, type (e.g. after the READY prompt)

%%prettify 
{{{
PEEK(43234) 
}}}
/%

and then press RETURN.

The computer will give you an result.

||Result||Revision of BASIC||Comment
|162|Revision A|was sold as cartridge for ATARI 400 and 800
|96|Revision B|built into XL models (1200XL,600XL,800XL)
|234|Revision C|built into XE models (65XE,130XE,800XE)