With the good news about the hanging problem solved, I pulled in today's
sup (Fri Apr 9) and built a GENERIC kernel.  That booted up fine with
my Friday Mar 26 user-land.  I then went to /usr/src and did a "make
build."  It didn't get very far before I had a panic. Here is my dmesg:

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[ preserving 307712 bytes of netbsd ELF symbol table ]
consinit: not using prom console
Copyright (c) 1996, 1997, 1998, 1999
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 1.4_ALPHA (GENERIC) #1: Fri Apr  9 18:54:30 EDT 1999
    root@pc164sx:/fsys3/src/sys/arch/alpha/compile/GENERIC
Digital AlphaPC 164SX 533 MHz, 531MHz
8192 byte page size, 1 processor.
real mem = 67108864 (1957888 reserved for PROM, 65150976 used by NetBSD)
avail mem = 53616640
using 795 buffers containing 6512640 bytes of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), PCA56 (unknown minor type 2)
cia0 at mainbus0: DECchip 2117x Core Logic Chipset (Pyxis), pass 1
cia0: extended capabilities: 1<BWEN>
cia0: using BWX for PCI config access
pci0 at cia0 bus 0
pci0: i/o enabled, memory enabled
bha0 at pci0 dev 5 function 0: BusLogic 9xxC SCSI
bha0: interrupting at eb164 irq 9
bha0: model BT-948, firmware 5.07B
bha0: sync, parity
bha0 targ 0: sync, offset 15, period 100nsec
scsibus0 at bha0: 8 targets, 8 luns per target
sd0 at scsibus0 targ 0 lun 0: <MICROP, 3243-19   1128RV, 28RV> SCSI2 0/direct fixed
sd0: 4095MB, 3956 cyl, 19 head, 111 sec, 512 bytes/sect x 8388315 sectors
sio0 at pci0 dev 8 function 0: Contaq Microsystems 82C693 PCI-ISA Bridge (rev. 0x00)
pciide0 at pci0 dev 8 function 1: Contaq Microsystems CY82C693 IDE Controller
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
wd0 at pciide0 channel 0 drive 0: <IBM-DHEA-38451>
wd0: drive supports 16-sector pio transfers, lba addressing
wd0: 8063MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 16514064 sectors
wd0: 32-bits data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
pciide1 at pci0 dev 8 function 2: Contaq Microsystems CY82C693 IDE Controller
pciide1: hardware does not support DMA
pciide1: primary channel wired to compatibility mode
atapibus0 at pciide1 channel 0
cd0 at atapibus0 drive 1: <GCD-R580B, , 1.03> type 5 cdrom removable
cd0: 32-bits data port
cd0: drive supports PIO mode 3, DMA mode 1
cd0(pciide1:0:1): using PIO mode 3
ohci0 at pci0 dev 8 function 3: Contaq Microsystems 82C693 PCI-ISA Bridge (rev. 0x00)
ohci0: couldn't map interrupt
de0 at pci0 dev 9 function 0
de0: interrupting at eb164 irq 8
de0: DEC DE500-BA 21143 [10-100Mb/s] pass 3.0
de0: address 00:00:f8:1a:2a:e0
de0: enabling 10baseT port
isa0 at sio0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com0: console
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
lpt0 at isa0 port 0x3bc-0x3bf irq 7
pckbc0 at isa0 port 0x60-0x64
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
isabeep0 at pcppi0
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
mcclock0 at isa0 port 0x70-0x71: mc146818 or compatible
WARNING: can't figure what device matches "SCSI 0 108 0 0 0 0 0"
root device: wd0a
dump device (default wd0b): 
file system (default generic): 
root on wd0a dumps on wd0b
root file system type: ffs

fatal kernel trap:

    trap entry = 0x2 (memory management fault)
    a0         = 0x0
    a1         = 0x1
    a2         = 0xffffffffffffffff
    pc         = 0x0
    ra         = 0x0
    curproc    = 0xfffffc0002dda008
        pid = 249, comm = sh

panic: trap
syncing disks... 60 60 54 48 39 18 done
rebooting...

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