< use my m.2 and m.3 to check out OS9. I don't think m.1 can use it. There < to be a respectable amount of software that supports OS9. < ISTR also that there were other platforms that used it . Any idea what < were ? SWTP and other SS50 bus machine with 6809s in them. there was a 6809 S100 CPU that could run it. Generally speaking Moto based systems were not on my hot list back then (there was some nice stuff though!). The 6809 however did catch my eye as a pretty decent 8bit bus cpu from moto. Allison