教你制作软盘上运行的FreeBSD系统 （2）

options MFS              # 内存文件系统支持
options MD_ROOT      # 使用MD(内存磁盘)设备做root
options UFS              # UFS文件系统支持 
options UFS_ROOT    # UFS ROOT
pseudo-device md    # MD设备支持

#
# GENERIC -- Generic kernel configuration file for FreeBSD/i386
#
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.246.2.38 2002/01/25 17:41:40 murray Exp $
machine                  i386
cpu                         I386_CPU
cpu                         I486_CPU
cpu                         I586_CPU
cpu                         I686_CPU
ident                        "MINI-KERNEL"
maxusers                0                               
#maxusers最好让系统自动分配，如果设得过大，会占用过多的内存。 
options                   INET                 #InterNETworking
options                   FFS                   #Berkeley Fast Filesystem
options                   FFS_ROOT             #FFS usable as root device [keep this!]
options                   MFS                   #Memory Filesystem
options                   MD_ROOT               #MD is a potential root device
options                   COMPAT_43            #Compatible with BSD 4.3 [KEEP THIS!]
options                   NO_SWAPPING      #Disable swap

device                   isa
device                   pci

# Floppy drives
device                   fdc0 at     isa?    port IO_FD1    irq 6   drq 2
device                   fd0   at     fdc0   drive 0

# atkbdc0 controls both the keyboard and the PS/2 mouse
device                   atkbdc0   at    isa?   port   IO_KBD
device                   atkbd0     at   atkbdc?   irq 1   flags 0x1

device                   vga0        at    isa?

# syscons is the default console driver, resembling an SCO console
device                    sc0         at    isa?   flags 0x100

# Floating point support - do not disable.
device                   npx0        at    nexus?   port IO_NPX   irq 13

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device                    miibus       # MII bus support
device                    fxp            # Intel EtherExpress PRO/100B (82557, 82558)
device                    rl               # RealTek 8129/8139
device                    xl              # 3Com 3c90x
device                    lnc0      
 at     isa?   port 0x280   irq 10   drq 0            # VMware Nic

# Pseudo devices - the number indicates how many units to allocate.
pseudo-device                    loop            # Network loopback
pseudo-device                    ether          # Ethernet support
pseudo-device                    md             # Memory "disks"

CPU: Pentium III 733Mhz
MotherBoard: Via 693A Chipset
NIC: Realtek 8139c

bsd# cd /sys/i386/conf
bsd# config MINI
bsd# cd ../../compile/MINI
bsd# make depend && make kernel