[root@lserv4 ~]# nc -u -l  -p 7272 netbox 7272
.
LinBios 3.50f (C) Copyright NetGem 1996-1999 (Jan 16 2000 15:33:23)
NetBox 3.5 [DRAM: 08M]
VGA: framebuffer at 0x889d000, size 652k
VGA: mode=640x520x16, line_length=1280, tvstd=PAL, tvout=RGB
ESS at 0x220/0x388/0x330
NFTL: DOC found at 0xffff0000
>debug
0x0
>?
?
help,?      [command]
reboot,Q
boot        args...
baud,b      serial_speed
c,cw,cd     [address1] [address2] [length]
debug       [bits]
d,dw,dd     [address] [length]
e,ew,dd     address value [...]
f,fw,fd     address length value
+           value value [...]
m,mw,md     source dest size
tv          [NTSC/PAL]
tftpget     file [address]
loadimage   file
p           address length checksum
g           address
ww          [source]
wf          source dest [blocks]
i           port
o           port val
br          sector [count [dest]]
bd          sector [count]
bw          sector [count [from]]
bp          sector count checksum
bf          sector count val
docdump     [sector [count]]
docformat   [from [count]]
docread     sector [count [dest]]
docwrite    sector [count [from]]
docerase    block [count]
docwritesys [from [count]]
>