With Jason's recently committed bus_dma framework ...

NetBSD 1.3E (compile) #10: Tue May 26 11:22:06 EDT 1998 
matt@baker:/var/compile 
DECstation 5000/240 (3MAXPLUS) 
real mem = 100663296 
avail mem = 86851584 
using 2457 buffers containing 10063872 bytes of memory 
mainbus0 (root) 
cpu0 at mainbus0: MIPS R3000 CPU Rev. 3.0 with MIPS R3010 FPC Rev. 4.0 
L1 cache: 64kb Instruction, 64kb Data. 
tc0 at mainbus0: 25 MHz clock 
ioasic0 at tc0 slot 3 offset 0x0 
le0 at ioasic0 offset 0xc0000 priority 4: address 08:00:2b:39:f7:d7 
le0: 32 receive buffers, 8 transmit buffers 
scc0 at ioasic0 offset 0x100000 priority 6 
scc1 at ioasic0 offset 0x180000 priority 5: console 
mcclock0 at ioasic0 offset 0x200000 priority 0: mc146818 or compatible 
asc0 at ioasic0 offset 0x300000 priority 3: target 7 
asc1 at tc0 slot 2 offset 0x0 (bus speed: 25 MHz) : target 7 
fta0 at tc0 slot 0 offset 0x0: DEC DEFTA TC FDDI SAS Controller 
fta0: FDDI address 08:00:2b:a0:1f:0d, FW=0.7a, HW=2, SMT V7.2 
fta0: FDDI Port = S (PMD = ANSI Single-Mode Type 1) 
Beginning old-style SCSI device autoconfiguration 
boot device: <unknown> 
nfs_boot: trying DHCP/BOOTP 
nfs_boot: BOOTP server: 0x
nfs_boot: my_name=baker 
nfs_boot: my_addr=0x
nfs_boot: my_mask=0xfffffe00 
nfs_boot: gateway=0x
root on XXX:/other/clients/baker/root 
fta0: Link Unavailable 
fta0: Link Available

Ping times are horrible (considering the ENTIRE cache is flushed
multiple times for transmit and receive).  But it does run.

-- 
Matt Thomas               Internet:   matt@3am-software.com
3am Software Foundry      WWW URL:    http://www.3am-software.com/bio/matt/
Nashua, NH                Disclaimer: I disavow all knowledge of this message