Category : A Collection of Games for DOS and Windows
Archive   : JUMPJET.ZIP
Filename : JUMPJET.DOC

SHAREWARE!!!

JUMPJET is user-support software and you are encouraged to share
this software with others. Feel free to circulate JUMPJET over
bulletin boards or in Shareware libraries. If the software is
found interesting or useful, then register the software. If
registered, an updated version of JUMPJET will be sent along with
a printed owners manual. A registration fee of FIFTEEN dollars
will entitle you to these supplements.

DEVELOPMENT

Jumpjet was written almost entirely in assembly language using
the Microsoft macro assembler 5.1. The front end or the menu in-
terface and the high-score database was written in C using the
Microsoft C compiler 5.1.

I tried to keep speed in mind while writing this software. Even
though there may be 50 to 100 objects animating on the screen at
one time, the game will have no problem processing the informa-
tion quickly. Running Jumpjet on a 386 33MHz machine will appear
to run at the same speed as a 6MHz 286 machine. There are ap-
proximately 18 frames per second. You will notice, however, a
speed deference on slower machines. An 8088 or 8086 machine run-
ning at 4.77 MHz will lag at times, but still usable. I found
that a NEC V-20/V-30 (replaces the Intel 8088/8086 and execute
about 30% faster) chip in the slower machines helps tremendously.
There is almost no lag. Also the 8088/8086 machines running
faster than 4.77MHz seem to have no problem.

GETTING STARTED

It is a good idea to make a backup of your original disk. Jumpjet
has only a few files. They are JJCOLOR.EXE, JJEGAHI.EXE,
JJEGALO.EXE, JJHERC.EXE, JUMPJET.DOC and JUMPJET.SCR. If for some
reason the file JUMPJET.SCR is not on the disk, don't worry. This
file is the score database file and if it does not exist, the
program will create a new one.

INSTALLING TO HARD DISK

1. Place your disk (or its backup) in drive A:.
2. Enter into your hard disk root directory.
3. Type MD\JUMPJET and press ENTER.
4. Type CD\JUMPJET and press ENTER.
5. Type COPY A:*.* and press ENTER.







INSTALLING TO A FLOPPY (BACKUP)

The program does not need to be installed onto a floppy, but it
is a good idea to make a backup of the disk.

1. Place your DOS system disk in drive A:.
2. If you have one drive, type DISKCOPY and press enter.
If you have two drives, type DISKCOPY A: B: and press
ENTER.
3. Follow the screen prompts.

JUMPJET FILES

JUMPJET.EXE - This file will allow you to select the graphics
display that best fits your system. Note: This
will not automatically select the graphics display
type for your computer.
JJCOLOR.EXE - This file is the main program for Color Graphics
Adapters (CGA).
JJEGAHI.EXE - This file is the main program for Enhanced
Graphics Adapter. The EGA mode is 640 X 350 in
resolution and uses sixteen colors. This mode was
included by popular requests.
JJEGALO.EXE - Same as JJEGAHI but the resolution is 640 X 200.
JJHERC.EXE - This is the main program for Hercules graphics
adapter.
JUMPJET.SCR - This file is the score database. It contains all
the top ten high-scores. NOTE: If you are using a
floppy, make sure that the floppy is not WRITE
PROTECTED.

RUNNING JUMPJET

1. If you are starting from a floppy disk: Place the disk
into drive A: and type JUMPJET and press ENTER. Follow
the screen prompts. (Read note.)
2. If you are starting from a hard disk: Type CD\JUMPJET
and press ENTER. Next type JUMPJET and press ENTER.
Follow the screen prompts. (Read note)

NOTE: JJCOLOR.EXE, JJEGAHI.EXE, JJEGELO.EXE and
JJHERC.EXE are different programs. See Jumpjet Files
for explanation. Run the program that best fits your
system. The program JUMPJET will run the select file.
I.E., if CGA 4 color mode was selected, then JJCOLOR is
executed.

THE GRAPHICS SELECTION MENU
You will see a pop-up menu describing various types of graphics
adapters. Select the one that best fits your system. Use the UP
and DOWN arrow keys to highlight an item and press ENTER to
select that particular graphics display.







THE MAIN MENU

The first screen you will see is the main menu. This is where you
can select from playing the game, introduction, saving the score,
reviewing the score, registration and exiting the game. To
select an item, use the up and down ARROW keys and press ENTER or
press the capitalized letter of the desired item.

GAME CONTROLS

You can control your jet by pressing the ARROW keys in the cor-
responding direction you want the jet to go. By pressing the same
direction again, the jet will accelerate in that direction.

PAUSING YOUR GAME

If you wish to pause the game, press P. Press any key to continue
play.


EXITING YOUR GAME

If you wish exit the game, press ESC and you will enter the main
menu. From the main menu, press 'E' or highlight the 'Exit' item
and press ENTER.

THANKS!

Well, this is it. Give Jumpjet a try. I hope you'll have fun
playing this game and thanks for playing!

If you have any suggestions or ideas, please let me know. I would
like to here from you, and if have any gripes, also let me know.

DISCLAIMER

The author of this software has used his best efforts in prepar-
ing the software. These efforts include development, research and
testing to determine its effectiveness.

The author makes no warranty of any kind, expressed or implied,
with regard of this software or documentation. The author shall
not be liable in any event for incidental or consequential
damages in connection with, or arising out of, the furnishing,
performance, or use of the software.

Montsoft
P.O. Box 4426
Orange, CA 92613-4426