Added kernel config options information, it just a start, but it helps

diff --git a/sys/i386/doc/config_options.doc b/sys/i386/doc/config_options.doc
new file mode 100644 (file)
index 0000000..f14174b
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+++ b/sys/i386/doc/config_options.doc
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+This file desribes what options do in a kernel config file, these options
+change kernl code mostly by #ifdef/#endif pairs in the source.
+
+Note that options which have an underscore ( _ ) in them must be enclosed
+in quotes.  This also applies to options that take a numeric value.
+
+options        CCITT                   X.25 networking support
+options        "COMPAT_43"             Compatible with BSD 4.3
+options        "COM_BIDIR"             Bidirectional support in sys/isa/sio.c
+options        "COM_MULTIPORT"         Multiport support in sys/isa/sio.c
+options        EON
+options        FIFO                    Named pipes (fifos) support
+options        GATEWAY                 Internetwork gateway
+options        INET                    Internet communications protocols
+options        ISO                     ISO networking (TP4?)
+options        ISOFS                   ISO 9660 File System
+options        KTRACE                  Kernel tracing
+options        MATH_EMULATE            Support for x87 emulation
+options        MFS                     Memroy File System
+options        "NCONS=8"               Number of syscons virtual consoles
+options        NFS                     Network File System
+options        NS                      Xerox NS communications protocols
+options        PANICDELAY              Kernel waits 20 secounds after a panic
+options        PANICWAIT               Kernel waits for a key stroke after a panic
+options        PCFS                    PC (MSDOS) File System
+options        QUOTA                   Enable disk quotas
+options        "SHMMAXPGS=64"          256Kb of sharable memory
+options        "SYMTAB_SPACE=89000"    Amount of DDB symbol table space
+options        SYSVSHM                 System V shared memory support
+options        "TCP_COMPAT_42"         Tcp/Ip compatible with 4.2
+options        UCONSOLE                Xconsole support
+options        XSERVER                 Xserver support