I am still unable to compile a working kernel on my Alpha system.
It is running 1.2D currently, and I cannot make 1.2G boot.

I have traced the hang to line 740 (or so) in machdep.c, at the
kmem_suballoc() call.

Here is the output from the broken and working kernels:

Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 1.2G (GESTEN) #3: Thu Jul 31 03:43:00 EDT 1997
    explorer@gesten.flame.org:/a/kechara/u1/OS/NetBSD/src/sys/arch/alpha/compile/GESTEN
Alpha PC AXPpci33 ("NoName"), 166MHz
8192 byte page size, 1 processor.
real mem = 67108864 (2072576 reserved for PROM, 65036288 used by NetBSD)

[HANGS HERE]

Working kernel:

Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 1.2D (GENERIC) #146: Wed Apr 23 07:43:57 EDT 1997
    cgd@bunnahabhain.pdl.cs.cmu.edu:/usr/src/sys/arch/alpha/compile/GENERIC
Alpha PC AXPpci33 ("NoName"), 166MHz
8192 byte page size, 1 processor.
real mem = 67108864 (2072576 reserved for PROM, 65036288 used by NetBSD)
avail mem = 51666944
using 793 buffers containing 6496256 bytes of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), 21066 (pass 2)
cpu0: VAX FP support, IEEE FP support, Primary Eligible
lca0 at mainbus0
pci0 at lca0 bus 0
ncr0 at pci0 dev 6 function 0: NCR 53c810 SCSI
ncr0: interrupting at isa irq 11
ncr0: restart (scsi reset).
scsibus0 at ncr0: 8 targets
sd0 at scsibus0 targ 0 lun 0: <SEAGATE, ST1480, 5736> SCSI2 0/direct fixed
sd0: sd0(ncr0:0:0): 5.0 MB/s (200 ns, offset 8)
412MB, 1476 cyl, 9 head, 63 sec, 512 bytes/sec
sio0 at pci0 dev 7 function 0: Intel 82378IB PCI-ISA Bridge (System I/O) (rev. 0x03)
vga0 at pci0 dev 8 function 0: S3 Trio32/64 (rev. 0x00)
wscons0 at vga0: console
de0 at pci0 dev 12 function 0 at isa irq 9
de0: 21140 [10-100Mb/s] pass 1.2
de0: address 00:40:05:21:05:db
de0: enabling Full Duplex 100baseTX port
isa0 at sio0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
lpt0 at isa0 port 0x3bc-0x3bf irq 7
pcppi0 at isa0 port 0x60-0x64
pckbd0 at pcppi0
pms0 at pcppi0
mcclock0 at isa0 port 0x70-0x71: mc146818 or compatible
root on sd0a swap on sd0b
mountroot: trying ffs...
root file system type: ffs
init: copying out path `/sbin/init' 11
de0: enabling 10baseT port