http://www.tumblr.com/tagged/6809 The spirit of 6502 ?- clean instruction set on economical processor ?- was inherited to Acorn’s RISC Machine, that is currently known as ARM. The Acorn was a huge 6502 user and also a developer of extender (co-processor) of the 6502; they should have known the 6502 quite deeply.
http://www.ot1.com/arm/armchap1.html As described earlier, these were for a processor which retained the ethos of the 6502 but in a 32-bit RISC environment,