When I learned DG NOVA assembler in the mid-1970s, octal was it - it was everywhere. I
didn't see hexadecimal notation until 8-bit microcomputers started using it in the
late 1970s and early 1980s.
Just a change in culture, I'd suppose. Hex fits neatly into a byte, and we don't
seem to see computers with word sizes that aren't a multiple of 8 any more.
Erik <fair(a)netbsd.org>