--- a/sound/FXHammer.asm
+++ b/sound/FXHammer.asm
@@ -1,166 +1,13 @@
+; Stubs for the FX Hammer sound effect player (Aleksi Eeben), which the FredyGames build leaves out:
+; its redistribution terms are not stated. Door and knock sound effects are silent in this build.
 
-; Disassembly of Aleksi Eeben's FX Hammer SFX player
+SECTION	"FX Hammer",ROMX
 
-SECTION	"FX Hammer",ROMX,ALIGN[8]
-
-FXHammerData::
-INCBIN	"sound/SFXData.bin"
-		
-; thumbprint (this could be removed to save space)
-	db	"FX HAMMER Version 1.0 (c)2000 Aleksi Eeben (email:aleksi@cncd.fi)"
-	
-	; Call with SFX ID in c
 FXHammer_Trig::
-	ld	b,high(FXHammerData)
-	ld	hl,FXHammer_RAM1
-	ld	a,[bc]
-	cp	[hl]
-	jr	z,.continue
-	ret	c
-.continue
-	ld	[hl],a
-	inc	b
-	ld	a,[bc]
-	swap	a
-	and	$f
-	ld	l,low(FXHammer_SFXCH2)
-	or	[hl]
-	ld	[hl],a
-	ld	a,[bc]
-	and	$f
-	ld	l,low(FXHammer_SFXCH4)
-	or	[hl]
-	ld	[hl],a
-	ld	l,low(FXHammer_cnt)
-	ld	a,1
-	ld	[hl+],a
-	xor	a
-	ld	[hl+],a
-	ld	a,HIGH(FXHammerData) + 2
-	add	c
-	ld	[hl],a
-	ret
-	
-FXHammer_Stop:
-	ld	hl,FXHammer_SFXCH2
-	bit	1,[hl]
-	jr	z,.jmp_4084
-	ld	a,$08
-	ldh	[rNR22],a
-	ld	a,$80
-	ldh	[rNR24],a
-	ld	[hl],1
-.jmp_4084
-	ld	l,low(FXHammer_SFXCH4)
-	set	0,[hl]
-	bit	1,[hl]
-	jr	z,.jmp_4096
-	ld	a,$08
-	ldh	[rNR42],a
-	ld	a,$80
-	ldh	[rNR44],a
-	ld	[hl],1
-.jmp_4096
-	ld	l,low(FXHammer_RAM1)
-	xor	a
-	ld	[hl+],a
-	ld	[hl],a
 	ret
-	
-FXHammer_Update:
-	xor	a
-	ld	hl,FXHammer_cnt
-	or	[hl]
-	ret	z
-	dec	[hl]
-	ret	nz
-	inc	l
-	ld	a,[hl+]
-	ld	d,[hl]
-	ld	e,a
-	ld	a,[de]
-	ld	l,low(FXHammer_cnt)
-	ld	[hl-],a
-	or	a
-	jr	nz,.jmp_40b0
-	ld	[hl],a
-.jmp_40b0
-	ld	l,low(FXHammer_SFXCH2)
-	bit	1,[hl]
-	jr	z,.jmp_40e5
-	inc	e
-	ld	a,[de]
-	or	a
-	jr	nz,.jmp_40c7
-	ld	[hl],1
-	ld	a,$08
-	ldh	[rNR22],a
-	ld	a,$80
-	ldh	[rNR24],a
-	jr	.jmp_40e6
-.jmp_40c7
-	ld	b,a
-	ldh	a,[rNR51]
-	and	$dd
-	or	b
-	ldh	[rNR51],a
-	inc	e
-	ld	a,[de]
-	ldh	[rNR22],a
-	inc	e
-	ld	a,[de]
-	ldh	[rNR21],a
-	inc	e
-	ld	a,[de]
-	ld	b,high(FXHammerData)
-	ld	c,a
-	ld	a,[bc]
-	ldh	[rNR23],a
-	inc	c
-	ld	a,[bc]
-	ldh	[rNR24],a
-	jr	.jmp_40e9
-.jmp_40e5
-	inc	e
-.jmp_40e6
-	inc	e
-	inc	e
-	inc	e
-.jmp_40e9
-	ld	l,low(FXHammer_SFXCH4)
-	bit	1,[hl]
-	jr	z,.jmp_4119
-	inc	e
-	ld	a,[de]
-	or	a
-	jr	nz,.jmp_4100
-	ld	[hl],1
-	ld	a,$08
-	ldh	[rNR42],a
-	ld	a,$80
-	ldh	[rNR44],a
-	jr	.jmp_4119
-.jmp_4100
-	ld	b,a
-	ldh	a,[rNR51]
-	and	$77
-	or	b
-	ldh	[rNR51],a
-	inc	e
-	ld	a,[de]
-	ldh	[rNR42],a
-	inc	e
-	ld	a,[de]
-	ldh	[rNR43],a
-	ld	a,$80
-	ldh	[rNR44],a
-	inc	e
-	ld	l,low(FXHammer_ptr)
-	ld	[hl],e
+
+FXHammer_Stop::
 	ret
-.jmp_4119
-	ld	l,low(FXHammer_ptr)
-	ld	a,8
-	add	[hl]
-	ld	[hl],a
+
+FXHammer_Update::
 	ret