LightCrusader

RAM:
$FFA800 buff - DMA'd window tilemap
$FFAA04 byte -
$FFEBA4 long - LONG(4bytes) copy of $FFFF80
$FFEBA8 word - WORD copy of $EBA6 (ACTUAL player input)

$FFEFE8 byte - Screen transition
$FFEB00 byte - any write increases Player Life
$FFF800 buff - SMPS sound buffer
$FFEBA0 byte - (MENU) cursor auto-move timer
$FFEC13 byte - Current MENU list/layout
$FFEC27 byte - (MENU: MAGIC) Current selection in MAGIC menu
$FFEFEC word - OLD value of $FFF022
$FFF130 list - Magic points (4 bytes, in order: wind,fire,earthquake,heal)

$FFF022 word - bitselection for the MAGIC powers:
		%00000000 0000hefw (hefw: disable/enable heal|earthquake|fire|wind)

$FFFF80 - Controller input buffer 1
$FFFF88 - Controller input buffer 2
Format:
 $00 | Type:
     | $02 - 3pad
     | $04 - 6pad
 $01 | 6pad input data (4 bits MXYZ) %pppphhhh p=pressed h=holding
 $02 | SACBRLDU hold
 $03 | SACBRLDU press

 ROM:
 $003BD2 - Checks if magicbits changed
 $00DEB8 - (ROUTINE) checks TRIGGER (ABC) input by the player [MXYZ check goes here]
 $00DDD8 - (ROUTINE) casts the magic spells
 $0037A8 - Check if player presses START to open the menu
 $026E72 - Check if player presses C at the MAGIC MENU to bitset magic spells (d0: bit to set using bset)
 $023052 - Refresh MAGIC display

; ====================================================================
; XYZM patch to enable/disable spells
;
; US ROM
; ====================================================================

	; at $DEB8:
	; 4E B9 00 02 7E 00
	; 4E 75
	;
	; at $27E00
		move.b	($FFFFEBA5),d7		; Get MZYXpress|MZYXhold
		btst	#4,d7			; X hold?
		beq.s	.nothold_x
		bchg	#2,($FFFFF023).w
		bchg	#2,($FFFFEFED).w
.nothold_x:
		btst	#5,d7			; Y hold?
		beq.s	.nothold_y
		bchg	#1,($FFFFF023).w
		bchg	#1,($FFFFEFED).w
.nothold_y:
		btst	#6,d7			; Z hold?
		beq.s	.nothold_z
		bchg	#0,($FFFFF023).w
		bchg	#0,($FFFFEFED).w
.nothold_z:
		btst	#7,d7			; M hold?
		beq.s	.nothold_m
		bchg	#3,($FFFFF023).w
		bchg	#3,($FFFFEFED).w
.nothold_m:
		jsr	($23052).l		; Update status
		move.b  ($FFFFEB38).w,d7	; Original code
		jsr	($E0A4).l
		jmp	($DEC0).l