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Prounlok. by Independent (IND)

38 of 634 files independent
2 items
  • Zip / DOS   How to

Emulating PROUNLOK.COM in DOSee.

Use these tabs to make adjustments to the emulation

If the emulation is taking too long to load, you can turn it off.

Applying changes will reload the page and reboot the emulator

Changes will not be applied until this browser tab has been refreshed

DOS programs need a keyboard for user input

ENTER to select or continue
ESC to navigate back or exit
are often used to navigate menus

Emulation too slow?
Set the emulator to use maximum CPU speed
Want to hack around in the DOS prompt?
  1. Mount the DOS tools drive with automatic run program turned off
  2. Then dir u: to list the utilities, some included programs 4dos.com cp.exe acidview.exe pictview.exe
  3. Use mount to list the emulated drives
  4. Learn the DOSBox commands

DOSee pronounced dos/see, is our emulator used to run MS-DOS based software in your web browser.

MS-DOS (Microsoft DOS) was the primary operating system used by PCs during the 1980s to the early 1990s and is the precursor to Microsoft Windows.

DOSee is a slimmed down, modified port of The Emularity.

The Emularity is a multi-platform JavaScript emulator that supports the running of software for legacy computer platforms in a web browser. It is the same platform that's running emulation on the Internet Archive.

EM-DOSBox is a high-performance JavaScript port of DOSBox that is applied by The Emularity for its emulation of the MS-DOS platform.

DOSee uses BrowserFS ZipFS and ZipFS Extras to simulate zip file archives as hard disks within EM-DOSBox.

DOSBox is the most popular MS-DOS emulator in use today and is frequently used by commercial game publishers to run games from their back-catalogues on modern computers.

DOSee, built on The Emularity, EM-DOSBox and DOSBox. Capture screenshot and save function built on canvas-toBlob.js.

[+] Configuration Select all

PROUNLOK is a ONE-TIME process to remove Prolok from your program.
It is an improvement over and replaces PROKEY.COM (a resident program).
Using DBASE as an example:

1.  Isolate PROUNLOK.COM and DBASE.EXE onto a separate subdirectory
    or floppy.  You don't need the original floppy to run this.


If everything works ok you will wind up with a DBASE.EXE that's
about 6K smaller and minus the Vault (Prolok) code.  It's the .EXE
the publisher started with.  You can copy and run it as you like.

Has been tested with dBase III (1.0), Framework, Realia and Excel.
If it doesn't work on your program, consider these possibilities:
  1.  Your program isn't protected by Prolok.  Do a TYPE on the
      .EXE file.  Vault always puts their copyright notice in the
      first 200-300 bytes in plaintext (unencrypted).  Note that
      Ashton-Tate quit using Prolok in Jan 85.  They may go back.
  2.  Is there a procedure for installing your program on hard disk?
      If so, you have the new, rewritten, Prolok.  This program will
      not work.

Kudos to the Lone Victor (PROLOK.UNP) for finding the right intercept
point.  I automated the process.

  V1.0  3/01/85  (First release)
  V1.1  3/02/85  Wraparound when size of .EXE  > 64K
  V1.2  3/30/85  Was not writing final short sector to .EXE

If my program works for you, I would appreciate a contributation of $25.

Robert Wagner
2110 65th Street
Lubbock, TX  79412
806-745-5309 (home), 763-1931 (work), 763-3375 (BBS)
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