06-14-2013
So what is the question? FreeBSD knows what i needs to know about peripherals and no more. When it finds a serial port, it creates a support program for it. Different rs232 ports can have different sets of leads implemented. CD may be one that the driver trusts more than say DTR or CTS.
8 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I'm getting a error
le0: No Carrier - transceiver cable problem?
Tried looking around to see what is the best way to fix this error. Can anyone help me I can't find anything. (2 Replies)
Discussion started by: merlin
2 Replies
2. UNIX for Dummies Questions & Answers
IS there virus software for unix? I worked in a Solaris environment and dont remember having anything. I also ask because the current enviroment i am working on is Microsoft and they argue that they do not use unix because of virus detection. Any input would be greatly appreciated. (1 Reply)
Discussion started by: pbonilla
1 Replies
3. IP Networking
How to get information that where is my modem configured in /dev.
I have two modems configured in my device .. one is USB and other is PCI modem.. USB is detected as /dev/USB0. but how to see about PCI modem? (0 Replies)
Discussion started by: s123.radha
0 Replies
4. Programming
Hello there,
My mulithreaded application (which is too large to represent the source code here) is crashing after installing FreeBSD 7.1-RELEASE/amd64.
It worked properly on others machines (Dual Cores with 4GB of RAM - FreeBSD 6.2-RELEASE/i386).
The current machine has 2x Core 2 Duo... (1 Reply)
Discussion started by: Seenquev
1 Replies
5. Shell Programming and Scripting
hellou, can anybody help me with nat detection in real time ? i prefer some detection script because i try some nat detection program's for example p0f or i'm using tcpdump, but i would get contain of specific packet. Some ideas? (1 Reply)
Discussion started by: TheTechnic
1 Replies
6. Programming
Hey, for the purpose of a research project I need to know if a specific type of parallel processing is being utilized by any user-run programs. Is there a way to detect whether a program either returns a value to another program at the end of execution, or just utilizes any form of parallel... (4 Replies)
Discussion started by: azar.zorn
4 Replies
7. UNIX for Dummies Questions & Answers
hi,
i am going to know if i can use n.s for power line simulating?
Best Regards, (2 Replies)
Discussion started by: mohsenmahoor
2 Replies
8. Solaris
I am having troubles with carrier detection for dialing in via a modem or direct connection via a null modem connection under Solaris 8 (i.e. login session remains active after the modem disconnects). I tried two different dumb modems (which do not respond to AT commands) on the machine that I am... (6 Replies)
Discussion started by: rstor
6 Replies
dc(4) Kernel Interfaces Manual dc(4)
Name
dc - serial line/mouse/keyboard
Syntax
device dc0 at ibus? vector dcintr
Description
The serial line controller provides four ports, with modem control on two of the ports. The DECstation 3100 and DECstation 2100 only pro-
vide partial modem control. The DECstation 5000 provides full modem control. The ports are used as follows:
Port Usage
0 Graphics device keyboard at 4800 BPS
1 Mouse or tablet at 4800 BPS
2 Communications port 1 (w/modem control)/local terminal
3 Communications port 2 (w/modem control)/local terminal
Each communication port from the serial line controller behaves as described in and can be set to run at any of 16 speeds. For the encod-
ing, see
When a graphics device is not being used as the system console, communications port 2 becomes the system console. In this configuration,
the port can only be used at 9600 BPS and no modem control is supported.
The serial line driver operates in interrupt-per-character mode (all pending characters are flushed from the silo on each interrupt).
Restrictions
Speed must be set to 9600 BPS on the console port and 4800 BPS on ports used by graphics devices. The serial line driver enforces this
restriction; that is, changing speeds with the command may not always work on these ports.
Files
console terminal
local terminal
local terminal
See Also
console(4), devio(4), tty(4), ttys(5), MAKEDEV(8)
RISC dc(4)