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Full Discussion: Difference between tty and console devices ?
Operating Systems AIX Difference between tty and console devices ? Post 302263380 by projects on Monday 1st of December 2008 12:36:01 PM
Old 12-01-2008
Quote:
Originally Posted by vilius
Hi,

What is the diference between these two ?

thanks
Vilius
tty usually means a serial port device file in AIX, like Zaxxon said, you normally can found something like /dev/tty0 or /dev/tty1. A tty device can be config as a rs-232 port, rs-485 port, or asyn device. It's also can be define as a console port.

console is concept of control terminal. could be a physical device or just a logical term. Physically, in most UNIX, you can define a console via a serial port like one of tty and connect a software or hardware terminal to control a station, or use your video card, in Power System you can use a HMC. Also you can define a logical console in software to redirect your in put output information.
 

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LEARN ABOUT ULTRIX

mdc

mdc(4)							     Kernel Interfaces Manual							    mdc(4)

Name
       mdc - DS5100 serial line driver

Syntax
       device	 mdc0	  at ibus?     vector mdcintr
       device	 mdc1	  at ibus?     vector mdcintr
       device	 mdc2	  at ibus?     vector mdcintr

Description
       A  DS5100 base system (mdc0) provides four asynchronous ports.  An optional asynchronous card (mdc1 and mdc2 ) can be added to supply eight
       additional ports.

       The mdc ports are used as follows:

       Port    Usage			  Connector

       0       Console port		  6-pin MMJ on CPU board
       1       Local terminal		  6-pin MMJ on CPU board
       2       Full modem control port	  25-pin D-Sub on CPU board
       3       Local terminal		  6-pin MMJ on CPU board

       An optional asynchronous board provides an additional eight lines:

       4       Local terminal		  6-pin MMJ
       5       Local terminal		  6-pin MMJ
       6       Full modem control port	  25-pin D-Sub
       7       Local terminal		  6-pin MMJ
       8       Local terminal		  6-pin MMJ
       9       Local terminal		  6-pin MMJ
       10      Local terminal		  6-pin MMJ
       11      Local terminal		  6-pin MMJ

       The console baud rate is set to 9600 baud by default.  You can change this by setting the baud environment variable  from  console  prompt.
       Each  communication  port  from	the  serial  line controller behaves as described in the reference page and can be set to run at any of 16
       speeds.	For the encoding, see

       You can establish the state of port 2 (port 6) by specifying either modem or nomodem as part of the file entry.

Restrictions
       The speed default is to 9600 baud on the console port.  The console device must be set for 8-bit character length with one stop bit and	no
       parity. The driver enforces these restrictions; that is, changing speeds with the command may not always work on console ports.

Files
       Console terminal

       Full modem control or local terminal

See Also
       console(4), devio(4), tty(4), ttys(5), MAKEDEV(8)

								       RISC								    mdc(4)
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