$808111		puts a randomly generated number into A and 05E5
$8090CB		play a sound, library 2

$868027		spawns enemy projectile
$868097		spawns enemy projectile

$90BE00		used by fighter pirates, reflec, and bang to delete samus projectile and produce a new one (used in shot reaction AI and special hitbox coding)

$A0A3AF		Death animation
$A0A477		enemy touch AI (enemy die on contact)
$A0A597		alternate touch AI (enemy die on contact)
$A0A63D		A common hit routine, I think. JSR $A6DE, display the 'hit' graphic if applicable. If enemy is at 0 health, set 7E:7002,X to the projectile type ($0C18,Y, AND #$0F00), and play the death animation (JSL $A0A3AF)
$A0A6A7		clear enemy hit flag, runs A6DE (beam damage etc.)
$A0AEED		samus/enemy colission detection (boundary calculations) LDA 0 or 1 dependant
$A0B0B2		Cosine multiplication. (cos (A * 128/pi) * 0E32) --> 0E36.0E39
$A0B0C6		Sine multiplication, (-sin (A * 128/pi) * 0E32) --> 0E36.0E39
$A0B92B		calculates X/Y position then spawns enemy specific projectiles (probably spawns fighter pirate energy/ammo drops after dying)
$A0BBBF		lots of enemy boundary calculations (seems to be trying to find it's location in room, possibly calculating x distance movement)
		used by walking pirates, looks like it's vertical colission routine to stop it from falling?  NOP'd with no observable effects... (only runs when walking left)
$A0C6AB		Common horizontal movement routine, moves by $14.$12. TODO
$A0C786		Common vertical movement routine, moves by $14.$12. TODO


$B4BC26		creates enemy-related sprites like dud shots and hits (no sound). $12/$14 is X/Y, $16 is type. $18 is probably pallete or something... Used by Draygon for Evirs
   0000 = Charge beam shine
   0001 = 3 charge beam spots
   0002 = 3 different charge beam spots, plus yellow shine (?)
   0003 = Normal explosion
   0004 = Bomb explosion
   0005 = crumbling lights? Don't recognize it at all
   0006 = Dud enemy explosion
   0007 = Power bomb (lol)
   0008 = Elevator light (larger than elevator)
   0009 = Smoke (might be the stuff during exploding Ceres/Zebes)
   000A = Small smoke (no idea where it's used)
   000B = Water splash (footsteps in certain areas)
   000C = Yellow smoke (I recognize it, but I don't remember where it's from)
   000D = Small energy
   000E = Large energy
   000F = Bomb
   0010 = Small energy (?), slow animation
   0011 = Very similar to screw attack/speed run debris
   0012 = Large smoke, fast animation (no idea where it's used)
   0013 = Large smoke, fast animation + something in the center at the end of the animation
   0014 = Large smoke, fast animation + something larger in the center
   0015 = Large smoke, normal animation (used by Draygon at least)
   0016 = Looks like miscolored plasma beam...
   0017 = Fast miscolored plasma beam
   0018 = Air bubbles, used by Samus and Draygon
   0019 = Save station lights
   001A = Slow closing gate
   001B = Fast opening gate
   001C = Elevator (doesn't go away)
   001D = Large explosion
   001E+ = Glitchy stuff (tested 1E, 1F, 20, 24, 31, 35, 36, 38, 40)
   0032 = Looks like crackling electricity, doesn't go away. Supposedly used by something.. metroids?
   0033 = More crackling electricity (might not be used)
   0034 = Glitchy. Rapidly flashing stuff, shape suggests it's supposed to be a Metroid shell. Supposedly used, probably by Metroids
   0037 = Freeze hit (used)
   003B = Evirs that assist Draygon (facing left)
   003C = Evirs that assist Draygon (facing right)
   003D = Big air bubbles, used by Draygon

$A0957E		decriments frozen timer, checks if ice beam is equipped
$A09F6D		zeros out several enemy RAM locations $0F8A, $0FA0, $0F9E, $0FA2
$A09F7D		grapple reaction (enemy freeze)
$A09FC4		grapple reaction (enemy die)
$A09FDF		makes enemy run frozen AI pointer
$A09FE9		grapple reaction (enemy freeze + other stuffs)
$A0A03E		grapple reaction (enemy unresponsive?)
$A0A070		makes enemy run frozen AI pointer
$A0A497		general enemy touch AI (contact damage to samus)
$A0A5B7		general enemy touch AI (contact damage to enemy)
$A0A8BC		creates a dud shot (graphic and kills projectile)


=========================================================================

A0:8687 Handle room shaking. 183E contains shake type, looks up displacement in table at A0:872D (2 byte values in pixels: BG1 X, BG1 Y, BG2 X, BG2 Y)
$A0884D	; Something for sprites and sounds
$A08EB6	; Determine which enemies to process.
A0:8FD4 Main routine. See MainEnemyRoutine.txt ; Enemy routines (but can still be killed by power bombs)
$A09169	; Handles Samus getting hurt?
A0:9423 (JSR) Draws enemies, 1 at a time
$A0957E		decriments frozen timer, checks if ice beam is equipped
$A09726	; Something for the graphic update table. Unknown
A0:9758 (JSR) Interaction with Samus, depends on $0F88,X's 2 bit. If set:(projectiles: JSR $9B7F, bombs: JSR $9D23, Samus: JSR $9A5A) Not set:(projectiles: JSR $A143, bombs: JSR $A236, Samus: JSR $A07A)
A0:9785	Bomb Jump routine
$A09894	; Enemy/Room projectiles/objects collisions with Samus. Only does default routine, no customizable options.
$A0996C ; Enemy/Room projectiles/objects collisions with Samus's projectiles.
A0:9A5A (JSR) Check for collision with Samus. If they collide, JSL to that hitbox's 0Ath byte (Samus collision code). This routine disables Samus's invincibility if she is using blue suit or screw attack; if there are no enemies she'll get invincibility time with them.
A0:9B7F (JSR) Check for collisions of all of the enemy's sprites/hitboxes in $0F8E with all projectiles. If there's a collision, JSL $A09D17 then RTS.
A0:9D17 Small routine, just JML to code for enemy/projectile detection. Address used is at (($0F8E,X),(8*n1)),(C*n2). n1 = sprite number, n2 = hitbox number
$A09F6D		zeros out several enemy RAM locations $0F8A, $0FA0, $0F9E, $0FA2
$A09F7D		grapple reaction (enemy freeze)
$A09FC4		grapple reaction (enemy die)
$A09FDF		makes enemy run frozen AI pointer
$A09FE9		grapple reaction (enemy freeze + other stuffs)
$A0A03E		grapple reaction (enemy unresponsive?)
$A0A070		makes enemy run frozen AI pointer
A0:A143 (JSR) Check for collisions of main hitbox with all projectiles. If there's a collision, JSL $A0A226 then RTS.
A0:A226 Small routine, just JML to code for enemy/projectile detection. Address used is projectile pointer in enemy rom ($0F78 + 32)
$A0A3AF		Death animation
A0:A45E Divide damage (A) by 4 for Gravity, or 2 for Varia. Nothing if neither suit. Result in A and $12
$A0A477		enemy touch AI (enemy die on contact)
$A0A497		general enemy touch AI (contact damage to samus)
$A0A597		alternate touch AI (enemy die on contact)
$A0A5B7		general enemy touch AI (contact damage to enemy)
$A0A63D		A common hit routine, I think. JSR $A6DE, display the 'hit' graphic if applicable. If enemy is at 0 health, set 7E:7002,X to the projectile type ($0C18,Y, AND #$0F00), and play the death animation (JSL $A0A3AF)
$A0A6A7		clear enemy hit flag, runs A6DE (beam damage etc.)
A0:A6DE (JSR) Handles beam damage, freezing, and sound.
$A0A8BC		creates a dud shot (graphic and kills projectile)
A0:A8F0 checks for collisions with (active) enemies, and puts something in A depending on the collisions. 0000 means no collisions, FFFF means yes collision(s). Sets 7E:182C,X and 7E:1834,X, 7E:184A - 7E:185B (see RAMMap.txt)
$A0AD70		determines if enemy is on screen or not, LDA 0000 or 0001 dependent
A0:ADE7 Determines if enemies with normal sprites are off screen. I guess. 1 at a time
$A0AEE5		subtract samus x position from enemy x position and end.
$A0AEED		samus/enemy colission detection (boundary calculations) LDA 0 or 1 dependant
$A0AEDD		subtract Samus Y position from enemy Y position and end.
$A0AF0B		checks if enemy is in proximity to Samus (A= 0000 or 0001 depending)
A0:B067 	Get the absolute value of A (also into $0E32)
$A0B07D		x distance from samus to enemy (values inverted depending on direction)
$A0B0B2		Cosine multiplication. (cos (A * 128/pi) * 0E32) --> 0E36.0E39
$A0B0C6		Sine multiplication, (-sin (A * 128/pi) * 0E32) --> 0E36.0E39
A0:B3C3 Not a routine. Table of -cos values (2 bytes each, values from FF00 to 0100. Angle (index/2) from 0 to 13F)
A0:B443 Not a routine. Table of sin values (2 bytes each, values from FF00 to 0100. Angle (index/2) from 0 to FF)
A0:B6FF 16bit ($26) * 16bit ($28) = 32bit ($2A)
$A0B92B		calculates X/Y position then spawns enemy specific projectiles
A0:BB70 Call after pushing a X then Y pixel position onto the stack (2 bytes each). 0DC4 is set with block #, and stack is also cleaned up (do not try to pull Y and X position from stack)
$A0BBBF		lots of enemy boundary calculations (seems to be trying to find it's location in room, possibly calculating x distance movement)
A0:C0AE Rough angle calculation given X (in $12) and Y (in $14). Angle 0 = up (-Y), 40 = right (X), 80 = down (Y), C0 = left (-X)
$A0C18E		determines if enemy is leaving screen SEC (A=0001 and enemy leaving screen) or CLC (A=0000 enemy still on screen) dependent 
A0:C26A (JSR) Enemy instruction AI loop (uses $0F92)
$A0C6AB		Common horizontal movement routine, moves by $14.$12. TODO
$A0C786		Common vertical movement routine, moves by $14.$12. TODO
A0:C8AD X must hold enemy pointer. Align enemy vertically to slopes if currently in contact with slopes.