In message <199905120820.RAA16872@axp46.aist-nara.ac.jp>,
Toru Nishimura writes:

>Though I have no info. about the original 8530, my Personal DECstation
>(MAXINE) has a 85C30 chip which has 3 deep receive FIFO.  DEC3000/300
>has two 85C30s and I guess 3MIN and 3MAX+ have the same controller
>chips.  I donno why Mach source codes refer to Intel chip. 

Maybe because in the early 90s, it was a lot easier to get Intel
databooks than Zilog? I used an Intel databook to get info, cause
we had one  kicking around.

Just a guess, though.