mist: have IIc mockingboard support in theory working

games/mist/link_book_mist_dock.s

@@ -8,12 +8,43 @@ mist_link_book:
 	and	#SOUND_MOCKINGBOARD
 	beq	skip_turn_off_music
 
-	sei				; disable interrupts
+	; disable interrupts
+	jsr	mockingboard_disable_interrupt
+
+	sei
 
 	jsr	clear_ay_both
 
 skip_turn_off_music:
 
+	; load sound effect into language card
+	; do this late as IIc mockingboard support messes with language card
+
+	 ; update sound status
+        lda     SOUND_STATUS
+        and     #SOUND_IN_LC
+        beq     skip_load_linking_noise
+
+        ; load sounds into LC
+
+        ; read ram, write ram, use $d000 bank1
+        bit     $C08B
+        bit     $C08B
+
+        lda     #<linking_noise_compressed
+        sta     getsrc_smc+1
+        lda     #>linking_noise_compressed
+        sta     getsrc_smc+2
+
+        lda     #$D0    ; decompress to $D000
+
+        jsr     decompress_lzsa2_fast
+
+   ; read rom, nowrite, use $d000 bank1
+        bit     $C08A
+
+skip_load_linking_noise:
+
 	; clear screen
 
 	lda	#0

games/mist/mist_title.s

@@ -104,33 +104,13 @@ yes_language_card:
 	ora	#SOUND_IN_LC
 	sta	SOUND_STATUS
 
-	; load sounds into LC
-
-	; read ram, write ram, use $d000 bank1
-	bit	$C08B
-	bit	$C08B
-
-	lda	#<linking_noise_compressed
-	sta	getsrc_smc+1
-	lda	#>linking_noise_compressed
-	sta	getsrc_smc+2
-
-	lda	#$D0	; decompress to $D000
-
-	jsr	decompress_lzsa2_fast
-
-blah:
-
-	; read rom, nowrite, use $d000 bank1
-	bit	$C08A
-
 no_language_card:
 
 	;===================================
 	; Setup Mockingboard
 	;===================================
 
-PT3_ENABLE_APPLEIIC = 1
+PT3_ENABLE_APPLE_IIC = 1
 
 	lda	#0
 	sta	DONE_PLAYING
@@ -811,7 +791,11 @@ get_mist_book:
 
 	jsr	mockingboard_init
 	jsr	reset_ay_both
-	jsr	mockingboard_setup_interrupt
+
+;	jsr	mockingboard_setup_interrupt
+
+	; to make it work on IIc?
+	jsr	done_iic_hack
 
 	jsr	pt3_init_song
 
@@ -911,3 +895,4 @@ set_inverse:
 
         rts
 
+

games/mist/pt3_lib_mockingboard_detect.s

@@ -34,10 +34,17 @@
 
 mockingboard_detect:
 
-	; activate IIc mockingboard?
+	; activate Mockingboard IIc
-	; this might only be necessary to allow detection
+	; + the Mockingboard has to take over Slot#4 (IIc has no slots)
-	; I get the impression the Mockingboard 4c activates
+	;   in theory any write to the firmware area in $C400 will
-	; when you access any of the 6522 ports in Slot 4
+	;   activate it, but that might not be fast enough when detecting
+	;   so writing $FF to $C403/$C404 is official way to enable
+	; + Note this disables permanently the mouse firmware in $C400
+	;   so "normal" interrupts are broken :(  The hack to fix things
+	;   is to switch in RAM for $F000 and just replace the IRQ
+	;   vectors at $FFFE/$FFFF instead of $3FE/$3FF but that makes
+	;   it difficult if you actually wanted to use any
+	;   Applesoft/Monitor ROM routines
 
 .ifdef PT3_ENABLE_APPLE_IIC
 	lda	APPLEII_MODEL
@@ -46,10 +53,10 @@ mockingboard_detect:
 
 	lda	#$ff
 
-	; don't bother patching these, IIc mockingboard always slot 4?
+	; don't bother patching these, IIc mockingboard always slot 4
 
-        sta	MOCK_6522_DDRA1
+        sta	MOCK_6522_DDRA1		; $C403
-	sta	MOCK_6522_T1CL
+	sta	MOCK_6522_T1CL		; $C404
 .endif
 
 not_iic:

games/mist/pt3_lib_mockingboard_setup.s

@@ -182,8 +182,6 @@ mockingboard_setup_interrupt:
 
 	sei				; disable interrupts
 
-
-
 copy_rom_loop:
 	lda	$c089			; read ROM, write RAM1
 	lda	$c089
@@ -214,11 +212,12 @@ write_rom_loop:
 	lda	#>interrupt_handler
 	sta	$ffff
 
-	lda	#$EA			; nop out the "lda $45" in the irq handler
+
+	; nop out the "lda $45" in the irq handler
+	lda	#$EA
 	sta	interrupt_smc
 	sta	interrupt_smc+1
 .endif
-
 done_iic_hack: