Saturday, November 26, 2011
Tuesday, November 22, 2011
How to accomplish the archetypal "Hello world!" affairs in old academy assembly.
Method 2: www.youtube.com In this tutorial; I quickly go through the process of creating the classic "Hello world!" program in assembly using MS debug. On the side; I briefly explain each process. If you feel it goes too fast for you; simply pause it (yes, I know the music rocks). If you need more explanation of what a certain thing is; you can check it out the article on assembly on Wikipedia. Be sure to look at the resources at the bottom of the page as they are more useful. You may even want to see the FASM Programmer's manual @ flatassembler.net Of course, you can always Google "assembly tutorial" and find out what registers and interrupts are. I know, these tutorials are hardly decent. If anyone out there knows assembly well; make a good tutorial either in video or article form. For those of you who want my custom command prompt; copy this into notepad: @echo off break off Title Tony's Command Prompt color 0a cls echo Type "home" any time to go to the current user profile directory. echo Type "desktop" any time to go to the current user desktop. echo. echo Type help to see list of common commands like cd, rd, md, del, echo ren, replace, copy, xcopy, move, attrib, tree, edit, and cls. echo Type [command]/? for detailed info. echo. pause cls :cmd echo Directory: %CD% set /P CMD=Command: if "%CMD%" == "cls" goto cls if "%CMD%" == "home" goto home if "%CMD%" == "desktop" goto desktop if "%CMD%" == "red" goto red if "%CMD%" == "green" goto green %CMD% echo. goto cmd :cls ...
Wednesday, November 16, 2011
How to Enable Regedit in Windows
In this brief article, we'll be discussing how to enable regedit in Windows. regedit.exe or regedit32.exe can be used in both Windows and real mode MS-DOS to edit the registry. Before we get started, remember that it is important to always backup your registry before editing it.
The Windows registry is actually a database that stores all of your operating system settings. In addition to this, the registry also tracks kernel operation and exposes runtime data such as currently active hardware and performance counters.
The registry consists of two important things, keys and values. Keys are very similar to folders on your computer and they contain subkeys. Values contain data and are stored within keys.
Having said all of that, the first thing that you'll need to do to enable regedit is click on Start, then Run. In the command box, type the following:
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0
After hitting "OK", you will be presented with a prompt asking if you want to overwrite the DisableRegistryTools value. Choose "Yes", then hit enter.
Next, type the following command into the command box:
REG add HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0
After you're finished, hit "Enter" and answer "Yes" to the next prompt you're presented with.
Hopefully this short article has helped you enable regedit on your Windows machine. Manually editing the Windows registry is not for the feint of heart, and you should only attempt to do so if you're experienced with such matters. For most users, downloading a registry cleaning and editing program is safer and highly recommended.
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Saturday, November 12, 2011
FreeDOS
Before September 1995, Microsoft Windows was an MS-DOS program. DOS was an easy to use command line operating system that provided you with complete ability to control and troubleshoot your computer. Microsoft's goal was to eliminate DOS, possibly to prevent you from having complete control of your own computer.
The last stand-alone version of MS-DOS was version 6. Unfortunately, that version is not Y2K compliant. Windows 95 and later came with MS-DOS version 7. Unfortunately, that version is too integrated with the operating system. It will not work without access to your hard disk.
FreeDOS is a PC compatible Y2K compliant DOS that you can download from http://www.freedos.org. FreeDOS fits on a single floppy disk and can be used to boot your computer. Download and unzip the file odin7bin.zip (756KB). Unziping will create the files diskcopy.exe and fdodin07.144. Put a blank formatted floppy disk in the drive. In the Start | Run dialog box, or at a command prompt type "diskcopy fdodin07.144 a:" to create a bootable FreeDOS floppy disk.
Why would you want to boot your computer with DOS? Maybe you want to use Windows XP without product activation.
First make sure that the BIOS boot sequence on your computer is configured with the floppy drive as the first boot device (or at least before the C: drive). To get to the BIOS configuration screen, press the "Delete" or "F2" key (depending upon your BIOS) while your computer is starting.
Insert the FreeDOS floppy disk in the floppy drive and start the computer. At the A:>_ prompt type DATE. FreeDOS will return your computer's current date, along with a prompt to enter a new date. Enter the date that you installed Windows XP (or at least a date before the 30 day expiration date). Remove the FreeDOS floppy disk and restart your computer.
Note: This will only work if Windows XP has never been started after the 30 day expiration date. The first time Windows XP is started after the 30 day expiration date will be the last time it starts.
Every time you start your computer, start it first with FreeDOS and reset the computer's date to the date that you installed Windows XP. Windows XP will think time has come to a standstill.
Note: Of course, Your file creation and last modified dates will not be correct, so this is not really a way for a serious user to bypass Windows XP product activation. However for certain purposes, like learning the Windows XP operating system, this can be a way to use Windows XP without product activation.
Microsoft should have made the expiration period much longer than 30 days. Maybe they want you to activate Windows XP before it crashes.
Permission is granted for the below article to forward, reprint, distribute, use for ezine, newsletter, website, offer as free bonus or part of a product for sale as long as no changes are made and the byline, copyright, and the resource box below is included.
Wednesday, November 9, 2011
MS Dos - basal 5 charge apperceive commands - How to DOS -pt1 of 2
MS Dos - basic 5 must know commands - How to DOS - recorded for educational purposes. I opened a new channel www.youtube.com/morozacademy , visit it and subscribe. It will be a channel about Technology and Informational Technologies How To. This is a part 1 out of 2. Make sure to watch part 2.
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Saturday, November 5, 2011
Create a Compound Interest Calculator in Perl
Open a text editor, for example, NotePad, and enter the following lines of code:
#!/usr/bin/perl -w
print "Monthly deposit: "; # prompt for input
$deposit=; # get input from keyboard
chomp $deposit; # remove the newline character from the end of the variable
print "Interest rate (3, 4, 5.5, etc): "; # prompt for input
$interest=; # get input from keyboard
chomp $interest; # remove the newline character from the end of the variable
# Change interest from 3, 4, 5, etc to .03, .04, .05, etc
$interest=$interest*.01;
# Change interest to a monthly multiplier
$interest=$interest/12;
print "No of months: "; # prompt for input
$nMonths=; # get input from keyboard
chomp $nMonths; # remove the newline character from the end of the variable
# The interest calculation
$total=$deposit * (((1 + $interest) ** $nMonths) -1 ) / $interest;
print "After $nMonths months you will have a total amount of $total";
(Note: the spaces on either side of STDIN are for display purposes only in this article. In your script, you can omit them.)
Save the script as interest.pl. Make a note of the directory/folder where you have saved it.
Running the script
You need to run the script from a command line prompt, so open a terminal window/MS-DOS prompt. Change to the directory/folder where the interest.pl file is located, and type the following command:
perl interest.pl
When prompted, enter the monthly deposit, interest rate, and the number of months that the money is deposited.
Error messages
If the script did not work, you probably received one of the following error messages:
'Bad command or filename' or 'command not found'. This means that Perl has not been added to the PATH variable. See your operating system help/documentation for information on how to fix this problem.'Can't open perl script interest.pl: A file or directory does not exist'. This probably means that you are not in the folder/directory where you saved the script, in which case you should change to the correct location.If you get a syntax error, it probably means you have mis-typed the contents of the file. Open the file and fix any mistakes.
Wednesday, November 2, 2011
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