Add NOTES for pc98.

2 files changed, 967 insertions, 0 deletions

diff --git a/sys/pc98/conf/Makefile b/sys/pc98/conf/Makefile
new file mode 100644
index 0000000..72308f9
--- /dev/null
+++ b/sys/pc98/conf/Makefile
@@ -0,0 +1,10 @@
+# $FreeBSD$
+
+all:
+	@echo "make LINT only"
+
+clean:
+	rm -f LINT
+
+LINT: ../../conf/NOTES NOTES ../../conf/makeLINT.sed
+	cat ../../conf/NOTES NOTES | sed -E -n -f ../../conf/makeLINT.sed > LINT
diff --git a/sys/pc98/conf/NOTES b/sys/pc98/conf/NOTES
new file mode 100644
index 0000000..53d2e3d
--- /dev/null
+++ b/sys/pc98/conf/NOTES
@@ -0,0 +1,957 @@
+#
+# NOTES -- Lines that can be cut/pasted into kernel and hints configs.
+#
+# This file contains machine dependent kernel configuration notes.  For
+# machine independent notes, look in /sys/conf/NOTES.
+#
+# $FreeBSD$
+#
+
+#
+# This directive is mandatory; it defines the architecture to be
+# configured for; in this case, the 386 family based PC-98 and
+# compatibles.
+#
+machine		pc98
+options 	PC98
+
+# 
+# We want LINT to cover profiling as well
+profile         2
+
+
+#####################################################################
+# SMP OPTIONS:
+#
+# APIC_IO enables the use of the IO APIC for Symmetric I/O.
+#
+# Notes:
+#
+#  An SMP kernel will ONLY run on an Intel MP spec. qualified motherboard.
+#
+#  Be sure to disable 'cpu I386_CPU' && 'cpu I486_CPU' for SMP kernels.
+#
+#  Check the 'Rogue SMP hardware' section to see if additional options
+#   are required by your hardware.
+#
+
+# Mandatory:
+options 	APIC_IO			# Symmetric (APIC) I/O
+
+#
+# Rogue SMP hardware:
+#
+
+# Bridged PCI cards:
+#
+# The MP tables of most of the current generation MP motherboards
+#  do NOT properly support bridged PCI cards.  To use one of these
+#  cards you should refer to ???
+
+
+#####################################################################
+# CPU OPTIONS
+
+#
+# You must specify at least one CPU (the one you intend to run on);
+# deleting the specification for CPUs you don't need to use may make
+# parts of the system run faster.
+# I386_CPU is mutually exclusive with the other CPU types.
+#
+#cpu		I386_CPU		
+cpu		I486_CPU
+cpu		I586_CPU		# aka Pentium(tm)
+cpu		I686_CPU		# aka Pentium Pro(tm)
+
+#
+# Options for CPU features.
+#
+# CPU_ATHLON_SSE_HACK tries to enable SSE instructions when the BIOS has
+# forgotten to enable them.
+#
+# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
+# BlueLightning CPU.  It works only with Cyrix FPU, and this option
+# should not be used with Intel FPU.
+#
+# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
+# CPU if CPU supports it. The default is double-clock mode on
+# BlueLightning CPU box.
+#
+# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
+#
+# CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
+# mapped mode.  Default is 2-way set associative mode.
+#
+# CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
+# of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
+# Otherwise, the NO_LOCK bit of CCR1 is cleared.  (NOTE 3)
+#
+# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e. enables
+# reorder).  This option should not be used if you use memory mapped
+# I/O device(s).
+#
+# CPU_ENABLE_SSE enables SSE/MMX2 instructions support.  This is default
+# on I686_CPU and above.
+# CPU_DISABLE_SSE explicitly prevent I686_CPU from turning on SSE.
+#
+# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
+#
+# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
+# for i386 machines.
+#
+# CPU_IORT defines I/O clock delay time (NOTE 1).  Default values of
+# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
+# (no clock delay).
+#
+# CPU_L2_LATENCY specifed the L2 cache latency value.  This option is used
+# only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
+# The default value is 5.
+#
+# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
+# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
+# 1).
+#
+# CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs.  This option
+# is useful when you use Socket 8 to Socket 370 converter, because most Pentium
+# Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
+#
+# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
+#
+# CPU_SUSP_HLT enables suspend on HALT.  If this option is set, CPU
+# enters suspend mode following execution of HALT instruction.
+#
+# CPU_UPGRADE_HW_CACHE eliminates unneeded cache flush instruction(s).
+#
+# CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
+# K5/K6/K6-2 cpus.
+#
+# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
+# flush at hold state.
+#
+# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
+# without cache flush at hold state, and (2) write-back CPU cache on
+# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
+#
+# NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
+# Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
+# executed.  This option is only needed if I586_CPU is also defined,
+# and should be included for any non-Pentium CPU that defines it.
+#
+# NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
+# which indicates that the 15-16MB range is *definitely* not being
+# occupied by an ISA memory hole.
+#
+# CPU_DISABLE_CMPXCHG disables the CMPXCHG instruction on > i386 IA32 
+# machines.  VmWare seems to emulate this instruction poorly, causing 
+# the guest OS to run very slowly.  Enabling this with a SMP kernel
+# will cause the kernel to be unusable.
+#
+# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
+# CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
+# These options may crash your system.
+#
+# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
+# in write-through mode when revision < 2.7.  If revision of Cyrix
+# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
+#
+# NOTE 3: This option may cause failures for software that requires
+# locked cycles in order to operate correctly.
+#
+options 	CPU_ATHLON_SSE_HACK
+options 	CPU_BLUELIGHTNING_FPU_OP_CACHE
+options 	CPU_BLUELIGHTNING_3X
+options 	CPU_BTB_EN
+options 	CPU_DIRECT_MAPPED_CACHE
+options 	CPU_DISABLE_5X86_LSSER
+options 	CPU_ENABLE_SSE
+#options 	CPU_DISABLE_SSE
+options 	CPU_FASTER_5X86_FPU
+options 	CPU_I486_ON_386
+options 	CPU_IORT
+options 	CPU_L2_LATENCY=5
+options 	CPU_LOOP_EN
+options 	CPU_PPRO2CELERON
+options 	CPU_RSTK_EN
+options 	CPU_SUSP_HLT
+options 	CPU_UPGRADE_HW_CACHE
+options 	CPU_WT_ALLOC
+options 	CYRIX_CACHE_WORKS
+options 	CYRIX_CACHE_REALLY_WORKS
+#options 	NO_F00F_HACK
+options 	CPU_DISABLE_CMPXCHG
+
+#
+# A math emulator is mandatory if you wish to run on hardware which
+# does not have a floating-point processor.  Pick either the original,
+# bogus (but freely-distributable) math emulator, or a much more
+# fully-featured but GPL-licensed emulator taken from Linux.
+#
+options 	MATH_EMULATE		#Support for x87 emulation
+# Don't enable both of these in a real config.
+options 	GPL_MATH_EMULATE	#Support for x87 emulation via
+
+# Debug options
+options 	NPX_DEBUG	# enable npx debugging (FPU/math emu)
+					#new math emulator
+
+#
+# PERFMON causes the driver for Pentium/Pentium Pro performance counters
+# to be compiled.  See perfmon(4) for more information.
+#
+options 	PERFMON
+
+
+#####################################################################
+# NETWORKING OPTIONS
+
+#
+# DEVICE_POLLING adds support for mixed interrupt-polling handling
+# of network device drivers, which has significant benefits in terms
+# of robustness to overloads and responsivity, as well as permitting
+# accurate scheduling of the CPU time between kernel network processing
+# and other activities. The drawback is a moderate (up to 1/HZ seconds)
+# potential increase in response times.
+# It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
+# to achieve smoother behaviour.
+# Additionally, you can enable/disable polling at runtime with the
+# sysctl variable kern.polling.enable (defaults off), and select
+# the CPU fraction reserved to userland with the sysctl variable
+# kern.polling.user_frac (default 50, range 0..100).
+#
+# Only the "dc" "fxp" and "sis" devices support this mode of operation at
+# the time of this writing.
+
+options 	DEVICE_POLLING
+
+
+#####################################################################
+# CLOCK OPTIONS
+
+# The following options are used for debugging clock behavior only, and
+# should not be used for production systems.
+#
+# CLK_CALIBRATION_LOOP will run the clock calibration loop at startup
+# until the user presses a key.
+
+options 	CLK_CALIBRATION_LOOP
+
+# The following two options measure the frequency of the corresponding
+# clock relative to the RTC (onboard mc146818a).
+
+options 	CLK_USE_I8254_CALIBRATION
+options 	CLK_USE_TSC_CALIBRATION
+
+
+#####################################################################
+# MISCELLANEOUS DEVICES AND OPTIONS
+
+device		speaker		#Play IBM BASIC-style noises out your speaker
+hint.speaker.0.at="isa"
+hint.speaker.0.port="0x35"
+device		gzip		#Exec gzipped a.out's. REQUIRES COMPAT_AOUT!
+device		apm_saver	# Requires APM
+
+
+#####################################################################
+# HARDWARE BUS CONFIGURATION
+
+#
+# ISA bus
+#
+device		isa
+
+#
+# Options for `isa':
+#
+# AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
+# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
+# This option breaks suspend/resume on some portables.
+#
+# AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
+# interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
+# Automatic EOI is documented not to work for for the slave with the
+# original i8259A, but it works for some clones and some integrated
+# versions.
+#
+# MAXMEM specifies the amount of RAM on the machine; if this is not
+# specified, FreeBSD will first read the amount of memory from the CMOS
+# RAM, so the amount of memory will initially be limited to 64MB or 16MB
+# depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
+# then attempt to detect the installed amount of RAM.  If this probe
+# fails to detect >64MB RAM you will have to use the MAXMEM option.
+# The amount is in kilobytes, so for a machine with 128MB of RAM, it would
+# be 131072 (128 * 1024).
+#
+# BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
+# reset the CPU for reboot.  This is needed on some systems with broken
+# keyboard controllers.
+
+options 	COMPAT_OLDISA	#Use ISA shims and glue for old drivers
+options 	AUTO_EOI_1
+#options 	AUTO_EOI_2
+
+options 	MAXMEM=(128*1024)
+#options 	BROKEN_KEYBOARD_RESET
+options 	EPSON_BOUNCEDMA
+options 	EPSON_MEMWIN
+
+#
+# PCI bus & PCI options:
+#
+device		pci
+
+#
+# AGP GART support
+device		agp
+
+
+#####################################################################
+# HARDWARE DEVICE CONFIGURATION
+
+#
+# Mandatory devices:
+#
+
+# PC98 keyboard
+device		pckbd
+hint.pckbd.0.at="isa"
+hint.pckbd.0.port="0x041"
+hint.pckbd.0.irq="1"
+
+# These options are valid for other keyboard drivers as well.
+options 	KBD_DISABLE_KEYMAP_LOAD	# refuse to load a keymap
+options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
+
+# GDC screen
+device		gdc
+hint.gdc.0.at="isa"
+options 	LINE30
+
+#
+# The Numeric Processing eXtension driver.  In addition to this, you
+# may configure a math emulator (see above).  If your machine has a
+# hardware FPU and the kernel configuration includes the npx device
+# *and* a math emulator compiled into the kernel, the hardware FPU
+# will be used, unless it is found to be broken or unless "flags" to
+# npx0 includes "0x08", which requests preference for the emulator.
+device		npx
+
+#
+# `flags' for npx0:
+#	0x01	don't use the npx registers to optimize bcopy.
+#	0x02	don't use the npx registers to optimize bzero.
+#	0x04	don't use the npx registers to optimize copyin or copyout.
+#	0x08	use emulator even if hardware FPU is available.
+# The npx registers are normally used to optimize copying and zeroing when
+# all of the following conditions are satisfied:
+#	I586_CPU is an option
+#	the cpu is an i586 (perhaps not a Pentium)
+#	the probe for npx0 succeeds
+#	INT 16 exception handling works.
+# Then copying and zeroing using the npx registers is normally 30-100% faster.
+# The flags can be used to control cases where it doesn't work or is slower.
+# Setting them at boot time using userconfig works right (the optimizations
+# are not used until later in the bootstrap when npx0 is attached).
+# Flag 0x08 automatically disables the i586 optimized routines.
+#
+
+#
+# Optional devices:
+#
+
+# 3Dfx Voodoo Graphics, Voodoo II /dev/3dfx CDEV support. This will create
+# the /dev/3dfx0 device to work with glide implementations. This should get
+# linked to /dev/3dfx and /dev/voodoo. Note that this is not the same as
+# the tdfx DRI module from XFree86 and is completely unrelated.
+#
+# To enable Linuxulator support, one must also include COMPAT_LINUX in the
+# config as well, or you will not have the dependencies. The other option
+# is to load both as modules.
+
+device 		tdfx			# Enable 3Dfx Voodoo support
+options 	TDFX_LINUX		# Enable Linuxulator support
+
+# DRM options:
+# gammadrm:  3Dlabs Oxygen GMX 2000
+# mgadrm:    AGP Matrox G200, G400, G450, G550
+# tdfxdrm:   3dfx Voodoo 3/4/5 and Banshee
+# r128drm:   AGP ATI Rage 128
+# radeondrm: AGP ATI Radeon, including 7200 and 7500
+# DRM_LINUX: include linux compatibility, requires COMPAT_LINUX
+# DRM_DEBUG: include debugging code, very slow
+#
+# mga, r128, and radeon require AGP in the kernel
+
+device		gammadrm
+device		mgadrm
+device		"r128drm"
+device		radeondrm
+device		tdfxdrm
+
+options 	DRM_DEBUG
+options 	DRM_LINUX
+
+#
+# Bus mouse
+#
+device		mse
+hint.mse.0.at="isa"
+hint.mse.0.port="0x7fd9"
+hint.mse.0.irq="13"
+
+#
+# Network interfaces:
+#
+
+# ar:   Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver
+#       (requires sppp)
+# cx:   Cronyx/Sigma multiport sync/async (with Cisco or PPP framing)
+# ed:   Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
+#       HP PC Lan+, various PC Card devices (refer to etc/defauls/pccard.conf)
+#       (requires miibus)
+# el:   3Com 3C501 (slow!)
+# ie:   AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210;
+#       Intel EtherExpress
+# le:   Digital Equipment EtherWorks 2 and EtherWorks 3 (DEPCA, DE100,
+#       DE101, DE200, DE201, DE202, DE203, DE204, DE205, DE422)
+# lnc:  Lance/PCnet cards (Isolan, Novell NE2100, NE32-VL, AMD Am7990 and
+#       Am79C960)
+# oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133
+#       (no hints needed).
+#       Olicom PCI token-ring adapters OC-3136, OC-3137, OC-3139, OC-3140,
+#       OC-3141, OC-3540, OC-3250
+# rdp:  RealTek RTL 8002-based pocket ethernet adapters
+# sbni:	Granch SBNI12-xx ISA and PCI adapters
+# sr:   RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp)
+# wl:	Lucent Wavelan (ISA card only).
+
+# Order for ISA/EISA devices is important here
+
+device		ar
+hint.ar.0.at="isa"
+hint.ar.0.port="0x300"
+hint.ar.0.irq="10"
+hint.ar.0.maddr="0xd0000"
+device		cx	1
+hint.cx.0.at="isa"
+hint.cx.0.port="0x240"
+hint.cx.0.irq="15"
+hint.cx.0.drq="7"
+device		ed
+#options 	ED_NO_MIIBUS		# Disable ed miibus support
+hint.ed.0.at="isa"
+hint.ed.0.port="0x280"
+hint.ed.0.irq="5"
+hint.ed.0.maddr="0xd8000"
+device		el	1
+hint.el.0.at="isa"
+hint.el.0.port="0x300"
+hint.el.0.irq="9"
+device		ie	2
+hint.ie.0.at="isa"
+hint.ie.0.port="0x300"
+hint.ie.0.irq="5"
+hint.ie.0.maddr="0xd0000"
+hint.ie.1.at="isa"
+hint.ie.1.port="0x360"
+hint.ie.1.irq="7"
+hint.ie.1.maddr="0xd0000"
+device		le	1
+hint.le.0.at="isa"
+hint.le.0.port="0x300"
+hint.le.0.irq="5"
+hint.le.0.maddr="0xd0000"
+device		lnc
+hint.lnc.0.at="isa"
+hint.lnc.0.port="0x280"
+hint.lnc.0.irq="10"
+hint.lnc.0.drq="0"
+device		rdp	1
+hint.rdp.0.at="isa"
+hint.rdp.0.port="0x378"
+hint.rdp.0.irq="7"
+hint.rdp.0.flags="2"
+device		sbni
+hint.sbni.0.at="isa"
+hint.sbni.0.port="0x210"
+hint.sbni.0.irq="0xefdead"
+hint.sbni.0.flags="0"
+device		snc
+hint.snc.0.at="isa"
+hint.snc.0.port="0x888"
+hint.snc.0.irq="6"
+hint.snc.0.maddr="0xc0000"
+device		sr
+hint.sr.0.at="isa"
+hint.sr.0.port="0x300"
+hint.sr.0.irq="5"
+hint.sr.0.maddr="0xd0000"
+device		oltr
+hint.oltr.0.at="isa"
+device		wl
+hint.wl.0.at="isa"
+hint.wl.0.port="0x300"
+options 	WLCACHE		# enables the signal-strength cache
+options 	WLDEBUG		# enables verbose debugging output
+
+#
+# Audio drivers: `pca'
+#
+# pca: PCM audio through your PC speaker
+
+device		pca
+hint.pca.0.at="isa"
+hint.pca.0.port="0x040"
+
+# 
+# SCSI host adapters:
+# 
+# ct: WD33C93[ABC] based SCSI host adapters.
+# ncv: NCR 53C500 based SCSI host adapters.
+# nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
+# stg: TMC 18C30, 18C50 based SCSI host adapters.
+
+device		ct
+hint.ct.0.at="isa"
+device          ncv
+device          nsp
+device          stg
+hint.stg.0.at="isa"
+hint.stg.0.port="0x140"
+hint.stg.0.port="11"
+
+#
+# Miscellaneous hardware:
+#
+# wt: Wangtek and Archive QIC-02/QIC-36 tape drives
+# ctx: Cortex-I frame grabber
+# apm: Laptop Advanced Power Management (experimental)
+# pmtimer: Timer device driver for power management events (APM or ACPI)
+# spigot: The Creative Labs Video Spigot video-acquisition board
+# dgb: Digiboard PC/Xi and PC/Xe series driver (ALPHA QUALITY!)
+# digi: Digiboard driver
+# gp:  National Instruments AT-GPIB and AT-GPIB/TNT board, PCMCIA-GPIB
+# tw: TW-523 power line interface for use with X-10 home control products
+# stl: Stallion EasyIO and EasyConnection 8/32 (cd1400 based)
+# stli: Stallion EasyConnection 8/64, ONboard, Brumby (intelligent)
+
+# Notes on APM
+#  The flags takes the following meaning for apm0:
+#    0x0020  Statclock is broken.
+#  If apm is omitted, some systems require sysctl kern.timecounter.method=1
+#  for correct timekeeping.
+
+# Notes on the spigot:
+#  The video spigot is at 0xad6.  This port address can not be changed.
+#  The irq values may only be 10, 11, or 15
+#  I/O memory is an 8kb region.  Possible values are:
+#    0a0000, 0a2000, ..., 0fffff, f00000, f02000, ..., ffffff
+#    The start address must be on an even boundary.
+#  Add the following option if you want to allow non-root users to be able
+#  to access the spigot.  This option is not secure because it allows users
+#  direct access to the I/O page.
+#  	options SPIGOT_UNSECURE
+
+# Notes on the Specialix SI/XIO driver:
+#  The host card is memory, not IO mapped.
+#  The Rev 1 host cards use a 64K chunk, on a 32K boundary.
+#  The Rev 2 host cards use a 32K chunk, on a 32K boundary.
+#  The cards can use an IRQ of 11, 12 or 15.
+
+# Notes on the Sony Programmable I/O controller
+#  This is a temporary driver that should someday be replaced by something
+#  that hooks into the ACPI layer. The device is hooked to the PIIX4's
+#  General Device 10 decoder, which means you have to fiddle with PCI
+#  registers to map it in, even though it is otherwise treated here as
+#  an ISA device. At the moment, the driver polls, although the device
+#  is capable of generating interrupts. It largely undocumented.
+#  The port location in the hint is where you WANT the device to be
+#  mapped. 0x10a0 seems to be traditional. At the moment the jogdial
+#  is the only thing truly supported, but aparently a fair percentage
+#  of the Vaio extra features are controlled by this device.
+
+# Notes on the Stallion stl and stli drivers:
+#  See src/i386/isa/README.stl for complete instructions.
+#  This is version 0.0.5alpha, unsupported by Stallion.
+#  The stl driver has a secondary IO port hard coded at 0x280.  You need
+#     to change src/i386/isa/stallion.c if you reconfigure this on the boards.
+#  The "flags" and "msize" settings on the stli driver depend on the board:
+#	EasyConnection 8/64 ISA:     flags 23         msize 0x1000
+#	EasyConnection 8/64 EISA:    flags 24         msize 0x10000
+#	EasyConnection 8/64 MCA:     flags 25         msize 0x1000
+#	ONboard ISA:                 flags 4          msize 0x10000
+#	ONboard EISA:                flags 7          msize 0x10000
+#	ONboard MCA:                 flags 3          msize 0x10000
+#	Brumby:                      flags 2          msize 0x4000
+#	Stallion:                    flags 1          msize 0x10000
+
+# Notes on the Digiboard PC/Xi and PC/Xe series driver
+#               
+# The NDGBPORTS option specifies the number of ports controlled by the
+# dgb(4) driver.  The default value is 16 ports per device.
+#
+# The following flag values have special meanings in dgb:
+#	0x01 - alternate layout of pins
+#	0x02 - use the windowed PC/Xe in 64K mode
+
+device		wt	1
+hint.wt.0.at="isa"
+hint.wt.0.port="0x300"
+hint.wt.0.irq="5"
+hint.wt.0.drq="1"
+device		ctx	1
+hint.ctx.0.at="isa"
+hint.ctx.0.port="0x230"
+hint.ctx.0.maddr="0xd0000"
+device		spigot	1
+hint.spigot.0.at="isa"
+hint.spigot.0.port="0xad6"
+hint.spigot.0.irq="15"
+hint.spigot.0.maddr="0xee000"
+device		apm
+hint.apm.0.flags="0x20"
+device		pmc
+device		canbus
+device		canbepm
+hint.pmc.0.at="isa"
+hint.pmc.0.port="0x8f0"
+device		pmtimer			# Adjust system timer at wakeup time
+device		gp
+hint.gp.0.at="isa"
+hint.gp.0.port="0x2c0"
+device		dgb	1   
+options		NDGBPORTS=17
+hint.dgb.0.at="isa"
+hint.dgb.0.port="0x220"
+hint.dgb.0.maddr="0xfc000"
+device		digi
+hint.digi.0.at="isa"
+hint.digi.0.port="0x104"
+hint.digi.0.maddr="0xd0000"
+# BIOS & FEP/OS components of device digi.
+device		digi_CX
+device		digi_CX_PCI
+device		digi_EPCX
+device		digi_EPCX_PCI
+device		digi_Xe
+device		digi_Xem
+device		digi_Xr
+# the port and irq for tw0 are fictitious
+device		tw	1
+hint.tw.0.at="isa"
+hint.tw.0.port="0x380"
+hint.tw.0.irq="11"
+device		stl
+hint.stl.0.at="isa"
+hint.stl.0.port="0x2a0"
+hint.stl.0.irq="10"
+device		stli
+hint.stli.0.at="isa"
+hint.stli.0.port="0x2a0"
+hint.stli.0.maddr="0xcc000"
+hint.stli.0.flags="23"
+hint.stli.0.msize="0x1000"
+device		olpt
+hint.olpt.0.at="isa"
+hint.olpt.0.port="0x040"
+
+#
+# Laptop/Notebook options:
+#
+# See also:
+#  apm under `Miscellaneous hardware'
+# above.
+
+# For older notebooks that signal a powerfail condition (external
+# power supply dropped, or battery state low) by issuing an NMI:
+
+options 	POWERFAIL_NMI	# make it beep instead of panicing
+
+#
+# PC Card/PCMCIA
+# (OLDCARD)
+#
+# card: pccard slots
+# pcic: isa/pccard bridge
+device		pcic
+hint.pcic.0.at="isa"
+#hint.pcic.1.at="isa"
+device		card	1
+
+#
+# PC Card/PCMCIA and Cardbus
+# (NEWCARD)
+#
+# Note that NEWCARD and OLDCARD are incompatible.  Do not use both at the same
+# time.
+#
+# pccbb: pci/cardbus bridge implementing YENTA interface
+# pccard: pccard slots
+# cardbus: cardbus slots
+#device		cbb
+#device		pccard
+#device		cardbus
+#device		pcic		ISA attachment currently busted
+#hint.pcic.0.at="isa"
+#hint.pcic.1.at="isa"
+
+#---------------------------------------------------------------------------
+# ISDN4BSD
+#
+# See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd.
+#
+# i4b passive ISDN cards support contains the following hardware drivers:
+#
+#	isic  - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver
+#	iwic  - Winbond W6692 PCI bus ISDN S/T interface controller
+#	ifpi  - AVM Fritz!Card PCI driver
+#	ifpi2  - AVM Fritz!Card PCI version 2 driver
+#	ihfc  - Cologne Chip HFC ISA/ISA-PnP chipset driver
+#	ifpnp - AVM Fritz!Card PnP driver 
+#	itjc  - Siemens ISAC / TJNet Tiger300/320 chipset
+#
+# i4b active ISDN cards support contains the following hardware drivers:
+#
+#	iavc  - AVM B1 PCI, AVM B1 ISA, AVM T1
+#
+# Note that the ``options'' (if given) and ``device'' lines must BOTH
+# be uncommented to enable support for a given card !
+#
+# In addition to a hardware driver (and probably an option) the mandatory
+# ISDN protocol stack devices and the mandatory support device must be 
+# enabled as well as one or more devices from the optional devices section.
+#
+#---------------------------------------------------------------------------
+#	isic driver (Siemens/Infineon chipsets)
+#
+device	isic
+#
+# PCI bus Cards:
+# --------------
+#
+# Cyclades Cyclom-Y PCI serial driver
+device		cy	1
+options 	CY_PCI_FASTINTR		# Use with cy_pci unless irq is shared
+hint.cy.0.at="isa"
+hint.cy.0.irq="10"
+hint.cy.0.maddr="0xd4000"
+hint.cy.0.msize="0x2000"
+#
+#---------------------------------------------------------------------------
+# ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI)
+options 	ELSA_QS1PCI
+#
+#
+#---------------------------------------------------------------------------
+#	ifpnp driver for AVM Fritz!Card PnP
+#
+# AVM Fritz!Card PnP
+device ifpnp
+#
+#---------------------------------------------------------------------------
+#	ihfc driver for Cologne Chip ISA chipsets (experimental!)
+#
+# Teles 16.3c ISA PnP
+# AcerISDN P10 ISA PnP
+# TELEINT ISDN SPEED No.1
+device ihfc
+#
+#---------------------------------------------------------------------------
+#	ifpi driver for AVM Fritz!Card PCI
+#
+# AVM Fritz!Card PCI
+device  ifpi
+#
+#---------------------------------------------------------------------------
+#	ifpi2 driver for AVM Fritz!Card PCI version 2
+#
+# AVM Fritz!Card PCI version 2
+device  "ifpi2"
+#
+#---------------------------------------------------------------------------
+#	iwic driver for Winbond W6692 chipset
+#
+# ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards)
+device  iwic
+#
+#---------------------------------------------------------------------------
+#	itjc driver for Simens ISAC / TJNet Tiger300/320 chipset
+#
+# Traverse Technologies NETjet-S
+# Teles PCI-TJ
+device  itjc
+#
+#---------------------------------------------------------------------------
+#	iavc driver (AVM active cards, needs i4bcapi driver!)
+#
+device	iavc
+#
+# AVM B1 ISA bus (PnP mode not supported!)
+# ----------------------------------------
+hint.iavc.0.at="isa"
+hint.iavc.0.port="0x150"
+hint.iavc.0.irq="5"
+#
+#---------------------------------------------------------------------------
+#	ISDN Protocol Stack - mandatory for all hardware drivers
+#
+# Q.921 / layer 2 - i4b passive cards D channel handling
+device		"i4bq921"
+#
+# Q.931 / layer 3 - i4b passive cards D channel handling
+device		"i4bq931"
+#
+# layer 4 - i4b common passive and active card handling
+device		"i4b"
+#
+#---------------------------------------------------------------------------
+#	ISDN devices - mandatory for all hardware drivers
+#
+# userland driver to do ISDN tracing (for passive cards only)
+device		"i4btrc"	4
+#
+# userland driver to control the whole thing
+device		"i4bctl"
+#
+#---------------------------------------------------------------------------
+#	ISDN devices - optional
+#
+# userland driver for access to raw B channel
+device		"i4brbch"	4
+#
+# userland driver for telephony
+device		"i4btel"	2
+#
+# network driver for IP over raw HDLC ISDN
+device		"i4bipr"	4
+# enable VJ header compression detection for ipr i/f
+options 	IPR_VJ
+# enable logging of the first n IP packets to isdnd (n=32 here)
+options 	IPR_LOG=32
+#
+# network driver for sync PPP over ISDN; requires an equivalent
+# number of sppp device to be configured
+device		"i4bisppp"	4
+#
+# B-channel interface to the netgraph subsystem
+device		"i4bing"	2
+#
+# CAPI driver needed for active ISDN cards (see iavc driver above)
+device		"i4bcapi"
+#
+#---------------------------------------------------------------------------
+
+#
+# Set the number of PV entries per process.  Increasing this can
+# stop panics related to heavy use of shared memory. However, that can
+# (combined with large amounts of physical memory) cause panics at
+# boot time due the kernel running out of VM space.
+#
+# If you're tweaking this, you might also want to increase the sysctls
+# "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
+#
+# The value below is the one more than the default.
+#
+options 	PMAP_SHPGPERPROC=201
+
+#
+# Change the size of the kernel virtual address space.  Due to
+# constraints in loader(8) on i386, this must be a multiple of 4.
+# 256 = 1 GB of kernel address space.  Increasing this also causes
+# a reduction of the address space in user processes.  512 splits
+# the 4GB cpu address space in half (2GB user, 2GB kernel).
+#
+options 	KVA_PAGES=260
+
+
+#####################################################################
+# ABI Emulation
+
+# Enable iBCS2 runtime support for SCO and ISC binaries
+options 	IBCS2
+
+# Emulate spx device for client side of SVR3 local X interface
+options 	SPX_HACK
+
+# Enable Linux ABI emulation
+options 	COMPAT_LINUX
+
+# Enable i386 a.out binary support
+options 	COMPAT_AOUT
+
+# Enable the linux-like proc filesystem support (requires COMPAT_LINUX
+# and PSEUDOFS)
+options 	LINPROCFS
+
+#
+# SysVR4 ABI emulation
+#
+# The svr4 ABI emulator can be statically compiled into the kernel or loaded as
+# a KLD module.  
+# The STREAMS network emulation code can also be compiled statically or as a 
+# module.  If loaded as a module, it must be loaded before the svr4 module
+# (the /usr/sbin/svr4 script does this for you).  If compiling statically,
+# the `streams' device must be configured into any kernel which also
+# specifies COMPAT_SVR4.  It is possible to have a statically-configured 
+# STREAMS device and a dynamically loadable svr4 emulator;  the /usr/sbin/svr4
+# script understands that it doesn't need to load the `streams' module under
+# those circumstances.
+# Caveat:  At this time, `options KTRACE' is required for the svr4 emulator
+# (whether static or dynamic).  
+# 
+options 	COMPAT_SVR4	# build emulator statically
+options 	DEBUG_SVR4	# enable verbose debugging
+device		streams		# STREAMS network driver (required for svr4).
+
+
+#####################################################################
+# VM OPTIONS
+
+# Disable the 4 MByte page PSE CPU feature.  The PSE feature allows the
+# kernel to use a 4 MByte pages to map the kernel instead of 4k pages.
+# This saves on the amount of memory needed for page tables needed to
+# map the kernel.  You should only disable this feature as a temporary
+# workaround if you are having problems with it enabled.
+#
+#options 	DISABLE_PSE
+
+# Disable the global pages PGE CPU feature.  The PGE feature allows pages
+# to be marked with the PG_G bit.  TLB entries for these pages are not
+# flushed from the cache when %cr3 is reloaded.  This can make context
+# switches less expensive.  You should only disable this feature as a
+# temporary workaround if you are having problems with it enabled.
+#
+#options 	DISABLE_PG_G
+
+# KSTACK_PAGES is the number of memory pages to assign to the kernel
+# stack of each thread.
+
+options 	KSTACK_PAGES=3
+
+#####################################################################
+
+# More undocumented options for linting.
+# Note that documenting these are not considered an affront.
+
+options 	FB_INSTALL_CDEV		# install a CDEV entry in /dev
+
+# PECOFF module (Win32 Execution Format)
+options 	PECOFF_SUPPORT
+options 	PECOFF_DEBUG
+
+options 	ENABLE_ALART
+options 	I4B_SMP_WORKAROUND
+options 	I586_PMC_GUPROF=0x70000
+options 	KBDIO_DEBUG=2
+options 	KBD_MAXRETRY=4
+options 	KBD_MAXWAIT=6
+options 	KBD_RESETDELAY=201
+
+options 	TIMER_FREQ=((14318182+6)/12)
+
+options 	VM_KMEM_SIZE
+options 	VM_KMEM_SIZE_MAX
+options 	VM_KMEM_SIZE_SCALE
+
+# Yet more undocumented options for linting.
+options 	COMPAT_SUNOS