engine
830001ac XDDD=direction/if active
830001ae =Y position
830001b0 =X position
830001b2
830001b4
830001b6 =ff60=collision bubble top
830001b8 =0000=collision bubble bottom
830001ba =ffe8=collision bubble front(left)
830001bc =0040=collision bubble back(right)
830001be
830001c0 =HP
830001c2 =animation frame
830001c4 HHHH=sprite shape
830001c6 SSSS=sprite set
830001c8 EEXX=enemy engine
830001ca CCCC=sprites chosen(usually 0000)
830001cc =Z position\color
830001ce
830001d0 LLXX=collision effect/action number
830001d2 =collision if active(0000=active 0001=inactive)
830001d4
830001d6 =time invincible
830001d8 =enemy specific(mostly to do with projectiles)
830001da =movement speed
830001dc =time frozen
830001de =hit flash color\hit effect(missle bounce off etc.)
830001e0 =color change after hit
830001e2
830001e4 =next enemy

direction/if active
XDDD
0003=active(some times it's 1)
0000=inactive
0000=facing left
0040=facing right
0100=upsidedown
0000=rightside up

engine data 
EEXX

1200=creeper
1300=quick creeper
1600=ripper
1a00=large HP pickup
1b00=small HP pickup
1c00=missle pickup
1d00=super missle pickup
1f00=shriek bat
5100=space pirate
7500=mother brain

Sprite set
HHHH  SSSS  CCCC

33b4  082b  0000=small HP
33dc  082b  0000=large HP
3404  082b  0000=missle
341c  082b  0000=super missle
342c  082b  0000=power bomb
344c  082b  0000=HP cluster
e100  082c  0200=shriek bat
56f4  082c  0000=creeper
ccd4  082c  0000=ripper
4fac  082e  0000=space pirate




collision effect
LLXX

0000=go through
0100=solid
0200=solid(can jump up through it)
0300=solid(underside damages you for 5 dmg)
0400=5 dmg
0500=25 dmg
0700=0dmg(bounce off)
0900=quick drain
0c00=solid(can't stand on)
0d00-0e=5 dmg(knocks you far)
1800=slow drain
1a00=zipline(believe it or not)
1c00=5 dmg at top(disapears when hit by bottom)
1d00=throws you forward(left)
1f00=recover 5 HP
2000=recover 20 HP
2100=recover 2 missles
2200=recover 2 super missles
2300=recover 1 power bomb
2400=recover 60 HP