It claims itself as an "embedded" processor, so it likely just wasn't meant to run PC OSes. According to Wikipedia at least, Intel did not even expect the 286 t

It claims itself as an "embedded" processor, so it likely just wasn't meant to run PC OSes. According to Wikipedia at least, Intel did not even expect the 286 to be used for PCs, but for things such as PBXs. And ARM Cortex M still doesn't have an MMU either, for some applications you can just do without. Especially because both the 286 and this 376 beast did have segmentation, which could subsume some of the need for an MMU (separated address spaces, if you don't need paging and are content with e.g. buddy allocation for dividing available memory among tasks).