> 	2a. A side problem is that the man page for the lms device
> driver says:
> 
> device lms0 at isa? port "IO_BMS0" tty irq 5 vector lmsintr
> 
> 	but a compilation of that kernel complains about "IO_BMS0"
> being undefined.  (I think I might have compiled a kernel with IO_BMS1
> but I can't remember offhand).
> 
> 

Apparently your two choices are:
IO_BMS2         0x238           /* secondary InPort Bus Mouse */


IO_BMS1         0x23c           /* primary InPort Bus Mouse */

I'll do something about the man page