In article <199805250046.RAA03044@starwolf.com>,
The Grey Wolf  <greywolf@starwolf.com> wrote:
> 
> cool since the Antares can support 38400 quite easily and I could thus
> avoid overloading the silly ZS ports (though to NetBSD/sparc's credit,
> I haven't seen any ring buffer overflows since I upgraded to 1.3).

I hate to tell you this, but...

> ||___|    U.S.A.             |	7,8	Soldered chip 11 pins all 4 edges:
> |                            |		MFGR: ZILOG
> |     JAMES J. LUDEMANN      |		Z8523010VSC

Z85230 is still a silly ZS chip :-) And as you say later, it's four
ports (2 ZS chips of 2 ports each).

Good news is that the '230 has a deeper FIFO, so it should be better
than the stock ports. Also, writing a drievr should be easier, since you
just need a way to attack the existing zs driver to those chips.