diff --git a/009.anim_blit/anim_blit.s b/009.anim_blit/anim_blit.s
index 0646436..9b8b9dd 100644
--- a/009.anim_blit/anim_blit.s
+++ b/009.anim_blit/anim_blit.s
@@ -25,7 +25,7 @@ moveBlitterObject:
 	lea	ypos(pc),a4
 	add.l	#1,xpos		; move the blitter object one pixel to the right
 	add.l	#1,ypos		; move the blitter object one pixel down
-	bsr.s 	blitObject64	; blit 64 pixel object (x=d0,y=d1,background=a0,object=a1,mask=a2)
+	bsr 	blitObject64	; blit 64 pixel object (x=d0,y=d1,background=a0,object=a1,mask=a2)
 	cmp.l	#SCREEN_WIDTH-BLIT_BOB_WIDTH64+16,xpos	; check if we need to wrap the x
 	bne.s	.skip
 	move.l	#0,xpos					; wrap x back to 0
diff --git a/009.anim_blit/init.s b/009.anim_blit/init.s
index 0cbf5d0..c0636eb 100644
--- a/009.anim_blit/init.s
+++ b/009.anim_blit/init.s
@@ -5,7 +5,7 @@ init:
 	move	#$7fff,INTENA(a6) ; disable all interrupts	
 
 	;; set up default palette
-	bsr.s	installPalette
+	bsr	installPalette
 	
 	;; set up playfield
 	move.w  #(RASTER_Y_START<<8)|RASTER_X_START,DIWSTRT(a6)
diff --git a/010.blit_speed/blit_speed.s b/010.blit_speed/blit_speed.s
index fbf427c..25197e4 100644
--- a/010.blit_speed/blit_speed.s
+++ b/010.blit_speed/blit_speed.s
@@ -7,7 +7,7 @@
 entry:
 	lea 	CUSTOM,a6
 	bsr	init
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	
 	lea	bitplanes(pc),a0
 	lea	emoji,a1
@@ -19,7 +19,7 @@ entry:
 .blitLoop:
 	bsr	moveBlitterObject
 	dbra	d0,.blitLoop
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	bra.s	.mainLoop
 
 	include	"blit.s"
@@ -31,7 +31,7 @@ moveBlitterObject:
 	lea	ypos(pc),a4
 	add.l	#1,xpos		; move the blitter object one pixel to the left
 	add.l	#1,ypos		; move the blitter object one pixel down
-	bsr.s 	blitMaskedObject64	; blit 64 pixel object (x=d0,y=d1,background=a0,object=a1,mask=a2)
+	bsr 	blitMaskedObject64	; blit 64 pixel object (x=d0,y=d1,background=a0,object=a1,mask=a2)
 	cmp.l	#SCREEN_WIDTH-BLIT_BOB_WIDTH64+16,xpos	; check if we need to wrap the x
 	bne.s	.skip
 	move.l	#0,xpos					; wrap x back to 0
diff --git a/010.blit_speed/constants.i b/010.blit_speed/constants.i
index 9f34d39..90c97e7 100644
--- a/010.blit_speed/constants.i
+++ b/010.blit_speed/constants.i
@@ -2,19 +2,19 @@ LVL3_INT_VECTOR		equ $6c
 SCREEN_WIDTH		equ 320
 SCREEN_HEIGHT		equ 256
 SCREEN_WIDTH_BYTES	equ (SCREEN_WIDTH/8)
-			if SCREEN_COLORS == 32
+			if SCREEN_COLORS==32
 SCREEN_BIT_DEPTH	equ 5
 			endif
-			if SCREEN_COLORS == 16
+			if SCREEN_COLORS==16
 SCREEN_BIT_DEPTH	equ 4
 			endif
-			if SCREEN_COLORS == 8
+			if SCREEN_COLORS==8
 SCREEN_BIT_DEPTH	equ 3
 			endif
-			if SCREEN_COLORS == 4
+			if SCREEN_COLORS==4
 SCREEN_BIT_DEPTH	equ 2
 			endif
-			if SCREEN_COLORS == 2
+			if SCREEN_COLORS==2
 SCREEN_BIT_DEPTH	equ 1
 			endif
 SCREEN_RES		equ 8 	; 8=lo resolution, 4=hi resolution
diff --git a/010.blit_speed/init.s b/010.blit_speed/init.s
index a39f8b2..5dff268 100644
--- a/010.blit_speed/init.s
+++ b/010.blit_speed/init.s
@@ -5,7 +5,7 @@ init:
 	move	#$7fff,INTENA(a6) ; disable all interrupts	
 
 	;; set up default palette
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	
 	;; set up playfield
 	move.w  #(RASTER_Y_START<<8)|RASTER_X_START,DIWSTRT(a6)
diff --git a/011.ehb_mode/constants.i b/011.ehb_mode/constants.i
index 04aab35..2459ae2 100644
--- a/011.ehb_mode/constants.i
+++ b/011.ehb_mode/constants.i
@@ -2,22 +2,22 @@ LVL3_INT_VECTOR		equ $6c
 SCREEN_WIDTH		equ 320
 SCREEN_HEIGHT		equ 256
 SCREEN_WIDTH_BYTES	equ (SCREEN_WIDTH/8)
-			if SCREEN_COLORS == 64
+			if SCREEN_COLORS==64
 SCREEN_BIT_DEPTH	equ 6
 			endif
-			if SCREEN_COLORS == 32
+			if SCREEN_COLORS==32
 SCREEN_BIT_DEPTH	equ 5
 			endif
-			if SCREEN_COLORS == 16
+			if SCREEN_COLORS==16
 SCREEN_BIT_DEPTH	equ 4
 			endif
-			if SCREEN_COLORS == 8
+			if SCREEN_COLORS==8
 SCREEN_BIT_DEPTH	equ 3
 			endif
-			if SCREEN_COLORS == 4
+			if SCREEN_COLORS==4
 SCREEN_BIT_DEPTH	equ 2
 			endif
-			if SCREEN_COLORS == 2
+			if SCREEN_COLORS==2
 SCREEN_BIT_DEPTH	equ 1
 			endif
 SCREEN_RES		equ 8 	; 8=lo resolution, 4=hi resolution
diff --git a/011.ehb_mode/ehb_mode.s b/011.ehb_mode/ehb_mode.s
index 47ddadf..7af7e31 100644
--- a/011.ehb_mode/ehb_mode.s
+++ b/011.ehb_mode/ehb_mode.s
@@ -7,7 +7,7 @@
 entry:
 	lea 	CUSTOM,a6
 	bsr	init
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	
 .mainLoop:
 	bsr 	waitVerticalBlank
diff --git a/011.ehb_mode/init.s b/011.ehb_mode/init.s
index a39f8b2..5dff268 100644
--- a/011.ehb_mode/init.s
+++ b/011.ehb_mode/init.s
@@ -5,7 +5,7 @@ init:
 	move	#$7fff,INTENA(a6) ; disable all interrupts	
 
 	;; set up default palette
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	
 	;; set up playfield
 	move.w  #(RASTER_Y_START<<8)|RASTER_X_START,DIWSTRT(a6)
diff --git a/012.ham_mode/ham_mode.s b/012.ham_mode/ham_mode.s
index b4c5881..747e4bf 100644
--- a/012.ham_mode/ham_mode.s
+++ b/012.ham_mode/ham_mode.s
@@ -7,7 +7,7 @@
 entry:
 	lea 	CUSTOM,a6
 	bsr	init
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	
 .mainLoop:
 	bsr 	waitVerticalBlank
diff --git a/012.ham_mode/init.s b/012.ham_mode/init.s
index 7961c1c..cd9b238 100644
--- a/012.ham_mode/init.s
+++ b/012.ham_mode/init.s
@@ -6,7 +6,7 @@ init:
 	move	#$7fff,INTENA(a6) ; disable all interrupts	
 
 	;; set up default palette
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	
 	;; set up playfield
 	move.w  #(RASTER_Y_START<<8)|RASTER_X_START,DIWSTRT(a6)
diff --git a/013.dithered_ham/dithered_ham.s b/013.dithered_ham/dithered_ham.s
index b4c5881..747e4bf 100644
--- a/013.dithered_ham/dithered_ham.s
+++ b/013.dithered_ham/dithered_ham.s
@@ -7,7 +7,7 @@
 entry:
 	lea 	CUSTOM,a6
 	bsr	init
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	
 .mainLoop:
 	bsr 	waitVerticalBlank
diff --git a/013.dithered_ham/init.s b/013.dithered_ham/init.s
index 7961c1c..cd9b238 100644
--- a/013.dithered_ham/init.s
+++ b/013.dithered_ham/init.s
@@ -6,7 +6,7 @@ init:
 	move	#$7fff,INTENA(a6) ; disable all interrupts	
 
 	;; set up default palette
-	bsr.s	installColorPalette
+	bsr	installColorPalette
 	
 	;; set up playfield
 	move.w  #(RASTER_Y_START<<8)|RASTER_X_START,DIWSTRT(a6)
diff --git a/015.sliced_ham/bin/sliced_ham.adf b/015.sliced_ham/bin/sliced_ham.adf
index 8529681..073216d 100644
Binary files a/015.sliced_ham/bin/sliced_ham.adf and b/015.sliced_ham/bin/sliced_ham.adf differ
diff --git a/016.copper_fun/bin/copper_fun.adf b/016.copper_fun/bin/copper_fun.adf
index d7f39f5..62e6545 100644
Binary files a/016.copper_fun/bin/copper_fun.adf and b/016.copper_fun/bin/copper_fun.adf differ
diff --git a/020.shrinkler/constants.i b/020.shrinkler/constants.i
index 689db18..81bd249 100644
--- a/020.shrinkler/constants.i
+++ b/020.shrinkler/constants.i
@@ -1,7 +1,7 @@
 SCREEN_WIDTH		equ 320
 SCREEN_HEIGHT		equ (256+(256*INTERLACE))
 SCREEN_WIDTH_BYTES	equ (SCREEN_WIDTH/8)
-			if HAM_MODE == 1
+			if HAM_MODE==1
 SCREEN_BIT_DEPTH	equ 6
 			else
 SCREEN_BIT_DEPTH	equ 5
diff --git a/021.calling_c/constants.i b/021.calling_c/constants.i
index 689db18..81bd249 100644
--- a/021.calling_c/constants.i
+++ b/021.calling_c/constants.i
@@ -1,7 +1,7 @@
 SCREEN_WIDTH		equ 320
 SCREEN_HEIGHT		equ (256+(256*INTERLACE))
 SCREEN_WIDTH_BYTES	equ (SCREEN_WIDTH/8)
-			if HAM_MODE == 1
+			if HAM_MODE==1
 SCREEN_BIT_DEPTH	equ 6
 			else
 SCREEN_BIT_DEPTH	equ 5
diff --git a/022.photons_bootloader/constants.i b/022.photons_bootloader/constants.i
index 689db18..81bd249 100644
--- a/022.photons_bootloader/constants.i
+++ b/022.photons_bootloader/constants.i
@@ -1,7 +1,7 @@
 SCREEN_WIDTH		equ 320
 SCREEN_HEIGHT		equ (256+(256*INTERLACE))
 SCREEN_WIDTH_BYTES	equ (SCREEN_WIDTH/8)
-			if HAM_MODE == 1
+			if HAM_MODE==1
 SCREEN_BIT_DEPTH	equ 6
 			else
 SCREEN_BIT_DEPTH	equ 5