The program fills out grid of a crossword. The file tajnicka.dat works as an entry. It gives the description of the crossword's format, the number of letters for its successful ability to solve and, of course, the words which are supposed to be found. The editor of the crossword is not included.

It displays 0-255 ASCII table. In the times of DOS programming it was unquestionably a very much used program.
Program store text background and after close program, restore it.

It is one of the assignments I made for my friend, but because it is so complicated I resolved to include it in here. By the way, assignments are to be found here.

Program for manipulate with CD-ROM. Get how much CD-ROM you have, letter of CD-ROM, run/stop audio playing.

This program view differences between two files. Names of the files are the parameters of program.

An excellent program which enables you to design completely newcharacters in ASCII set. Your work results can be stored in Dascii.dat file and returned to whenever you need. One of its most interesting functions is that which can read the character from RAM memory (give it a look, some stuff from the source code can be found useful even today).

The programme works with a data file of the type file of obyvatel. It serves as a example on which it can be easily presented how to make entries in to the files, but predominently how to read and search them.

This program detect the extent and the capacity availablein the accessible discs. The result of the search is displayed, or stored in the Disks.tab file. Look at the ways it finds out whether the disc is hard or the network one, because this trick works even today. As far as the investigation about the capacity of disks is concerned, I must admit it needed more thorough elaboration.

Don't be frightened when the red control of the disk mechanism lightsup immediately after the program is running. This only means that the program reads the disk physically. What is the use of it? Since DOS 3.0, each disk includes a sector which the system does not use in order to maintain the compatibility. You must understand that the majority of the installation programs record the information to this sector, thus producing the floppy disk which can't be copied. You may use it either as a hacker program or as a part of your own installation disks.

It changes the colour palette directly in the text mode of DOS withoutswitching to the graphics. The text is first demonstrated in black and then displayed. Really clever, e.g. if you don't want a user to see all the commands which your program gives and of which the display can't be prevented. For example, if you send a command to DOS which can display the well-known "Bad command or file name".