device          mcd0    at isa? port 0x320 irq 10

I don't know what you expect that to do, but it's wrong.  Quoting from
another kernel config (ALL):

device		mcd0	at isa? port 0x300 bio irq 10 vector mcdintr

It should be obvious what you need to do.

The other glitch is fixed; you just need `#include <machine/cpu.h> in
ns_ip.c..


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