Scramble 500

　　This is a (successful) attempt by jotd to create a 1:1 port of the famous arcade game on Amiga 500 using 100% 68k assembly.

　　REQUIRES:

　　- any 68k CPU

　　- Kickstart 1.3, 1MB memory

　　- Kickstart 2.0, 1MB memory

　　FEATURES:

　　- original portrait layout, visual & sounds

　　- faithful enemy behaviour & speed & increasing difficulty

　　- 50 frames per second (PAL) even on a 68000 A500

　　- all levels

　　- joystick/joypad controlled (port 1) or keyboard controls (arrows + ctrl + alt), P pauses

　　- 2 player mode (still using joystick in port 1)

　　- 2/3 button joystick and CD32 joypad support

　　- can run directly from shell or from whdload (fast machines/high-end configurations)

　　CONTROLS:

　　- joystick directions/arrows: move player

　　- control/left alt/fire button/second button: start game

　　- P/third button (3 joystick button)/play button (cd32): pause

　　- F10 (or quitkey): quit (and save scores)

　　- two button joystick/joypad: fire to shoot, second button to bomb

　　- one button joystick: fire to shoot and bomb

　　- when game is about to start (intro music playing), press any

　　direction to change controls. If a cd32 joypad is connected, two button

　　mode is selected by default. Also, if keyboard is used to launch bombs,

　　it also selects two-button mode.

　　If game is started using bomb or second button, two-button mode is also

　　selected.

　　- when the game prompts "one player only", move the joystick to switch to "two players"

　　HOW TO PLAY:

　　- all levels: shoot/bomb everything! don't miss fuel tanks to avoid running out of fuel

　　- level 1: avoid landscape and flying rockets

　　- level 2: shoot UFOs

　　- level 3: avoid fireballs

　　- level 4: same as 1, just more difficult

　　- level 5: navigate up and down without hitting the walls

　　- level 6: destroy base

　　If you complete all the levels, game restarts at level 1, but this

　　time fuel decreases faster.

　　CREDITS:

　　- Jean-Francois Fabre (aka jotd): code and gfx/sfx conversion

　　- hajodick (EAB): game map rips from the arcade

　　- Andrzej Dobrowolski (aka no9, from EAB): music & sfx loops (plus sfx advice)

　　- Scott Tunstall: brilliant reverse engineering work of the arcade version

　　- Frank Wille (aka phx): sfx/module player (and of course vasm assembler!)

　　- ross (from EAB): help with screen centering

　　- 125scratch: sprite rips https://www.spriters-resource.com/arcade/scramble

　　- DanyPPC: icon

　　- meynaf: random routine

　　- eab.abime.net forum: useful advice, invaluable testing & support

　　- konami: original game :)

　　MINOR ISSUES:

　　- level 4/5 filler bricks are inverted (brick then square) in the bottom section

　　or is it the odd/even tile pattern? well, who cares? not me.

　　- when a highscore is entered, the flashing doesn't work that well

　　- fireball stage fireballs are flickering on some configs (maybe ok now)