I wonder what's the point. 8 bits is not enough to store most values for most applications, it's bad for timers and multiplication, it's just a big waste of CPU cycles in general. The more work CPU has to do, the less time it spends sleeping, which is bad for battery-powered embedded devices. Perhaps, it has its place somewhere, but realistically, an 8-bit CPU these days is very niche at best. Imho, it's not going to take off in mainstream embedded.
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