SCC(3) Library Functions Manual SCC(3)NAME
scc, duart, uart - serial communication control
SYNOPSIS
bind -a #t /dev
/dev/eia0
/dev/eia0ctl
/dev/eia1
/dev/eia1ctl
DESCRIPTION
The serial line devices serve a one-level directory, giving access to the serial ports. There are several devices serving the same files;
the particular one used depends on the machine involved. Eia0 is a stream data file. It can be read and written to use that port. Reads
will block until at least one character is available. Eia0ctl is a stream control file associated with the port. Eia1 and eia1ctl are
similar, but for a second serial line.
The ctl file can be used to push stream modules onto the port. One can also write one of the following textual commands to a ctl file:
bn Set the baud rate to n.
dn Set DTR if n is non-zero; else clear it.
kn Send a break lasting n milliseconds.
rn Set RTS if n is non-zero; else clear it.
mn Obey modem CTS signal if n is non-zero; else clear it.
pc Set parity to odd if c is o, to even if c is e; else set no parity.
sn Set number of stop bits to n. Legal values are 1 or 2.
ln Set number of bits per byte to n. Legal values are 5, 6, 7, or 8.
SOURCE
/sys/src/9/port/devscc.c
/sys/src/9/*/devduart.c
/sys/src/9/*/devuart.c
SCC(3)
Check Out this Related Man Page
SCC(4) BSD Kernel Interfaces Manual SCC(4)NAME
scc -- Zilog 8530 Serial Communications Controller interface
SYNOPSIS
scc* at ioasic? offset ?
DESCRIPTION
The scc driver provides support for the Zilog 8530 Serial Communications Controller (SCC) via the IOASIC found on DECstation 5000 models in
the /100, /20, and /240 series (supported by NetBSD/pmax).
Each SCC device has two serial ports. The DECstation 5000 model 20 provides one SCC device. Other models provide two, but one port of each
device is dedicated to mouse and keyboard input, respectively.
Input and output for each line may set to one of following baud rates: 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600,
19200, 38400, or 57600.
Speeds up to 230400 are supported by the chip and the motherboard, but speeds higher than 57600 do not work reliably without an external
clock signal.
FILES
/dev/ttya
/dev/ttyb
/dev/ttyc
/dev/ttyd
The mapping from units to serial-hardware outlets is idiosyncratic. The even ports are wired serial connectors and the odd-numbered ports
are reserved for mouse and keyboard.
On machines with one port like Personal DECstations, the single device is ttya.
On the 5000/1xx and 5000/2xx, the first serial port (default serial console) is ttyc and the second port is ttya.
SEE ALSO intro(4), ioasic(4), ttys(5), MAKEDEV(8)HISTORY
The scc driver first appeared in 4.4BSD.
The scc driver was also used for the IOASIC SCC found in DEC Alpha model 3000 TurboCHANNEL based systems; NetBSD/alpha has since been con-
verted to use the machine-independent zstty(4).
BUGS
The IOASIC provides internal DMA channels that can be programmed to transfer up to 4096 bytes of data into, or out, of an SCC without further
software intervention. This feature of the IOASIC is not yet supported.
The mapping from device-special files (major and minor number) to chip and port is arguably backwards. ULTRIX tries to hide the hardware
mapping, but NetBSD does not. Users wanting to use ULTRIX compatible tty names /dev/tty0 and /dev/tty1 for the scc comm-port lines should
make links or device-special files which match their hardware setup.
BSD April 24, 2003 BSD
I am having some problem while creating a new sccs file. During initial creation of the file the SCCS is not storing the file in actual format with the result that the SCCS file is different from my original file.
Any way to avoid this??
Nitin (1 Reply)
Hello,
I'm wondering if anyone out there have experience using the SCCS source code in Unix? If so, can you recommend a good (user friendly) SCCS book for beginner users.
Thanks! (3 Replies)
Hi ,
I am currently using Source Code Control System (SCCS) to keep track of my documents.
There are several User that update the document.
As we all know that after editing it prompts for the comment.
But even if somebody just hits return it accepts it.
I would like that after the... (1 Reply)
Hi All,
I am just wondering if you could help me with this.
Suppose I have a file in SCCS a particular user updates the files aand puts back in sccs . when doing so it proments the user to enter the comment.
Basically what I'd expect is the user to enter the changes he or she has made ....... (3 Replies)
I am not really sure whether i am posting this question in the right forum.....Can someone tell me why I should go for a rational Clearcase version controller when I can use the version controllers 'rcs' or 'sccs' available in UNIX. I want to know the advantage of Rational over these two. Also, I... (2 Replies)
I am trying to use SCCS for project development . Can any one list out the basic setup nneded to be done for SCCS .
I mean if I create a SCCS directory what all files to create on this .
i don't have a root password of the system and I am not going to get one .
I saw few post on this forum... (1 Reply)
I have created a SCCS directory with version 1.1. It has say A.txt (for simplicity)
Now updated files are present in other directory. If I copy A.txt it wont be effected in SCCS. How do I make this A.text to be version 1.2??
Please help! (3 Replies)
Dear all,
I need to write a small automated script:
firstly that should run the command sccli
when that is run the command prompt changes to
sccli>
Now we have to issue the following commands to it
sccli>show disks
sccli>show ld
sccli> exit
after that the script shoud end.
... (2 Replies)
if i am finding out that a process has a more cpu usage before killing the process what are the commands to find out the files which are used by the process.
can anyone help this
thanks (1 Reply)
Does anybody know how to keep SCCS from changing the wrong module keywords? I'm thinking of a don't translate after this line kind of operation.
I see where you can use get with a -k but then no keywords get translated. It's either all or none.
I use simply
# %A%
# %G% %T%
in all my... (1 Reply)
Hi all,
I want to put a local disk on a Sun Cluster node but scconf command explodes :eek:
My system:
* two node cluster on two VMWare virtual machines
* Solaris 10 SunOS 5.10 Generic_141415-05 i86pc i386 i86pc
* Sun Cluster 3.2 u2
* Veritas Volume manager
The situation... (2 Replies)
I need help. I need to read all current and incoming text file in the directory and change it's content to 0.
The following code change the content of the text file to 0, however, the code always assumes that the files are ALREADY present. Is there any way where I can change the file1_.txt,... (3 Replies)
Dear all
I wrote a shell script which runs perfect in OEL linux 5.2 but its failing in AIX 5.3
this scripts check if db is up then it wont proceed else proceed with rest steps.
any help is appreciated.
--------------------------------------------
ORACLE_BASE=/u01/app/oracle... (2 Replies)