45        is unchanged.
  46 
  47 
  48        The keyboard abort sequence effect can only be changed by a super-user
  49        using the -a option. This sequence is typically Stop-A or L1-A and
  50        Shift-Pause on the keyboard on SPARC systems, F1-A and Shift-Pause on
  51        x86 systems, and BREAK on the serial console input device on most
  52        systems.
  53 
  54 
  55        A BREAK condition that originates from an erroneous electrical signal
  56        cannot be distinguished from one deliberately sent by remote DCE. As a
  57        remedy, use the -a option with Alternate Break to switch break
  58        interpretation. Due to the risk of incorrect sequence interpretation,
  59        binary protocols such as SLIP and others should not be run over the
  60        serial console port when Alternate Break sequence is in effect.
  61 
  62 
  63        Although PPP is a binary protocol, it has the ability to avoid using
  64        characters that interfere with serial operation. The default alternate
  65        break sequence is CTRL-m ~ CTRL-b, or 0D 7E 02 in hexidecimal. In PPP,
  66        this can be avoided by setting either 0x00000004 or 0x00002000 in the
  67        ACCM.  This forces an escape for the CTRL-b or CTRL-m characters,
  68        respectively.
  69 
  70 
  71        To do this in Solaris PPP 4.0, add:
  72 
  73          asyncmap 0x00002000
  74 
  75 
  76 
  77 
  78        to the /etc/ppp/options file or any of the other configuration files
  79        used for the connection. See pppd(1M).
  80 
  81 
  82        SLIP has no comparable capability, and must not be used if the
  83        Alternate Break sequence is in use.
  84 
  85 

  45        is unchanged.
  46 
  47 
  48        The keyboard abort sequence effect can only be changed by a super-user
  49        using the -a option. This sequence is typically Stop-A or L1-A and
  50        Shift-Pause on the keyboard on SPARC systems, F1-A and Shift-Pause on
  51        x86 systems, and BREAK on the serial console input device on most
  52        systems.
  53 
  54 
  55        A BREAK condition that originates from an erroneous electrical signal
  56        cannot be distinguished from one deliberately sent by remote DCE. As a
  57        remedy, use the -a option with Alternate Break to switch break
  58        interpretation. Due to the risk of incorrect sequence interpretation,
  59        binary protocols such as SLIP and others should not be run over the
  60        serial console port when Alternate Break sequence is in effect.
  61 
  62 
  63        Although PPP is a binary protocol, it has the ability to avoid using
  64        characters that interfere with serial operation. The default alternate
  65        break sequence is CTRL-m ~ CTRL-b, or 0D 7E 02 in hexadecimal. In PPP,
  66        this can be avoided by setting either 0x00000004 or 0x00002000 in the
  67        ACCM.  This forces an escape for the CTRL-b or CTRL-m characters,
  68        respectively.
  69 
  70 
  71        To do this in Solaris PPP 4.0, add:
  72 
  73          asyncmap 0x00002000
  74 
  75 
  76 
  77 
  78        to the /etc/ppp/options file or any of the other configuration files
  79        used for the connection. See pppd(1M).
  80 
  81 
  82        SLIP has no comparable capability, and must not be used if the
  83        Alternate Break sequence is in use.
  84 
  85