mdc(4) [ultrix man page]

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)

Check Out this Related Man Page

LPBB(4) 						   BSD Kernel Interfaces Manual 						   LPBB(4)

NAME

     lpbb -- parallel port I2C bit-banging interface

SYNOPSIS

     device iicbus
     device iicbb

     device lpbb
     device iic

DESCRIPTION

     The lpbb driver supports the Philips official I2C parallel bit-banging interface.

					      LS05 pin 14 (Vcc) o      -------
								|      |     |
		 +--+--+---------------------+--+--+------------+------+-o 1 |
		 |  |  |		     |	|  |	       ===.1uF | +5V |
       -------- [R][R][R] 3x10K       3x10K [R][R][R]	LS05	|      |     |
       |      |  |  |  |		     |	|  |	pin 7 o-+------+-o 2 |
       | 12 o-+--+  |  |   3| 4	     |	|  |	(Gnd)	       | GND |
       | 17 o-+-----|--|----| >o-------------+--|--|--------------+    |     |
       |      |     |  |    |/	      8 /|9	|  |	 10 /|11  +----+-o 3 |
       | 15 o-+-----+--|--------------o< |------+--|------o< |----+    | SCL |
       |      |        |   1| 2	|	   |	    |	       |     |
       |  9 o-+--------|----| >o-------------------+--------------+----+-o 4 |
       |      |        |    |/				  6 /|5   |    | SDA |
       | 11 o-+--------+----------------------------------o< |----+    -------
       | 10 o-+-+					    |		4-pin
       | 13 o-+-+--oGND 					     Connector
       | 25 o-+-+      ------------------ Part List --------------------------
       --------        | 1 - .1 uF capacitor   | 6 - 10K 5% resistors	     |
       25-pin male D   | 1 - 4-pin connector   | 1 - 25-pin male D connector |
       connector to PC | 1 - 74LS05 open collector hex inverter 	     |
       printer port    -------------------------------------------------------

SEE ALSO

     iicbb(4), iicbus(4), ppbus(4)

HISTORY

     The lpbb manual page first appeared in FreeBSD 3.0.

AUTHORS

     This manual page was written by Nicolas Souchu.

BSD
								 October 25, 1998							       BSD

Linux and UNIX Man Pages

mdc(4) [ultrix man page]

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