MASTER(F) XENIX System V MASTER(F)
Name
master - Master device information table.
Description
master contains device information used by config(C) to
generate the configuration files. The file consists of 4
parts, each separated by a line with a dollar sign ($) in
column 1.
- Part 1 contains device information.
- Part 2 contains the line discipline table.
- Part 3 contains names of devices that have aliases.
- Part 4 contains tunable parameter information.
Any line with an asterisk (*) in column 1 is treated as a
comment.
Part 1
This part contains definitions for the system devices. Each
line has 14 fields with the fields delimited by tabs and/or
blanks:
Field 1: Device name (8 chars. maximum).
Field 2: Number of interrupt vectors.
Field 3: Device mask (octal). Each ``on'' bit
indicates that the driver has the
corresponding handler or structure:
000400 tty structure.
000200 Not used.
000100 Initialization handler.
000040 Clock time poll routine.
000020 Open handler.
000010 Close handler.
000004 Read handler.
000002 Write handler.
000001 Ioctl handler.
The clock time poll routine, if present in the driver,
is called every clock tick in which the clock
interrupted task-time processing.
Field 4: Device type indicator (octal):
000200 Not used
000100 No qswtch on interrupt.
000040 Not used.
000020 Required device.
000010 Block device.
000004 Character device.
000002 Not used.
000001 Not used.
Field 5: Handler prefix (4 chars. maximum).
Usually same as Field 1. The routines of
dev.c should begin dev... The tty
structure of dev.c should be named
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MASTER(F) XENIX System V MASTER(F)
dev_tty.
Field 6: Not used.
Field 7: Major device number for block-type
device.
Field 8: Major device number for character-type
device.
Field 9: Maximum number of devices per
controller.
Field 10: The spl level (1 - 7) at which the
device's interrupt routine should be
called.
Fields 11-14: Maximum of four interrupt vector
addresses (octal). Each address is
followed by a unique letter or a blank.
Devices that are not interrupt-driven have an interrupt
vector size of zero. Devices that generate interrupts but
are not of the standard character or block device mold,
should be specified with a type (field 4) which has neither
the block nor character bits set.
Part 2
This part contains definitions for the system line
discipline. Each line has 9 fields. Each field is a
maximum of 8 characters delimited by a blank if less than 8:
Field 1: Device associated with this line.
Field 2: Open routine.
Field 3: Close routine.
Field 4: Read routine.
Field 5: Write routine.
Field 6: Ioctl routine.
Field 7: Receiver interrupt routine.
Field 8: Transmitter interrupt routine.
Field 9: Modem control interrupt routine.
Part 3
This part contains definitions for device aliases. Each
line has 2 fields:
Field 1: Alias name of device (8 chars. maximum).
Field 2: Reference name of device as given in
part 1 (8 chars. maximum).
Aliases may be used in place of actual device names when
creating the config(C) description file.
Part 4
This part contains the names and default values for tunable
parameters. Each line has 2 or 3 fields:
Field 1: Parameter name to be used in the
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MASTER(F) XENIX System V MASTER(F)config(C) description file (20 chars.
maximum).
Field 2: Parameter name as it will appear in the
resulting c.c file (20 chars. maximum).
Field 3: Default parameter value (20 chars.
maximum).
If a parameter has no default value, an explicit
specification for the parameter must be given in the
description file. See config(C) for a list of the tunable
parameters.
See Also
config(C), configure(C)
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