Hi,
this happens when booting -current on AS200:

--------------
NetBSD 1.3I (ALPHA) #1: Wed Jan 13 ....
    root@alpha:/<path>/ALPHA
AlphaStation 200 4/100, 100MHz
8192 byte page size, 1 processor
real mem = 100663296 (2088960 reserved for PROM, 98574336 used by NetBSD)
avail mem = 83787776
using 1203 buffers containing 9854976 bytes of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), 21064 (pass 3)
apecs0 at mainbus0: DECchip 21071 Core Logic chipset
apecs0: DC21071-CA pass 2, 64-bit memory bus
apecs0: DC21071-DA pass 2

fatal kernel trap:

    trap entry = 0x2 (memory management fault)
    a0         = 0xffffffff8028081c
    a1         = 0x1
    a2         = 0x1
    pc         = 0xfffffc0000481670
    ra         = 0xfffffc0000481668
    curproc    = 0xfffffc00004ef8e0
        pid = 0, comm =

panic: trap
Stopped in at Debugger+0x4: ret zero,(ra)
db>
--------------

(typed by hand, so maybe not 100% accurate).

0xffffc0000481670 seems to be in function badaddr_read..ng .

1.3.3 and 1.3.2 work fine on this machine.

regards,
chris