TECO ^B on OS/8 and RT-11

According to the documentation for TECO v40: ^B <CTRL/B> (caret/B) is equivalent to the current date via the following equations: OS/8: ^B = (((month*32)+day)*8)+((year-1970)&7)+k where k = 4096 if year>1977 and k=0 otherwise RT-11: ^B = (((month*32)+day)*32)+year-1972 RSTS/E: ^B = ((year-1970)*1000)+day within year RSX-11: ^B = ((year-1900)*16+month)*32+day VAX/VMS: ^B = ((year-1900)*16+month)*32+day TOPS-10: ^B = (((year-1964)*12+month-1)*31+day-1) Notice how the year is added as the least significant bits for OS/8 and RT-11. For OS/8, you only get *3* bits for the year plus a high 4K bit set if the year is out of range? Does this mean years higher than 1977 are encoded as 4096+(year-1977)? For RT-11, notice how year-1972 is packed into *5* bits (0..31), so years after 1972+31=2003 start carrying over into the bits for the month and day. Can anyone with RT-11 or OS/8 and TECO v40 verify what is described above? -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>