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/bin/sh: can't access tty; job control turned off
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1. vi /etc/inittab µÚÒ»ÐÐÌí¼Ó
    console::sysinit:/etc/init.d/rcS
2.Ö´ÐÐÃüÁÕÒ³öÕæÕý´®¿ÚËù¶ÔÓ¦µÄÉ豸ºÅ£¬ÕâÀïΪ204
# cat /proc/devices
Character devices:
  1 mem
  2 pty
  3 ttyp
  4 /dev/vc/0
  4 tty
  4 ttyS
  5 /dev/tty
  5 /dev/console
  5 /dev/ptmx
  6 lp
  7 vcs
10 misc
13 input
14 sound
21 sg
29 fb
90 mtd
99 ppdev
116 alsa
128 ptm
136 pts
180 usb
188 ttyUSB
189 usb_device
204 s3c2410_serial
253 usb_endpoint
254 rtc
3.ɾ³ýÔ­À´µÄ /dev/console
#rm /dev/console
4.´´½¨ÕæÕý´®¿ÚµÄÉ豸½Úµã
#mknod -m 666 /dev/ttySAC0 c 204 64
5.°ÑconsoleÁ´½Óµ½ÕæÕýµÄ´®¿Ú½Úµã ttySAC0
#ln -s /dev/ttySAC0 /dev/console
¸ãµàÖØÆô£¬²âÊÔһϣº
# ping 192.168.0.228
PING 192.168.0.228 (192.168.0.228): 56 data bytes
64 bytes from 192.168.0.228: seq=0 ttl=64 time=11.609 ms
64 bytes from 192.168.0.228: seq=1 ttl=64 time=4.204 ms
64 bytes from 192.168.0.228: seq=2 ttl=64 time=1.853 ms
64 bytes from 192.168.0.228: seq=3 ttl=64 time=1.238 ms
^C
--- 192.168.0.228 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 1.238/4.726/11.609 ms
#
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C51: CALLING ASSEMBLY ROUTINES from C

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