Mega Man 4/RAM map

Joypad Memory

RAM

RAM	Function	Details
$14	Joypad 1 - Button Push Bits	Bits possible values : [0 = Not Recently Pushed Down, 1 = Recently Pushed Down]
$15	Joypad 2 - Button Push Bits	Bits possible values : [0 = Not Recently Pushed Down, 1 = Recently Pushed Down]
$16	Joypad 1 - Button Status Bits	Bits possible values : [0 = Not Being Pressed Down, 1 = Being Pressed Down]
$17	Joypad 2 - Button Status Bits	Bits possible values : [0 = Not Being Pressed Down, 1 = Being Pressed Down]

LSB to MSB

RAM

RAM	Function	Details	Value	Description
$300-$317	Object ID
$318-$32F	X Coordinate Ratio Counter
$330-$347	X Coordinate
$348-$35F	X Screen (Level Screen)
$360-$377	Y Coordinate Ratio Counter
$378-$38F	Y Coordinate
$390-$3A7	Y Screen
$3A8-$3BF	Horizontal Speed Low
$3C0-$3D7	Horizontal Speed High
$3D8-$3EF	Vertical Speed Low
$3F0-$407	Vertical Speed High
$408-$41F	Substance and Shape			Object's Byte: MSB bit0: Substance (If Set, MM is damaged if hitting Object) bit1: Weapon damage If 0, Weapons are deflected (however, if the weapon is set to do no damage for that object, nothing happens.) If 1, Object is damaged by weapons (however, if the weapon is set to do no damage for that object, the weapon is deflected if object is set to visible with bit 5 of Sprite Flag (of 528). If it is invisible, nothing happen.) bit2-bit7 : Shape ID (Decides Height and Width setting of occupying space). LSB Megaman's byte in this array ($408) has no use, appearently.
$420-$437	Direction Bits Object's Byte: MSB bit4: Up (Not neccesarily set when Jumping) bit5: Down (Not neccesarily set when falling from gravity.) bit6: Left bit7: Right LSB
$438-$44F	Enemy Number# of Level Useful to $FCBE to know which enemy to disable.
$450-$467	Enemy HP