Ok, after digging around through my various sources, here is a 
preliminary list of machines which will work under _some_ -current kernel 
(i.e. GENERIC, ADBTEST, etc.):

Fully working machines (i.e. ADB, video, disk)
==============================================

SE/30
Mac II
IIx
IIcx
IIci
IIsi
IIvi
IIvx
LCII,P400/405/430
LCIII,P450
LC520
LC550,P550
MacTV
P460/465/467
P520
P560
P600/600CD


Partially working machines (i.e. broken disk, cpu not fully supported)
======================================================================

Q630
Q650
Q660av
PB520
PB540
PB550c

Serial console only machines (i.e. broken ADB and/or video, working disc)
=========================================================================

PB145
PB160
PB165
PB170
PB180
Classic II,P200
Color Classic

Partially working, serial console only machines (i.e. cpu not fully supported)
==============================================================================

Q605
LC475,P475/476


The final version of this list will include all of the standard info 
(like the status of ADB, SCSI, video, etc.)  I would like some feedback 
on this info here, though.  Specifically:

1) Are there any machines I've left out?
2) Are there any machines in the wrong place?
3) Is there a more useful organization of categories?

Please keep in mind that no one that I know of has built a working 
1.2-current kernel, so this list is a little inaccurate until the first 
1.2-current GENERIC and ADBTEST kernels are available.

Later.

-- 
Colin Wood                                      ender@is.rice.edu
Consultant                                        Rice University
Information Technology Services                       Houston, TX

P.S.  Bob Nestor helped me a lot with this list.  Thanks, Bob!