mockingboard: rename some things

asm_routines/mockingboard.s

@@ -0,0 +1,153 @@
+; Mockingboad programming:
+; + Has two 6522 I/O chips connected to two AY-3-8910 chips
+; + Optionally has some speech chips controlled via the outport on the AY
+; + Often in slot 4
+;	TODO: how to auto-detect?
+; References used:
+;	http://macgui.com/usenet/?group=2&id=8366
+;	6522 Data Sheet
+;	AY-3-8910 Data Sheet
+
+;========================
+; Mockingboard card
+; Essentially two 6522s hooked to the Apple II bus
+; Connected to AY-3-8910 chips
+;	PA0-PA7 on 6522 connected to DA0-DA7 on AY
+;	PB0     on 6522 connected to BC1
+;	PB1	on 6522 connected to BDIR
+;	PB2	on 6522 connected to RESET
+
+
+; left speaker
+MOCK_6522_ORB1	EQU	$C400	; 6522 #1 port b data
+MOCK_6522_ORA1	EQU	$C401	; 6522 #1 port a data
+MOCK_6522_DDRB1	EQU	$C402	; 6522 #1 data direction port B
+MOCK_6522_DDRA1	EQU	$C403	; 6522 #1 data direction port A
+
+; right speaker
+MOCK_6522_ORB2	EQU	$C480	; 6522 #2 port b data
+MOCK_6522_ORA2	EQU	$C481	; 6522 #2 port a data
+MOCK_6522_DDRB2	EQU	$C482	; 6522 #2 data direction port B
+MOCK_6522_DDRA2	EQU	$C483	; 6522 #2 data direction port A
+
+; AY-3-8910 commands on port B
+;						RESET	BDIR	BC1
+MOCK_AY_RESET		EQU	$0	;	0	0	0
+MOCK_AY_INACTIVE	EQU	$4	;	1	0	0
+MOCK_AY_READ		EQU	$5	;	1	0	1
+MOCK_AY_WRITE		EQU	$6	;	1	1	0
+MOCK_AY_LATCH_ADDR	EQU	$7	;	1	1	1
+
+
+	;========================
+	; Mockingboard Init
+	;========================
+	; Initialize the 6522s
+	; set the data direction for all pins of PortA/PortB to be output
+
+mockingboard_init:
+	lda	#$ff		; all output (1)
+	sta	MOCK_6522_DDRB1
+	sta	MOCK_6522_DDRA1
+	sta	MOCK_6522_DDRB2
+	sta	MOCK_6522_DDRA2
+	rts
+
+	;======================
+	; Reset Left AY-3-8910
+	;======================
+reset_ay_left:
+	lda	#MOCK_AY_RESET
+	sta	MOCK_6522_ORB1
+	lda	#MOCK_AY_INACTIVE
+	sta	MOCK_6522_ORB1
+	rts
+
+	;======================
+	; Reset Right AY-3-8910
+	;======================
+reset_ay_right:
+	lda	#MOCK_AY_RESET
+	sta	MOCK_6522_ORB2
+	lda	#MOCK_AY_INACTIVE
+	sta	MOCK_6522_ORB2
+	rts
+
+
+;	Write sequence
+;	Inactive -> Latch Address -> Inactive -> Write Data -> Inactive
+
+	;=======================
+	; Write Right AY-3-8910
+	;=======================
+	; register in Y
+	; value in X
+
+write_ay_right:
+	; address
+	sty	MOCK_6522_ORA1		; put address on PA
+	lda	#MOCK_AY_LATCH_ADDR	; latch_address on PB
+	sta	MOCK_6522_ORB1
+	lda	#MOCK_AY_INACTIVE	; go inactive
+	sta	MOCK_6522_ORB1
+
+	; value
+	stx	MOCK_6522_ORA1		; put value on PA
+	lda	#MOCK_AY_WRITE		; write on PB
+	sta	MOCK_6522_ORB1
+	lda	#MOCK_AY_INACTIVE	; go inactive
+	sta	MOCK_6522_ORB1
+
+	rts
+
+	;=======================
+	; Write Left AY-3-8910
+	;=======================
+	; register in X
+	; value in Y
+
+write_ay_left:
+	; address
+	sty	MOCK_6522_ORA2		; put address on PA
+	lda	#MOCK_AY_LATCH_ADDR	; latch_address on PB
+	sta	MOCK_6522_ORB2
+	lda	#MOCK_AY_INACTIVE	; go inactive
+	sta	MOCK_6522_ORB2
+
+	; value
+	stx	MOCK_6522_ORA2		; put value on PA
+	lda	#MOCK_AY_WRITE		; write on PB
+	sta	MOCK_6522_ORB2
+	lda	#MOCK_AY_INACTIVE	; go inactive
+	sta	MOCK_6522_ORB2
+
+	rts
+
+	;=======================================
+	; clear ay -- clear all 14 AY registers
+	; should silence the card
+	;=======================================
+clear_ay_left:
+	ldy	#14
+	ldx	#0
+clear_ay_left_loop:
+	jsr	write_ay_left
+	dey
+	bpl	clear_ay_left_loop
+	rts
+
+	;=======================================
+	; clear ay -- clear all 14 AY registers
+	; should silence the card
+	;=======================================
+clear_ay_right:
+
+	ldy	#14
+	ldx	#0
+clear_ay_right_loop:
+	jsr	write_ay_right
+	dey
+	bpl	clear_ay_right_loop
+	rts
+
+

mockingboard/Makefile

@@ -5,14 +5,14 @@ PNG2GR = ../gr-utils/png2gr
 
 all:	dump_ed mock.dsk
 
-mock.dsk:	MOCK_TEST
-	$(DOS33) -y mock_test.dsk BSAVE -a 0x1000 MOCK_TEST
+mock.dsk:	KSP_THEME_UNCOMPRESSED
+	$(DOS33) -y mock_test.dsk BSAVE -a 0x1000 KSP_THEME_UNCOMPRESSED
 
-MOCK_TEST:	mock_test.o
-	ld65 -o MOCK_TEST mock_test.o -C ./apple2_1000.inc
+KSP_THEME_UNCOMPRESSED:	ksp_theme_uncompressed.o
+	ld65 -o KSP_THEME_UNCOMPRESSED ksp_theme_uncompressed.o -C ./apple2_1000.inc
 
-mock_test.o:	mock_test.s
-	ca65 -o mock_test.o mock_test.s -l mock_test.lst
+ksp_theme_uncompressed.o:	ksp_theme_uncompressed.s
+	ca65 -o ksp_theme_uncompressed.o ksp_theme_uncompressed.s -l ksp_theme_uncompressed.lst
 
 ED:	duet.o
 	ld65 -o ED duet.o -C ./apple2_900.inc
@@ -31,5 +31,5 @@ dump_ed:	dump_ed.o notes.o
 
 
 clean:	
-	rm -f *~ TITLE.GR *.o *.lst ED MOCK_TEST dump_ed
+	rm -f *~ TITLE.GR *.o *.lst ED KSP_THEME_UNCOMPRESSED dump_ed