snes: re-add title screen back in

tb_snes/checksum.inc

@@ -1,2 +1,2 @@
-	.word	$d6a7		; Complement of checksum
-	.word	$2958		; Unsigned 16-bit sum of ROM
+	.word	$cc93		; Complement of checksum
+	.word	$336c		; Unsigned 16-bit sum of ROM

tb_snes/opening.s

@@ -268,18 +268,17 @@ opening_setup_video:
 	sta	$4200		;
 
 
-less:
-
-joypad_read:
+opening_joypad_read:
 	lda     $4212           ; get joypad status
-        and #%00000001          ; if joy is not ready
-        bne joypad_read         ; wait
+        and	#%00000001		; if joy is not ready
+        bne	opening_joypad_read	; wait
 
         lda     $4219           ; read joypad (BYSTudlr)
 
         and     #%11110000      ; see if a button pressed
 
-        beq     less     ; if so, skip and don't move ball
+        beq     opening_joypad_read
+				; if so, skip and don't move ball
 
 	lda	#$80
 	sta	$2100		; Turn off screen

tb_snes/tb1_snes.s

@@ -41,7 +41,7 @@ start_program:
 
 	jsr	display_opening
 
-;	jsr	display_title
+	jsr	display_title
 
 	jsr	level_1
 

tb_snes/title_screen.s

@@ -203,15 +203,24 @@ setup_video:
 
 
 ;	lda	#$81		; Enable NMI (VBlank Interrupt) and joypads
-;	sta	$4200		;
+	lda	#$01		; Enable joypad
+	sta	$4200		;
 
+title_joypad_read:
+        lda     $4212           ; get joypad status
+        and     #%00000001              ; if joy is not ready
+        bne     title_joypad_read     ; wait
 
-overflowing:
+        lda     $4219           ; read joypad (BYSTudlr)
 
-	; repeat forever
-	; stp?
+        and     #%11110000      ; see if a button pressed
 
-	bra	overflowing
+        beq     title_joypad_read
+
+        lda     #$80
+        sta     $2100           ; Turn off screen
+
+        rts
 
 
 ;============================================================================