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Unprotect for Spy Hunter by Independent (IND)

1 of 1 file the ross dos
4 items
  • Zip / DOS   Guides and how-tos

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

Changes are not applied until the browser tab is reloaded

DOS programs need a keyboard for user input
Some common keys used in DOS programs

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
Need to turn off the audio?
Disable sound card support

Have no audio?
  1. Try SoundBlaster 1.0 hardware
  2. Try Covox Sound Master hardware
  3. The song or audio file maybe missing from the program
  4. Audio may not be supported
    Unlike other systems of the era, audio for DOS was unfortunately complicated for both programmers and end users alike. A lot of early scene software didn't bother including it. While those that did often didn't test it on all the hardware they supposedly supported.

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 discontinued, 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 Copy text
Unprotect for Spy Hunter (a game on the IBM PC). From: The Ross DOS 5-26-86 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 is SPYHUNT.EXE. Briefly, you simply have to go through the files SPYHUNT.SD and run SPYHUNT.EXE to run it. Addition files: SPYHUNT.ASM - source for SPYHUNT.EXE
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