You could try the -current aha284x.c driver in /sys/dev/isa.  It
requires a few other changes as well, to:
	/sys/conf/files
	/sys/dev/pci/files.pci
	/sys/dev/isa/files.isa

This driver works for me, but I'm the exception since I wrote the
thing.  It uses the MI aic7xxx code just like the ahc driver does.

I have
	ahe0 at isa? port 0x1c00 irq ?
in my config file, and
	scsibus0 at ahe0
to connect the scsi bus up.

>I have applied the 1594 patch to support an Adaptec 2842 VL-Bus SCSI2
>controller.  It seems to operate okay until I reboot.  The NetBSD loader doesn

One question.  Why the offset of one?

>#        size   offset    fstype   [fsize bsize   cpg]
>  a:    33087        1    4.2BSD     1024  8192    16   # (Cyl.    0*- 43*)
>  b:   131600    33088      swap                        # (Cyl.   44 - 218)
>  c:  2072511        1    unused     1024  8192         # (Cyl.    0*- 2755*)
>  d:  2072512        0    unused        0     0         # (Cyl.    0 - 2755)
>  e:  1331040   164688    4.2BSD     1024  8192    16   # (Cyl.  219 - 1988)
>  f:   576784  1495728    4.2BSD     1024  8192    16   # (Cyl. 1989 - 2755)
>  g:  1907824   164688    unused     1024  8192         # (Cyl.  219 - 2755)
>  h:  1331040   164688    unused     1024  8192         # (Cyl.  219 - 1988)

--Michael

--
Michael Graff <explorer@flame.org>        NetBSD is the way to go!
PGP key on a key-server near you!         Netshade the world!