09-05-2016
Quote:
Originally Posted by
wisecracker
Note there were only 3 keys pressed and 1 combination of keys...
If i remember correctly the original PC keyboard was built on the Intel MCS-48 microcontroller, namely the 8042, all PC hardware still reflects that. The mcirocontroller sends so-called "make-" and "break-codes" to the main computer, which basically reflect pressing and releasing a key. Scancodes tell which key exactly was pressed (at this level is i.e. possible to separate the left from the right SHIFT key being pressed, etc.)
In the original design (but i have long since stopped to update my PC hardware knowledge) it used not only the BIOS-interrupt 09h, it also controlled the A20 gate, which was done because of a bug in the 80286 design (it couldn't get back from protected to real mode without a reboot).
I hope this helps.
bakunin
10 More Discussions You Might Find Interesting
1. AIX
Hello, I'm new here and I come from Germany.
At our AIX-ORACLE-System someone has deleted one important file and we'd like to find out who did this, next time.
Is there any command to find out who is connected?
I'm not trying to find out if it's root, etc., I'd like to get the DNS-Name or... (3 Replies)
Discussion started by: Huch
3 Replies
2. Programming
Hello !
I've got a question . I really don't het this point. Let's supose that I have a client connected to a server.
I want the server IMEDIATLY know if the client is diconnected . How can I realize this ? :mad:
Amd I'm just curios about one thing. I have a server and multiple clients... (3 Replies)
Discussion started by: !_30
3 Replies
3. IP Networking
hi...
can anyone pls suggest a few methods to check whether a computer is connected to any network, using the terminal, not GUI.
thanks
eskay (1 Reply)
Discussion started by: eskay_karthik
1 Replies
4. UNIX for Advanced & Expert Users
we have a as400 5rev4 and want to use a rhel server to use as a file server. We exported a drive on the rhel box and then mounted it on the as400. We can see the top directory in our mounted as400 directory but when we attempt access subdirectories we get a no matching object error.
When we open... (2 Replies)
Discussion started by: javagair
2 Replies
5. AIX
Hello everyone.
We have a environment where we have DS8K storage and ES800 storage, the way to check to which storage the box is connected is using the LUN ID I get frm " pcmpath query device " command.
for ex:
75CXX - DS8K storage
26860 - ES 800 Storage
I was told to check... (4 Replies)
Discussion started by: nivaspIND
4 Replies
6. IP Networking
Be Gentle folks, I am a baby OpenSuSe 11.2 user :-)
In windows Vista, there is a world in the systray when you are Internet connected and not just local.
I have searched all over for a .RPM for the Network Manager or another packeg in Suse that can show me the same thing or something close.
... (0 Replies)
Discussion started by: donmaxwelliii
0 Replies
7. UNIX for Dummies Questions & Answers
Hi all
I've been a Debian user since solidly since about 1997 so I'm fairly experienced Linux user as a whole but unfortunately the monoculture has hit be hard recently. I'm working off a Laptop a lot of the time which spends up to 2-4 weeks without an Internet connection. A few weeks ago it... (1 Reply)
Discussion started by: pointyhat
1 Replies
8. UNIX for Dummies Questions & Answers
hi,
good morning.
Anyone can help me out. A trying to ftp from server A to server B.
from server A to B its working fine but from server B to A, its only showing connected only:
finap7 #ftp 10.10.10.210
Connected to 10.10.10.210.
I refresh the inetd but nothing is happening.
Please... (1 Reply)
Discussion started by: kamaldev
1 Replies
9. OS X (Apple)
Been a while since I've been here; I have my iMac and MBpro connected via firewire, and they can see each other when I open the finder windows.
But I'd like to be able to 'see' each computer on the other via the terminal application; and I can't see them right now. I can transfer files via the... (0 Replies)
Discussion started by: Straitsfan
0 Replies
10. IP Networking
May someone can answer this. Anytime I ignite my laptop to go online I see via etherape that I am connected to IANA as shown below. Is my provider redirecting me there, the cable under the sea, what is the reason for this?
This happened with a pretty normal desktop PC, as well with my ancient... (2 Replies)
Discussion started by: 1in10
2 Replies
LEARN ABOUT DEBIAN
setupcon
SETUPCON(1) Console-setup User's Manual SETUPCON(1)
NAME
setupcon - sets up the font and the keyboard on the console
SYNOPSIS
setupcon [OPTION]... [VARIANT]
DESCRIPTION
setupcon is a program for fast and easy setup of the font and the keyboard on the console. Most of the time you invoke setupcon without
arguments. The keyboard configuration is specified in ~/.keyboard or /etc/default/keyboard. The font configuration is specified in
~/.console-setup or /etc/default/console-setup. Consult keyboard(5) and console-setup(5) for instructions how to configure these two
files.
If you have to switch often between different encodings, keyboards or languages, you can prepare several alternative configuration files
for setupcon. Suppose that most of the time you will use Greek language with Greek keyboard layout, but sometimes you need to type in Ger-
man with German keyboard layout. In this situation you should customize the main configuration files (keyboard and console-setup) for
Greek. Create also alternative configuration files for German named keyboard.german and console-setup.german. Then in order to configure
the console for Greek you will simply run the command with no arguments: setupcon and in order to configure the console for German you will
use setupcon german.
OPTIONS
-v, --verbose
Be more verbose. Use this option if something goes wrong or while experimenting with the configuration files.
-k, --keyboard-only
Setup the keyboard only, do not setup the font.
-f, --font-only
Setup the font only, do not setup the keyboard.
--force
Do not check whether we are on the console. Notice that you can be forced to hard-reboot your computer if you run setupcon with
this option and the screen is controlled by a X server.
--save This option can be useful if you want to use setupcon early in the boot process while /usr is not yet mounted and the required data
are not available. This option will make setupcon copy the required files in /etc/console-setup/ in order to make them available
before /usr is mounted. If you use setupcon early in the boot process, then you should run it with this option after every change
of the console configuration.
--save-only
The same as --save, but does not setup the keyboard and the font. This option can be useful if you want to save the required files
while the screen is controlled by a X server.
-h, --help
Display usage information.
VARIANT
Specifies which configuration file to use. By default the configuration files of setupcon are named console-setup and keyboard but
if you use e.g. chukchi as VARIANT then the configuration files will be console-setup.chukchi and keyboard.chukchi. In this way
you can have easy access to several different configurations - for example one for the Chukchi language and another for the default
configuration.
FILES
~/.console-setup
~/.keyboard
/etc/default/console-setup
/etc/default/keyboard
/etc/default/console-setup.VARIANT
/etc/default/keyboard.VARIANT
/etc/console-setup/
SEE ALSO
keyboard(5), console-setup(5)
console-setup 2011-03-17 SETUPCON(1)