>Number:         8361
>Category:       port-i386
>Synopsis:       i386 GENERIC nca1 config file entry causes boot-time hang
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-i386-maintainer (NetBSD/i386 Portmaster)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Sep  9 12:50:00 1999
>Last-Modified:
>Originator:     Chris G. Demetriou
>Organization:
Kernel Hackers 'r' Us
>Release:        NetBSD 1.4-branch (from CVS), updated Sept. 8, 1999
>Environment:
System: NetBSD bacon 1.4.1 NetBSD 1.4.1 (GENERIC_CGD) #1: Wed Sep 8 15:37:08 PDT 1999 cgd@bacon:/a/src/src-1-4-branch/sys/arch/i386/compile/GENERIC_CGD i386


>Description:
	The 1.4.x i386 GENERIC config file, and config files which are
	simple modifications of it, include the line:

	nca1    at isa? iomem 0xd8000 irq 5

	I recently tried to add a 3c905C ethernet adapter to my
	system (HP Kayak XAs) which uses a kernel config slightly
	modified from GENERIC.  With the new ethernet adapter
	in the system, the kernel would hang while autoconfiguring.
	Without the new adapter, it would boot fine.  (This was true
	whether or not the kernel recognized the 3c905C as an 'ex' --
	it happened with kernels before and after 3c905C support
	was added to 'ex', and with kernels with no 'ex' support at all.)

	I added printfs to subr_autoconf.c:mapply(), to print the name
	of the driver whose match routine was be called, and this
	indicated that the nca match, in particular for nca1, was the last
	thing to be invoked before the system hung.

	I then removed nca1 from the config file and the resulting
	kernel would boot fine.

	My kernel config (after removal of nca1):

#	$NetBSD: GENERIC,v 1.231.2.2 1999/06/21 14:23:49 perry Exp $
#
#	GENERIC -- everything that's currently supported
#

include "arch/i386/conf/std.i386"

maxusers	32		# estimated number of users

# CPU support.  At least one is REQUIRED.
#options 	I386_CPU
#options 	I486_CPU
options 	I586_CPU
options 	I686_CPU

# CPU-related options.
#options 	MATH_EMULATE	# floating point emulation
#options 	VM86		# virtual 8086 emulation
options 	USER_LDT	# user-settable LDT; used by WINE
# eliminate delay no-ops in I/O; recommended on all but very old machines
#options 	DUMMY_NOPS

# delay between "rebooting ..." message and hardware reset, in milliseconds
#options 	CPURESET_DELAY=2000

# Misc. i386-specific options
options 	XSERVER		# X server support in console drivers
#options 	XSERVER_DDB	# PF12 gets you into DDB when X is running

# This option allows you to force a serial console at the specified
# I/O address.   see console(4) for details.
#options 	"CONSDEVNAME=\"com\"",CONADDR=0x2f8,CONSPEED=57600
#	you don't want the option below ON iff you are using the
#	serial console option of the new boot strap code.
#options	CONS_OVERRIDE	# Always use above! independent of boot info

# The following options override the memory sizes passed in from the boot
# block.  Use them *only* if the boot block is unable to determine the correct
# values.  Note that the BIOS may *correctly* report less than 640k of base
# memory if the extended BIOS data area is located at the top of base memory
# (as is the case on most recent systems).
#options 	REALBASEMEM=639		# size of base memory (in KB)
#options 	REALEXTMEM=15360	# size of extended memory (in KB)

# Standard system options

options 	UCONSOLE	# users can use TIOCCONS (for xconsole)
options 	INSECURE	# disable kernel security levels

options 	RTC_OFFSET=0	# hardware clock is this many mins. west of GMT
options 	NTP		# NTP phase/frequency locked loop

options 	KTRACE		# system call tracing via ktrace(1)

options 	SYSVMSG		# System V-like message queues
options 	SYSVSEM		# System V-like semaphores
options 	SYSVSHM		# System V-like memory sharing
#options 	SHMMAXPGS=1024	# 1024 pages is the default

#options 	LKM		# loadable kernel modules

# Need a large message buffer; machine has lots of hardware.
options 	MSGBUFSIZE="(256 * 1024)"

# Diagnostic/debugging support options
options 	DIAGNOSTIC	# cheap kernel consistency checks
#options 	DEBUG		# expensive debugging checks/support
options 	KMEMSTATS	# kernel memory statistics (vmstat -m)
#options 	DDB		# in-kernel debugger
#options 	DDB_HISTORY_SIZE=100	# enable history editing in DDB
#options 	KGDB		# remote debugger
#options 	"KGDB_DEVNAME=\"com\"",KGDBADDR=0x3f8,KGDBRATE=9600
#makeoptions	DEBUG="-g"	# compile full symbol table

# Compatibility options
options 	COMPAT_NOMID	# compatibility with 386BSD, BSDI, NetBSD 0.8,
options 	COMPAT_09	# NetBSD 0.9,
options 	COMPAT_10	# NetBSD 1.0,
options 	COMPAT_11	# NetBSD 1.1,
options 	COMPAT_12	# NetBSD 1.2,
options 	COMPAT_13	# NetBSD 1.3,
options 	COMPAT_43	# and 4.3BSD
options 	COMPAT_386BSD_MBRPART # recognize old partition ID

options 	COMPAT_SVR4	# binary compatibility with SVR4
options 	COMPAT_IBCS2	# binary compatibility with SCO and ISC
options 	COMPAT_LINUX	# binary compatibility with Linux
options 	COMPAT_FREEBSD	# binary compatibility with FreeBSD

# Executable format options
options 	EXEC_ELF32	# 32-bit ELF executables (SVR4, Linux)

# File systems
file-system 	FFS		# UFS
file-system 	EXT2FS		# second extended file system (linux)
file-system 	LFS		# log-structured file system
file-system 	MFS		# memory file system
file-system 	NFS		# Network File System client
file-system 	CD9660		# ISO 9660 + Rock Ridge file system
file-system 	MSDOSFS		# MS-DOS file system
#file-system 	FDESC		# /dev/fd
#file-system 	KERNFS		# /kern
#file-system 	NULLFS		# loopback file system
#file-system 	PORTAL		# portal filesystem (still experimental)
#file-system 	PROCFS		# /proc
#file-system 	UMAPFS		# NULLFS + uid and gid remapping
#file-system 	UNION		# union file system
#file-system	CODA		# Coda File System; also needs vcoda (below)

# File system options
#options 	QUOTA		# UFS quotas
#options 	FFS_EI		# FFS Endian Independant support
options 	NFSSERVER	# Network File System server
#options 	EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
				# immutable) behave as system flags.
options		BUFCACHE=20

# Networking options
#options 	GATEWAY		# packet forwarding
options 	INET		# IP + ICMP + TCP + UDP
#options 	MROUTING	# IP multicast routing
#options 	NS		# XNS
#options 	NSIP		# XNS tunneling over IP
#options 	ISO,TPIP	# OSI
#options 	EON		# OSI tunneling over IP
#options 	CCITT,LLC,HDLC	# X.25
#options 	NETATALK	# AppleTalk networking protocols
#options 	PPP_BSDCOMP	# BSD-Compress compression support for PPP
#options 	PPP_DEFLATE	# Deflate compression support for PPP
#options 	PPP_FILTER	# Active filter support for PPP (requires bpf)
#options 	PFIL_HOOKS	# pfil(9) packet filter hooks
#options 	IPFILTER_LOG	# ipmon(8) log support

# Compatibility with 4.2BSD implementation of TCP/IP.  Not recommended.
#options 	TCP_COMPAT_42

# These options enable verbose messages for several subsystems.
# Warning, these may compile large string tables into the kernel!
options 	EISAVERBOSE	# verbose EISA device autoconfig messages
options 	PCIVERBOSE	# verbose PCI device autoconfig messages
#options 	PCMCIAVERBOSE	# verbose PCMCIA configuration messages
options 	SCSIVERBOSE	# human readable SCSI error messages
options 	USBVERBOSE	# verbose USB device autoconfig messages

options 	NFS_BOOT_BOOTP,NFS_BOOT_BOOTPARAM

#
# wscons options
#
# builtin terminal emulations
#options 	WSEMUL_SUN		# sun terminal emulation
options 	WSEMUL_VT100		# VT100 / VT220 emulation
# different kernel output - see dev/wscons/wsdisplayvar.h
options 	WS_KERNEL_FG=WSCOL_GREEN
#options 	WS_KERNEL_BG=WSCOL_BLACK
# compatibility to other console drivers
options 	WSDISPLAY_COMPAT_PCVT		# emulate some ioctls
options 	WSDISPLAY_COMPAT_SYSCONS	# emulate some ioctls
options 	WSDISPLAY_COMPAT_USL		# VT handling
options 	WSDISPLAY_COMPAT_RAWKBD		# can get raw scancodes
# see dev/pckbc/wskbdmap_mfii.c for implemented layouts
#options 	PCKBD_LAYOUT="(KB_DE | KB_NODEAD)"
# allocate a number of virtual screens at autoconfiguration time
#options 	WSDISPLAY_DEFAULTSCREENS=4

# Kernel root file system and dump configuration.
config		netbsd	root on ? type ?
#config		netbsd	root on sd0a type ffs
#config		netbsd	root on ? type nfs

#
# Device configuration
#

mainbus0 at root

#apm0	at mainbus0			# Advanced power management


# Basic Bus Support

# PCI bus support
pci*	at mainbus? bus ?
pci*	at pchb? bus ?
pci*	at ppb? bus ?

# PCI bridges
pchb*	at pci? dev ? function ?	# PCI-Host bridges
pceb*	at pci? dev ? function ?	# PCI-EISA bridges
pcib*	at pci? dev ? function ?	# PCI-ISA bridges
ppb*	at pci? dev ? function ?	# PCI-PCI bridges
# XXX 'puc's aren't really bridges, but there's no better place for them here
puc*	at pci? dev ? function ?	# PCI "universal" comm. cards

# EISA bus support
eisa*	at mainbus?
eisa*	at pceb?

# ISA bus support
isa*	at mainbus?
isa*	at pceb?
isa*	at pcib?

# PCMCIA bus support
pcmcia*	at pcic? controller ? socket ?
pcmcia*	at tcic? controller ? socket ?

# ISA PCMCIA controllers
pcic0	at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000
pcic1	at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000
tcic0	at isa? port 0x240 iomem 0xd0000 iosiz 0x4000

# PCI PCMCIA controllers
pcic0	at pci? dev? function ?

# ISA Plug-and-Play bus support
isapnp0	at isa?

# ISA Plug-and-Play PCMCIA controllers
pcic*	at isapnp?

# Coprocessor Support

# Math Coprocessor support
npx0	at isa? port 0xf0 irq 13	# x86 math coprocessor


# Console Devices

# ISA console.  You can only configure one of these!
#pc0	at isa? port 0x60 irq 1		# pccons generic PC console driver
#vt0	at isa? port 0x60 irq 1		# PCVT console driver

# Keyboard layout configuration for pccons
#options 	FRENCH_KBD
#options 	FINNISH_KBD
#options 	GERMAN_KBD
#options 	NORWEGIAN_KBD

# wscons
pckbc0	at isa?			# pc keyboard controller
pckbd*	at pckbc?		# PC keyboard
# "opms" should not be enabled together with "pms" or "pmsi"
#pms*		at pckbc?		# PS/2 mouse for wsmouse
#pmsi*		at pckbc?	# PS/2 "Intelli"mouse for wsmouse
opms*		at pckbc?		# backwards compatible PS/2 mouse
vga0		at isa?
vga*		at pci?
pcdisplay0	at isa?			# CGA, MDA, EGA, HGA
wsdisplay*	at vga? console ?
wsdisplay*	at pcdisplay? console ?
wskbd*	at pckbd? console ?
#wsmouse*	at pms?
#wsmouse*	at pmsi?

pcppi0	at isa?
sysbeep0	at pcppi?

# Serial Devices

# PCI serial interfaces
com*	at puc? port ?			# 16x450s on "universal" comm boards
cy*	at pci? dev ? function ?	# Cyclades Cyclom-Y serial boards

# ISA Plug-and-Play serial interfaces
com*	at isapnp?			# Modems and serial boards

# PCMCIA serial interfaces
com*	at pcmcia? function ?		# Modems and serial cards

pcmcom*	at pcmcia? function ?		# PCMCIA multi-port serial cards
com*	at pcmcom? slave ?		# ...and the slave devices

# ISA serial interfaces
#options 	COM_HAYESP		# adds Hayes ESP serial board support
com0	at isa? port 0x3f8 irq 4	# Standard PC serial ports
com1	at isa? port 0x2f8 irq 3
com2	at isa? port 0x3e8 irq 5
#com3	at isa? port 0x2e8 irq 9
#ast0	at isa? port 0x1a0 irq 5	# AST 4-port serial cards
#com*	at ast? slave ?
#boca0	at isa? port 0x100 irq 5	# BOCA 8-port serial cards
#com*	at boca? slave ?
#tcom0	at isa? port 0x100 irq 7	# TC-800 8-port serial cards
#com*	at tcom? slave ?
#rtfps0	at isa? port 0x1230 irq 10	# RT 4-port serial cards
#com*	at rtfps? slave ?
#cy0	at isa? iomem 0xd4000 irq 12	# Cyclades serial cards


# Parallel Printer Interfaces

# PCI parallel printer interfaces
lpt*	at puc? port ?			# || ports on "universal" comm boards

# ISA parallel printer interfaces
lpt0	at isa? port 0x378 irq 7	# standard PC parallel ports
lpt1	at isa? port 0x278
lpt2	at isa? port 0x3bc


# SCSI Controllers and Devices

# PCI SCSI controllers
adv*	at pci? dev ? function ?	# AdvanSys 1200[A,B], 9xx[U,UA] SCSI
adw*	at pci? dev ? function ?	# AdvanSys 9xxUW SCSI
ahc*	at pci? dev ? function ?	# Adaptec [23]94x, aic78x0 SCSI
bha*	at pci? dev ? function ?	# BusLogic 9xx SCSI
isp*	at pci? dev ? function ?	# Qlogic ISP [12]0x0 SCSI/FibreChannel
ncr*	at pci? dev ? function ?	# NCR 53c8xx SCSI
pcscp*	at pci? dev ? function ?	# AMD 53c974 PCscsi-PCI SCSI

# EISA SCSI controllers
ahb*	at eisa? slot ?			# Adaptec 174[02] SCSI
ahc*	at eisa? slot ?			# Adaptec 274x, aic7770 SCSI
bha*	at eisa? slot ?			# BusLogic 7xx SCSI
uha*	at eisa? slot ?			# UltraStor 24f SCSI

# PCMCIA SCSI controllers
aic*	at pcmcia? function ?		# Adaptec APA-1460 SCSI

# ISA Plug-and-Play SCSI controllers
aha*	at isapnp? 			# Adaptec AHA-154[02
aic*	at isapnp?			# Adaptec AHA-1520B

# ISA SCSI controllers
aha0	at isa? port 0x330 irq ? drq ?	# Adaptec 154[02] SCSI
aha1	at isa? port 0x334 irq ? drq ?
ahc0	at isa? port ? irq ?		# Adaptec 284x SCSI
aic0	at isa? port 0x340 irq 11	# Adaptec 152[02] SCSI
bha0	at isa? port 0x330 irq ? drq ?	# BusLogic [457]4X SCSI
bha1	at isa? port 0x334 irq ? drq ?
nca0	at isa? port 0x360 irq 15	# Port-mapped NCR 53C80 contoller
#nca1	at isa? iomem 0xd8000 irq 5	# Memory-mapped controller (T128, etc.)
sea0	at isa? iomem 0xc8000 irq 5	# Seagate/Future Domain SCSI
uha0	at isa? port 0x330 irq ? drq ?	# UltraStor [13]4f SCSI
uha1	at isa? port 0x340 irq ? drq ?
wds0	at isa? port 0x350 irq 15 drq 6	# WD7000 and TMC-7000 controllers
wds1	at isa? port 0x358 irq 11 drq 5

# SCSI bus support
scsibus* at adv?
scsibus* at adw?
scsibus* at aha?
scsibus* at ahb?
scsibus* at ahc?
scsibus* at aic?
scsibus* at bha?
scsibus* at isp?
scsibus* at nca?
scsibus* at ncr?
scsibus* at pcscp?
scsibus* at sea?
scsibus* at uha?
scsibus* at wds?

# SCSI devices
sd*	at scsibus? target ? lun ?	# SCSI disk drives
st*	at scsibus? target ? lun ?	# SCSI tape drives
cd*	at scsibus? target ? lun ?	# SCSI CD-ROM drives
ch*	at scsibus? target ? lun ?	# SCSI autochangers
ss*	at scsibus? target ? lun ?	# SCSI scanners
uk*	at scsibus? target ? lun ?	# SCSI unknown


# IDE and related devices
# PCI IDE controllers - see pciide(4) for supported hardware.
# The 0x0001 flag force the driver to use DMA, even if the driver doesn't know
# how to set up DMA modes for this chip. This may work, or may cause
# a machine hang with some controllers.
pciide* at pci ? dev ? function ? flags 0x0000

# ISA Plug-and-Play IDE controllers
wdc*	at isapnp? 

# PCMCIA IDE controllers
wdc*	at pcmcia? function ?

# ISA ST506, ESDI, and IDE controllers
# Use flags 0x01 if you want to try to use 32bits data I/O (the driver will
# fall back to 16bits I/O if 32bits I/O are not functionnal).
# Some controllers pass the initial 32bit test, but will fail later.
wdc0	at isa? port 0x1f0 irq 14 flags 0x00
wdc1	at isa? port 0x170 irq 15 flags 0x00

# IDE drives
# Flags are used only with controllers that support DMA operations
# and mode settings (e.g. some pciide controllers)
# The lowest order four bits (rightmost digit) of the flags define the PIO
# mode to use, the next set of four bits the DMA mode and the third set the
# UltraDMA mode. For each set of four bits, the 3 lower bits define the mode
# to use, and the last bit must be 1 for this setting to be used.
# For DMA and UDMA, 0xf (1111) means 'disable'.
# 0x0fac means 'use PIO mode 4, DMA mode 2, disable UltraDMA'.
# (0xc=1100, 0xa=1010, 0xf=1111)
# 0x0000 means "use whatever the drive claims to support".
wd*	at wdc? channel ? drive ? flags 0x0000
wd*	at pciide? channel ? drive ? flags 0x0000

# ATAPI bus support
atapibus* at wdc? channel ?
atapibus* at pciide? channel ?

# ATAPI devices
# flags have the same meaning as for IDE drives.
cd*	at atapibus? drive ? flags 0x0000	# ATAPI CD-ROM drives
sd*	at atapibus? drive ? flags 0x0000	# ATAPI disk drives
uk*	at atapibus? drive ? flags 0x0000	# ATAPI unknown


# Miscellaneous mass storage devices

# ISA floppy
fdc0	at isa? port 0x3f0 irq 6 drq 2	# standard PC floppy controllers
#fdc1	at isa? port 0x370 irq ? drq ?
fd*	at fdc? drive ?			# the drives themselves
# some machines need you to do this instead of fd*
#fd0	at fdc0 drive 0

# ISA CD-ROM devices
#mcd0	at isa? port 0x300 irq 10	# Mitsumi CD-ROM drives

# ISA tape devices
# note: the wt driver conflicts unpleasantly with SMC boards at the
# same I/O address. The probe reprograms their EEPROMs. Don't
# uncomment it unless you are actually using it.
#wt0	at isa? port 0x308 irq 5 drq 1	# Archive and Wangtek QIC tape drives


# Network Interfaces

# PCI network interfaces
de*	at pci? dev ? function ?	# DEC 21x4x-based Ethernet
en*	at pci? dev ? function ?	# ENI/Adaptec ATM
ep*	at pci? dev ? function ?	# 3Com 3c59x
ex*	at pci? dev ? function ?	# 3Com 90x[B]
epic*	at pci? dev ? function ?	# SMC EPIC/100 Ethernet
esh*	at pci? dev ? function ?	# Essential HIPPI card
fpa*	at pci? dev ? function ?	# DEC DEFPA FDDI
fxp*	at pci? dev ? function ?	# Intel EtherExpress PRO 10+/100B
le*	at pci? dev ? function ?	# PCnet-PCI Ethernet
ne*	at pci? dev ? function ?	# NE2000-compatible Ethernet
tl*	at pci? dev ? function ?	# ThunderLAN-based Ethernet
vr*	at pci? dev ? function ?	# VIA Rhine Fast Ethernet
lmc*	at pci? dev ? function ?	# Lan Media Corp SSI/HSSI/DS3

# EISA network interfaces
ep*	at eisa? slot ?			# 3Com 3c579 Ethernet
fea*	at eisa? slot ?			# DEC DEFEA FDDI

# ISA Plug-and-Play network interfaces
ep*	at isapnp?			# 3Com 3c509 Ethernet
ne*	at isapnp?			# NE2000-compatible Ethernet
tr*	at isapnp?			# IBM/3COM TROPIC Token-Ring

# PCMCIA network interfaces
ep*	at pcmcia? function ?		# 3Com 3c589 and 3c562 Ethernet
mbe*	at pcmcia? function ?		# MB8696x based Ethernet
ne*	at pcmcia? function ?		# NE2000-compatible Ethernet
sm*	at pcmcia? function ?		# Megahertz Ethernet

# ISA network interfaces
ate0	at isa? port 0x2a0 irq ?		# AT1700
cs0	at isa? port 0x300 iomem ? irq ? drq ?	# CS8900 Ethernet
ec0	at isa? port 0x250 iomem 0xd8000 irq 9	# 3Com 3c503 Ethernet
eg0	at isa? port 0x280 irq 9		# 3C505 ethernet cards
el0	at isa? port 0x300 irq 9		# 3C501 ethernet cards
ep0	at isa? port ? irq ?			# 3C509 ethernet cards
ef0	at isa? port 0x360 iomem 0xd0000 irq 7	# 3C507
ai0	at isa? port 0x360 iomem 0xd0000 irq 7	# StarLAN
fmv0	at isa? port 0x2a0 irq ?		# FMV-180 series
ix0	at isa? port 0x300 irq 10		# EtherExpress/16
iy0	at isa? port 0x360 irq ?		# EtherExpress PRO 10 ISA
lc0	at isa? port 0x320 iomem ? irq ?	# DEC EtherWORKS III (LEMAC)
#depca0	at isa? port 0x300 iomem 0xc8000 iosiz 0x8000 irq 5	# DEPCA
#le*	at depca?
nele0	at isa? port 0x320 irq 9 drq 7		# NE2100
le*	at nele?
bicc0	at isa? port 0x320 irq 10 drq 7		# BICC IsoLan
le*	at bicc?
ne0	at isa? port 0x280 irq 9		# NE[12]000 ethernet cards
ne1	at isa? port 0x300 irq 10
sm0	at isa? port 0x300 irq 10		# SMC91C9x Ethernet
tr0	at isa? port 0xa20 iomem 0xd8000 irq ?  # IBM TROPIC based Token-Ring
tr1	at isa? port 0xa24 iomem 0xd0000 irq ?  # IBM TROPIC based Token-Ring
tr*	at isa? port ? irq ?			# 3COM TROPIC based Token-Ring
we0	at isa? port 0x280 iomem 0xd0000 irq 9	# WD/SMC Ethernet
we1	at isa? port 0x300 iomem 0xcc000 irq 10

# MII/PHY support
exphy*	at mii? phy ?			# 3Com internal PHYs
icsphy*	at mii? phy ?			# Integrated Circuit Systems ICS1890
inphy*	at mii? phy ?			# Intel 82555 PHYs
lxtphy*	at mii? phy ?			# Level One LXT-970 PHYs
nsphy*	at mii? phy ?			# NS83840 PHYs
qsphy*	at mii? phy ?			# Quality Semiconductor QS6612 PHYs
sqphy*	at mii? phy ?			# Seeq 80220/80221/80223 PHYs
tlphy*	at mii? phy ?			# ThunderLAN PHYs
ukphy*	at mii? phy ?			# generic unknown PHYs

# USB Controller and Devices

# PCI USB controllers
uhci*	at pci?				# Universal Host Controller (Intel)
ohci*	at pci?				# Open Host Controller

# USB bus support
usb*	at uhci?
usb*	at ohci?

# USB Hubs
uhub*	at usb?
uhub*	at uhub? port ? configuration ? interface ?

# USB Mice
ums*	at uhub? port ? configuration ? interface ?
wsmouse*	at ums?

# USB Keyboards
ukbd*	at uhub? port ? configuration ? interface ?
wskbd*	at ukbd? console ?

# USB Generic HID devices
uhid*	at uhub? port ? configuration ? interface ?

# USB Printer
ulpt*	at uhub? port ? configuration ? interface ?

# USB Generic driver
ugen*	at uhub? port ? configuration ? interface ?

# Audio Devices

# PCI audio devices
eap*	at pci? dev ? function ?	# Ensoniq AudioPCI
sv*	at pci? dev ? function ?	# S3 SonicVibes

# ISA Plug-and-Play audio devices
ess*	at isapnp?			# ESS Tech ES1887, ES1888, ES888 audio
guspnp*	at isapnp?			# Gravis Ultra Sound PnP audio
sb*	at isapnp?			# SoundBlaster-compatible audio
wss*	at isapnp?			# Windows Sound System
ym*	at isapnp?			# Yamaha OPL3-SA3 audio

# ISA audio devices
# the "aria" probe might give false hits
#aria0	at isa? port 0x290 irq 10 		# Aria
gus0	at isa? port 0x220 irq 7 drq 1 drq2 6	# Gravis Ultra Sound
pas0	at isa? port 0x220 irq 7 drq 1		# ProAudio Spectrum
pss0	at isa? port 0x220 irq 7 drq 6  	# Personal Sound System
sp0	at pss0 port 0x530 irq 10 drq 0		# 	sound port driver
sb0	at isa? port 0x220 irq 5 drq 1 drq2 5	# SoundBlaster
wss0	at isa? port 0x530 irq 10 drq 0	drq2 1	# Windows Sound System

# OPL[23] FM syntheziers
#opl0	at isa? port 0x388	# use only if not attached to sound card
opl*	at ess?
opl*	at sb?
opl*	at sv?

# Audio support
#audio*	at aria?
audio*	at eap?
audio*	at ess?
audio*	at gus?
audio*	at guspnp?
audio*	at pas?
audio*	at sb?
audio*	at sp?
audio*	at sv?
audio*	at wss?
audio*	at ym?

# MIDI support
midi*	at pcppi?		# MIDI interface to the PC speaker
midi*	at sb?			# SB MPU401 port
midi*	at opl?			# OPL FM synth

# The spkr driver provides a simple tone interface to the built in speaker.
#spkr0	at pcppi?		# PC speaker


# Mice

# ISA busmice
#lms0	at isa? port 0x23c irq 5	# Logitech bus mouse
#lms1	at isa? port 0x238 irq 5
#mms0	at isa? port 0x23c irq 5	# Microsoft InPort mouse
#mms1	at isa? port 0x238 irq 5
#wsmouse*	at lms?
#wsmouse*	at mms?
# backwards compatible versions
olms0	at isa? port 0x23c irq 5	# Logitech bus mouse
olms1	at isa? port 0x238 irq 5
omms0	at isa? port 0x23c irq 5	# Microsoft InPort mouse
omms1	at isa? port 0x238 irq 5
#opms0	at pc? irq 12		# PS/2 auxiliary port mouse
#opms0	at vt? irq 12		# PS/2 auxiliary port mouse


# Joysticks

# ISA Plug-and-Play joysticks
joy*	at isapnp?			# Game ports (usually on audio cards)

# ISA joysticks. Probe is a little strange; add only if you have one.
#joy0	at isa? port 0x201


# Miscellaneous Devices

# Planetconnect Satellite receiver driver.
#satlink0 at isa? port 0x300 drq 1


# Pull in optional local configuration
include	"arch/i386/conf/GENERIC.local"


# Pseudo-Devices

# disk/mass storage pseudo-devices
pseudo-device	ccd		4	# concatenated/striped disk devices
#pseudo-device	raid		4	# RAIDframe disk driver
pseudo-device	md		1	# memory disk device (ramdisk)
pseudo-device	vnd		4	# disk-like interface to files

# network pseudo-devices
pseudo-device	bpfilter	8	# Berkeley packet filter
#pseudo-device	ipfilter		# IP filter (firewall) and NAT
pseudo-device	loop			# network loopback
#pseudo-device	ppp		2	# Point-to-Point Protocol
#pseudo-device	sl		2	# Serial Line IP
#pseudo-device	strip		2	# Starmode Radio IP (Metricom)
#pseudo-device	tun		2	# network tunneling over tty
#pseudo-device	gre		2	# generic L3 over IP tunnel
#pseudo-device	ipip		2	# IP Encapsulation within IP (RFC 2003)

# miscellaneous pseudo-devices
pseudo-device	pty		64	# pseudo-terminals
#pseudo-device	tb		1	# tablet line discipline
pseudo-device	sequencer	1	# MIDI sequencer
# rnd works; RND_COM does not on port i386 yet.
pseudo-device	rnd			# /dev/random and in-kernel generator
#options 	RND_COM			# use "com" randomness as well (BROKEN)

# a pseudo device needed for Coda	# also needs CODA (above)
#pseudo-device	vcoda		4	# coda minicache <-> venus comm.


	and, dmesg from a successfully booted kernel:

NetBSD 1.4.1 (GENERIC_CGD) #1: Wed Sep  8 15:37:08 PDT 1999
    cgd@bacon:/a/src/src-1-4-branch/sys/arch/i386/compile/GENERIC_CGD
cpu0: family 6 model 5 step 2
cpu0: Intel Pentium II (686-class)
real mem  = 133820416
avail mem = 101003264
using 2822 buffers containing 26705920 bytes of memory
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o enabled, memory enabled
pchb0 at pci0 dev 0 function 0
pchb0: Intel 82443BX Host Bridge/Controller (rev. 0x02)
ppb0 at pci0 dev 1 function 0: Intel 82443BX AGP Interface (rev. 0x02)
pci1 at ppb0 bus 1
pci1: i/o enabled, memory enabled
vga1 at pci1 dev 0 function 0: Texas Instruments product 0x3d07 (rev. 0x11)
wsdisplay0 at vga1: console (80x25, vt100 emulation)
pcib0 at pci0 dev 7 function 0
pcib0: Intel 82371AB PCI-to-ISA Bridge (PIIX4) (rev. 0x02)
pciide0 at pci0 dev 7 function 1: Intel 82371AB IDE controller (PIIX4)
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
pciide0: disabling primary channel (no drives)
pciide0: secondary channel wired to compatibility mode
atapibus0 at pciide0 channel 1
cd0 at atapibus0 drive 0: <CD-532E-A, , 2.0C> type 5 cdrom removable
cd0: 32-bits data port
cd0: drive supports PIO mode 4, DMA mode 2
pciide0: secondary channel interrupting at irq 15
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
uhci0 at pci0 dev 7 function 2: Intel 82371AB USB Host Controller (PIIX4) (rev. 0x01)
uhci0: interrupting at irq 11
uhci0: USB version 1.0
usb0 at uhci0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
Intel 82371AB Power Management Controller (PIIX4) (miscellaneous bridge, revision 0x02) at pci0 dev 7 function 3 not configured
ex0 at pci0 dev 18 function 0: 3Com 3c905C-TX 10/100 Ethernet with mngmt
ex0: interrupting at irq 9
ex0: MAC address 00:50:04:d7:7e:f1
ppb1 at pci0 dev 19 function 0: Digital Equipment DECchip 21152 PCI-PCI Bridge (rev. 0x03)
pci2 at ppb1 bus 2
pci2: i/o enabled, memory enabled
ncr0 at pci2 dev 4 function 0: ncr 53c875 fast20 wide scsi
ncr0: interrupting at irq 9
ncr0: minsync=12, maxsync=137, maxoffs=16, 128 dwords burst, large dma fifo
ncr0: single-ended, open drain IRQ driver, using on-chip SRAM
ncr0: restart (scsi reset).
scsibus0 at ncr0: 16 targets, 8 luns per target
sd0 at scsibus0 targ 0 lun 0: <SEAGATE, ST39140W, 1444> SCSI2 0/direct fixed
sd0(ncr0:0:0): WIDE SCSI (16 bit) enabled
sd0(ncr0:0:0): 40.0 MB/s (50 ns, offset 15)
sd0: 8683MB, 9006 cyl, 8 head, 246 sec, 512 bytes/sect x 17783240 sectors
le0 at pci2 dev 5 function 0: PCnet-PCI Ethernet (rev. 0x25)
		printing rev here is a local mod ^^^^^^^^^^^
le0: address 00:60:b0:fb:7a:69
le0: 8 receive buffers, 2 transmit buffers
le0: interrupting at irq 9
isa0 at pcib0
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 0x378-0x37b irq 7
^^^^^^^^^^^^^^ would hang after lpt0 line with nca1 in config
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
opms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
biomask 8a40 netmask 8a40 ttymask 9ac2
wscons: wskbd0 glued to wsdisplay0 (console)
boot device: sd0
root on sd0a dumps on sd0b
root file system type: ffs

>How-To-Repeat:
	See above.

>Fix:
	remove nca1 from i386 GENERIC kernel config file (and other
	"generic-ish" kernel configs, e.g. the install kernels if they
	have it).
>Audit-Trail:
>Unformatted: