Operation system, Pascal

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.

Show information about hard disks in computer. Works in DOS only.

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.

S programem EditSnd.exe je mozne generovat soubory s priponou SND. Tyto soubory maji slouzit k ozvuceni programu na profesionalni urovni pomoci PC Speakeru. Vyuziva se k tomu preruseni od casovace nastavene na 100Hz tzn. vzorkovaci frekvence prehravanych zvuku je 100Hz. Nedochazi ke zhrouceni hodin vse je osetreno tak aby sly prehravat zvuky, aby spravne sly hodiny a zaroven aby program mohl vykonavat jine ulohy. Vse bezi na pozadi pres int8 viz. unit speaker.pas.

The program locates the file in system variable PATH. The file is entered as a parameter of the program. It saves the result in the ff.dat file.

Substitute find directive for operating system DOS. Scouts around disk and find location file. Result write to text file. Contain switches. If program don't have any switch then write help.

/s - save to file
/f - find file
/d - find in directory

This program enables you to know the size of all the programs in ZIP archive.

Write basic info about DOS. Free bytes on disk C. Used bytes on disk C . Version of DOSu, aktual date and time.

Routine for communicate via IPX protocol. Send or receive data. IPX and SPX are derived from Xerox Network Systems' IDP and SPP protocols, respectively. IPX is a network layer protocol (layer 3 of the OSI Model), while SPX is a transport layer protocol (layer 4 of the OSI Model). The SPX layer sits on top of the IPX layer and provides connection-oriented services between two nodes on the network. SPX is used primarily by client–server applications. More information on https://en.wikipedia.org/wiki/IPX/SPX.