MEGA-DRIVE
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by Peter Fothergill
from ZX Computing, May 1986

Mega-Drive is a machine code arcade game for the Spectrum (all versions), in
which all you have to do is blast the enemy ships before they blast you! Your
force field can take nine hits before it's destroyed. Controls are Z/X =
left/right and Symbol Shift = fire.

Listing 1
This is the loader program for entering the machine code. Type it in and RUN
it, and enter the m/c from Listing 2.

Listing 2
The numbers in the left-hand column are the memory addresses for the code 
dont type these in, just type in the numbers in the second column onwards,
typing ENTER after each one. There is a check built into Listing 1, so if
youve made a mistake it will tell you. If this happens delete listing 1 line
by line (dont type NEW) and enter Listing 3.

Listing 3
This will print out all the machine code that youve typed in and allow you
to compare it with the data in ListIng 2 in order to locate your mistake.
Correct errors with the command POKE address, correct number.

Listing 4
This is the loader for the finished game. Once youve corrected all the
errors type this in and enter as a direct command the following statement;
SAVE "MEGADRIVE" LINE 1: SAVE "MEGACODE" CODE 25000,2511 then follow the
prompts to save the game onto a blank cassette. To run the game without
loading it in from tape again, use: RANDOMIZE USR 25000.
