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Unprotect for Spy Hunter. by Independent (IND)

88 of 30,906 files
4 items
  • Zip / DOS   How to

Emulating SPYHUNT.EXE 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

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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
Unprotect for Spy Hunter (a game on the IBM PC).
From: The Ross DOS

Spy Hunter is one of those annoying programs that has to be
booted from the original diskette to use.  Yet, it is such a good
game that I felt that a little effort on my part was in need.
Using this unprotect, you too can have a broken Spy Hunter game;
this allows you to make archive backups and even store it on your
hard disk.

The protection method is outlined below:

-it has to be booted from the original disk
-the boot sector
 -checks for a unreadable track # 1
 -checks your system for enough memory and color adapter
 -loads the game from track #2 to track #30
-once the game is loaded
 -the CS is at 100:1000
 -the DS and ES is at 200:0000
 -the SS is at 1E00
 -the SP is at 1FF0
-the execution starts at 100:1000

I used Symbolic Debug to get the program off the disk and into a
file.  I saved this procedure in the file SPYHUNT.SD.  If you
don't have Symbolic Debug, then just use debug and modify it a
bit.  By tracing through the boot sector program, I found that
the file I made could be directly loaded into memory.  I then
wrote an assembly program to load the game and run it.  This file

Briefly, you simply have to go through the files
and run SPYHUNT.EXE to run it.

Addition files:

SPYHUNT.UNP 80x41 Font