osf1 man page for sys_attrs_ace

sys_attrs_ace(5)						File Formats Manual						  sys_attrs_ace(5)

NAME
       sys_attrs_ace - ace subsystem attributes

DESCRIPTION
       This  reference	page  lists and describes attributes for the serial driver (ace) kernel subsystem, used only on the DEC 2000, AlphaServer,
       and AlphaStation family of processors. Refer to the sys_attrs(5) reference page for an  introduction  to  the  topic  of  kernel  subsystem
       attributes.

	      Number of communication ports configured for the system. The ace_cnt value is query only and cannot be changed directly by users.

	      Default value: 0

	      Minimum value: 0

	      Maximum value: 8

	      A value that turns ace debugging mode on (1) or off (0).

	      Default value: 0 (off)

	      Do not modify the default value of this attribute unless instructed to do so by support personnel.

	      The  major  number assigned to device special files /dev/tty0n (where n equals 0 to 8). The ace_major value is query only and cannot
	      be changed directly by users.

	      Default value: 35

	      Minimum value: 0

	      Maximum value: 512

	      The number of seconds that Data Carrier Detect must be done before declaring that a disconnect has occurred. Valid values are 0,	1,
	      and 2.

	      Default value: 2 (seconds)

SEE ALSO
       sys_attrs(5)

																  sys_attrs_ace(5)