diff --git a/demos/demosplash2022/Makefile b/demos/demosplash2022/Makefile
new file mode 100644
index 00000000..59f627db
--- /dev/null
+++ b/demos/demosplash2022/Makefile
@@ -0,0 +1,60 @@
+include ../../Makefile.inc
+
+DOS33 = ../../utils/dos33fs-utils/dos33
+TOKENIZE = ../../utils/asoft_basic-utils/tokenize_asoft
+EMPTYDISK = ../../empty_disk/empty.dsk
+PICTUREDSK = ~/research/picturedsk.git/picturedsk
+LINKER_SCRIPTS = ../../linker_scripts/
+
+all:	hgr_escape.dsk
+
+###
+
+hgr_escape.dsk:	HELLO ESCAPE
+	cp $(EMPTYDISK) hgr_escape.dsk
+	$(DOS33) -y hgr_escape.dsk SAVE A HELLO
+	$(DOS33) -y hgr_escape.dsk BSAVE -a 0xc00 ESCAPE
+
+###
+
+HELLO:	hello.bas
+	$(TOKENIZE) < hello.bas > HELLO
+
+
+#submit:	escape512.zip
+
+#escape512.zip:	ESCAPE escape.s file_id.diz escape_512.dsk
+#	mkdir -p lovebyte2021_escape_512
+#	cp ESCAPE ./lovebyte2021_escape_512
+#	cp *.s ./lovebyte2021_escape_512
+#	cp file_id.diz ./lovebyte2021_escape_512
+#	cp escape_512.dsk ./lovebyte2021_escape_512
+#	cp escape_512.woz ./lovebyte2021_escape_512
+#	cp escape_720p.mp4 ./lovebyte2021_escape_512
+#	cp desire2.png ./lovebyte2021_escape_512
+#	zip -r escape512.zip lovebyte2021_escape_512
+
+####
+
+ESCAPE:	escape.o
+	ld65 -o ESCAPE escape.o -C $(LINKER_SCRIPTS)/apple2_c00.inc
+
+escape.o:	escape.s \
+	logo_intro.s \
+	ay3_write_regs.s escape.s interrupt_handler.s \
+	mA2E_4.s mockingboard_constants.s mockingboard_init.s tracker_init.s
+	ca65 -o escape.o escape.s -l escape.lst
+
+####
+
+make_points:	make_points.o
+	$(CC) -o make_points make_points.o
+
+make_points.o:	make_points.c
+	$(CC) $(CFLAGS) -c make_points.c
+
+####
+
+clean:	
+	rm -f *~ *.o *.lst ESCAPE *.zip make_points
+
diff --git a/demos/demosplash2022/ay3_write_regs.s b/demos/demosplash2022/ay3_write_regs.s
new file mode 100644
index 00000000..63eee339
--- /dev/null
+++ b/demos/demosplash2022/ay3_write_regs.s
@@ -0,0 +1,34 @@
+	;=====================
+	;=====================
+	;=====================
+	; ay3 write regs
+	;=====================
+	;=====================
+	;=====================
+	; write all 14 registers at AY_REGS
+
+ay3_write_regs:
+
+	ldx	#13
+ay3_write_reg_loop:
+
+	lda	#MOCK_AY_LATCH_ADDR     ; latch_address for PB1         ; 2
+	ldy	#MOCK_AY_INACTIVE       ; go inactive                   ; 2
+
+	stx	MOCK_6522_ORA1          ; put address on PA1            ; 4
+	sta	MOCK_6522_ORB1          ; latch_address on PB1          ; 4
+	sty	MOCK_6522_ORB1                                          ; 4
+
+	; value
+	lda	AY_REGS,X
+	sta	MOCK_6522_ORA1          ; put value on PA1              ; 4
+	lda	#MOCK_AY_WRITE          ;                               ; 2
+	sta	MOCK_6522_ORB1          ; write on PB1                  ; 4
+	sty	MOCK_6522_ORB1                                          ; 4
+
+	dex
+	bpl	ay3_write_reg_loop
+
+;	rts
+
+
diff --git a/demos/demosplash2022/hello.bas b/demos/demosplash2022/hello.bas
new file mode 100644
index 00000000..897a2ba6
--- /dev/null
+++ b/demos/demosplash2022/hello.bas
@@ -0,0 +1,8 @@
+5 HOME
+10 PRINT "  HGR ESCAPE -- A 1K BYTE APPLE II INTRO"
+15 PRINT "           BY DEATER / DSR"
+20 PRINT CHR$(4)"CATALOG"
+25 PRINT:PRINT "PRESS ANY KEY TO 'BRUN ESCAPE'"
+30 GET A$
+35 PRINT
+
diff --git a/demos/demosplash2022/interrupt_handler.s b/demos/demosplash2022/interrupt_handler.s
new file mode 100644
index 00000000..0197a712
--- /dev/null
+++ b/demos/demosplash2022/interrupt_handler.s
@@ -0,0 +1,68 @@
+	;================================
+	;================================
+	; mockingboard interrupt handler
+	;================================
+	;================================
+	; On Apple II/6502 the interrupt handler jumps to address in 0xfffe
+	; This is in the ROM, which saves the registers
+	;   on older IIe it saved A to $45 (which could mess with DISK II)
+	;   newer IIe doesn't do that.
+	; It then calculates if it is a BRK or not (which trashes A)
+	; Then it sets up the stack like an interrupt and calls 0x3fe
+
+	; Note: the IIc is much more complicated
+	;	its firmware tries to decode the proper source
+	;	based on various things, including screen hole values
+	;	we bypass that by switching out ROM and replacing the
+	;	$fffe vector with this, but that does mean we have
+	;	to be sure status flag and accumulator set properly
+
+interrupt_handler:
+	php			; save status flags
+	cld			; clear decimal mode
+	pha			; save A				; 3
+				; A is saved in $45 by firmware
+	txa
+	pha			; save X
+	tya
+	pha			; save Y
+
+	inc	$0404		; debug (flashes char onscreen)
+
+
+ay3_irq_handler:
+	bit	MOCK_6522_T1CL	; clear 6522 interrupt by reading T1C-L	; 4
+
+
+.include "play_frame.s"
+.include "ay3_write_regs.s"
+
+	;=================================
+	; Finally done with this interrupt
+	;=================================
+
+done_ay3_irq_handler:
+
+	pla
+	tay			; restore Y
+	pla
+	tax			; restore X
+	pla			; restore a				; 4
+
+	; on II+/IIe (but not IIc) we need to do this?
+interrupt_smc:
+	lda	$45		; restore A
+	plp			; restore flags
+
+	rti			; return from interrupt			; 6
+
+								;============
+								; typical
+								; ???? cycles
+
+
+
+
+
+
+
diff --git a/demos/demosplash2022/mA2E_4.s b/demos/demosplash2022/mA2E_4.s
new file mode 100644
index 00000000..9cb91e30
--- /dev/null
+++ b/demos/demosplash2022/mA2E_4.s
@@ -0,0 +1,588 @@
+peasant_song:
+; register init
+
+track0:
+
+; A: 12
+; B: 55
+; none: a=-1 b=-1 len=0
+; A: 12
+; none: a=0 b=1 len=2
+	.byte $00 ; A=0 L=0
+	.byte $0D ; B=1 L=2
+; A: 24
+; B: 64
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=3 len=2
+	.byte $10 ; A=2 L=0
+	.byte $1D ; B=3 L=2
+; A: 10
+; B: 62
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; B: 60
+; none: a=4 b=5 len=2
+	.byte $20 ; A=4 L=0
+	.byte $2D ; B=5 L=2
+; A: 15
+; none: a=0 b=6 len=2
+	.byte $00 ; A=0 L=0
+	.byte $35 ; B=6 L=2
+; A: 17
+; B: 58
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 10
+; none: a=8 b=9 len=2
+	.byte $40 ; A=8 L=0
+	.byte $4D ; B=9 L=2
+; A: 10
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 22
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 10
+; B: 57
+; none: a=10 b=-1 len=2
+	.byte $54 ; A=10 L=2
+; A: 8
+; B: 58
+; none: a=4 b=11 len=2
+	.byte $20 ; A=4 L=0
+	.byte $5D ; B=11 L=2
+; A: 7
+; B: 57
+; none: a=12 b=9 len=2
+	.byte $60 ; A=12 L=0
+	.byte $4D ; B=9 L=2
+; A: 5
+; B: 55
+; none: a=13 b=11 len=2
+	.byte $68 ; A=13 L=0
+	.byte $5D ; B=11 L=2
+; A: 3
+; B: 53
+; none: a=14 b=1 len=2
+	.byte $70 ; A=14 L=0
+	.byte $0D ; B=1 L=2
+; A: 12
+; B: 52
+; none: a=15 b=16 len=2
+	.byte $78 ; A=15 L=0
+	.byte $85 ; B=16 L=2
+; A: 12
+; none: a=0 b=17 len=2
+	.byte $00 ; A=0 L=0
+	.byte $8D ; B=17 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; B: 55
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 10
+; none: a=0 b=1 len=2
+	.byte $00 ; A=0 L=0
+	.byte $0D ; B=1 L=2
+; A: 12
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 15
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 17
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 17
+; none: a=8 b=-1 len=2
+	.byte $44 ; A=8 L=2
+; A: 17
+; none: a=8 b=-1 len=2
+	.byte $44 ; A=8 L=2
+; A: 29
+; none: a=8 b=-1 len=2
+	.byte $44 ; A=8 L=2
+; A: 29
+; none: a=18 b=-1 len=2
+	.byte $94 ; A=18 L=2
+; A: 27
+; none: a=18 b=-1 len=2
+	.byte $94 ; A=18 L=2
+; A: 26
+; none: a=19 b=-1 len=2
+	.byte $9C ; A=19 L=2
+; A: 24
+; none: a=20 b=-1 len=2
+	.byte $A4 ; A=20 L=2
+; A: 22
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+.byte $ff
+track1:
+
+; A: 12
+; B: 55
+; none: a=10 b=-1 len=2
+	.byte $54 ; A=10 L=2
+; A: 12
+; none: a=0 b=1 len=2
+	.byte $00 ; A=0 L=0
+	.byte $0D ; B=1 L=2
+; A: 24
+; B: 64
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=3 len=2
+	.byte $10 ; A=2 L=0
+	.byte $1D ; B=3 L=2
+; A: 10
+; B: 62
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; B: 64
+; none: a=4 b=5 len=2
+	.byte $20 ; A=4 L=0
+	.byte $2D ; B=5 L=2
+; A: 15
+; none: a=0 b=3 len=2
+	.byte $00 ; A=0 L=0
+	.byte $1D ; B=3 L=2
+; A: 17
+; B: 65
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 10
+; none: a=8 b=21 len=2
+	.byte $40 ; A=8 L=0
+	.byte $AD ; B=21 L=2
+; A: 10
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 22
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 10
+; B: 64
+; none: a=10 b=-1 len=2
+	.byte $54 ; A=10 L=2
+; A: 8
+; B: 65
+; none: a=4 b=3 len=2
+	.byte $20 ; A=4 L=0
+	.byte $1D ; B=3 L=2
+; A: 7
+; B: 64
+; none: a=12 b=21 len=2
+	.byte $60 ; A=12 L=0
+	.byte $AD ; B=21 L=2
+; A: 5
+; B: 62
+; none: a=13 b=3 len=2
+	.byte $68 ; A=13 L=0
+	.byte $1D ; B=3 L=2
+; A: 3
+; B: 60
+; none: a=14 b=5 len=2
+	.byte $70 ; A=14 L=0
+	.byte $2D ; B=5 L=2
+; A: 12
+; B: 52
+; none: a=15 b=6 len=2
+	.byte $78 ; A=15 L=0
+	.byte $35 ; B=6 L=2
+; A: 12
+; none: a=0 b=17 len=2
+	.byte $00 ; A=0 L=0
+	.byte $8D ; B=17 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 10
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 15
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 17
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 17
+; none: a=8 b=-1 len=2
+	.byte $44 ; A=8 L=2
+; A: 17
+; none: a=8 b=-1 len=2
+	.byte $44 ; A=8 L=2
+; A: 29
+; none: a=8 b=-1 len=2
+	.byte $44 ; A=8 L=2
+; A: 29
+; none: a=18 b=-1 len=2
+	.byte $94 ; A=18 L=2
+; A: 27
+; none: a=18 b=-1 len=2
+	.byte $94 ; A=18 L=2
+; A: 26
+; none: a=19 b=-1 len=2
+	.byte $9C ; A=19 L=2
+; A: 24
+; none: a=20 b=-1 len=2
+	.byte $A4 ; A=20 L=2
+; A: 22
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+.byte $ff
+track2:
+
+; A: 15
+; B: 63
+; none: a=10 b=-1 len=2
+	.byte $54 ; A=10 L=2
+; A: 15
+; none: a=7 b=22 len=2
+	.byte $38 ; A=7 L=0
+	.byte $B5 ; B=22 L=2
+; A: 27
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 15
+; none: a=19 b=-1 len=2
+	.byte $9C ; A=19 L=2
+; A: 17
+; B: 62
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 17
+; B: 60
+; none: a=8 b=5 len=2
+	.byte $40 ; A=8 L=0
+	.byte $2D ; B=5 L=2
+; A: 29
+; B: 58
+; none: a=8 b=6 len=2
+	.byte $40 ; A=8 L=0
+	.byte $35 ; B=6 L=2
+; A: 17
+; B: 53
+; none: a=18 b=9 len=2
+	.byte $90 ; A=18 L=0
+	.byte $4D ; B=9 L=2
+; A: 12
+; B: 55
+; none: a=8 b=16 len=2
+	.byte $40 ; A=8 L=0
+	.byte $85 ; B=16 L=2
+; A: 12
+; none: a=0 b=1 len=2
+	.byte $00 ; A=0 L=0
+	.byte $0D ; B=1 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 15
+; B: 51
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 15
+; none: a=7 b=23 len=2
+	.byte $38 ; A=7 L=0
+	.byte $BD ; B=23 L=2
+; A: 27
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 15
+; none: a=19 b=-1 len=2
+	.byte $9C ; A=19 L=2
+; A: 17
+; B: 55
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 17
+; B: 53
+; none: a=8 b=1 len=2
+	.byte $40 ; A=8 L=0
+	.byte $0D ; B=1 L=2
+; A: 29
+; B: 51
+; none: a=8 b=16 len=2
+	.byte $40 ; A=8 L=0
+	.byte $85 ; B=16 L=2
+; B: 50
+; none: a=18 b=23 len=1
+	.byte $90 ; A=18 L=0
+	.byte $BB ; B=23 L=1
+; A: 17
+; B: 48
+; none: a=-1 b=24 len=1
+	.byte $C3 ; B=24 L=1
+; B: 46
+; none: a=8 b=25 len=1
+	.byte $40 ; A=8 L=0
+	.byte $CB ; B=25 L=1
+; A: 12
+; B: 48
+; none: a=-1 b=26 len=1
+	.byte $D3 ; B=26 L=1
+; A: 10
+; none: a=0 b=25 len=4
+	.byte $00 ; A=0 L=0
+	.byte $CF ; B=25 L=3
+; A: 12
+; none: a=4 b=-1 len=4
+	.byte $26 ; A=4 L=3
+.byte $ff
+track3:
+
+; A: 15
+; B: 39
+; none: a=0 b=-1 len=8
+	.byte $10 ; A=0 L=8
+; A: 15
+; none: a=7 b=27 len=2
+	.byte $38 ; A=7 L=0
+	.byte $DD ; B=27 L=2
+; A: 27
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 15
+; none: a=19 b=-1 len=2
+	.byte $9C ; A=19 L=2
+; A: 17
+; B: 41
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 17
+; B: 43
+; none: a=8 b=28 len=2
+	.byte $40 ; A=8 L=0
+	.byte $E5 ; B=28 L=2
+; A: 29
+; B: 46
+; none: a=8 b=29 len=2
+	.byte $40 ; A=8 L=0
+	.byte $ED ; B=29 L=2
+; A: 17
+; B: 48
+; none: a=18 b=26 len=2
+	.byte $90 ; A=18 L=0
+	.byte $D5 ; B=26 L=2
+; A: 12
+; B: 43
+; none: a=8 b=25 len=2
+	.byte $40 ; A=8 L=0
+	.byte $CD ; B=25 L=2
+; A: 12
+; none: a=0 b=29 len=2
+	.byte $00 ; A=0 L=0
+	.byte $ED ; B=29 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 15
+; B: 51
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 15
+; none: a=7 b=23 len=2
+	.byte $38 ; A=7 L=0
+	.byte $BD ; B=23 L=2
+; A: 27
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 15
+; none: a=19 b=-1 len=2
+	.byte $9C ; A=19 L=2
+; A: 17
+; B: 48
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 17
+; B: 51
+; none: a=8 b=25 len=2
+	.byte $40 ; A=8 L=0
+	.byte $CD ; B=25 L=2
+; A: 29
+; B: 53
+; none: a=8 b=23 len=2
+	.byte $40 ; A=8 L=0
+	.byte $BD ; B=23 L=2
+; A: 17
+; B: 58
+; none: a=18 b=16 len=2
+	.byte $90 ; A=18 L=0
+	.byte $85 ; B=16 L=2
+; A: 12
+; B: 55
+; none: a=8 b=9 len=2
+	.byte $40 ; A=8 L=0
+	.byte $4D ; B=9 L=2
+; A: 12
+; none: a=0 b=1 len=2
+	.byte $00 ; A=0 L=0
+	.byte $0D ; B=1 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+.byte $ff
+track4:
+
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 10
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 15
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 17
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 10
+; none: a=8 b=-1 len=2
+	.byte $44 ; A=8 L=2
+; A: 10
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 22
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 10
+; none: a=10 b=-1 len=2
+	.byte $54 ; A=10 L=2
+; A: 8
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 7
+; none: a=12 b=-1 len=2
+	.byte $64 ; A=12 L=2
+; A: 5
+; none: a=13 b=-1 len=2
+	.byte $6C ; A=13 L=2
+; A: 3
+; none: a=14 b=-1 len=2
+	.byte $74 ; A=14 L=2
+; A: 12
+; none: a=15 b=-1 len=2
+	.byte $7C ; A=15 L=2
+; A: 12
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 24
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=2 b=-1 len=2
+	.byte $14 ; A=2 L=2
+; A: 10
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 12
+; none: a=4 b=-1 len=2
+	.byte $24 ; A=4 L=2
+; A: 15
+; none: a=0 b=-1 len=2
+	.byte $04 ; A=0 L=2
+; A: 17
+; none: a=7 b=-1 len=2
+	.byte $3C ; A=7 L=2
+; A: 17
+; none: a=8 b=-1 len=2
+	.byte $44 ; A=8 L=2
+; A: 15
+; none: a=8 b=-1 len=4
+	.byte $46 ; A=8 L=3
+; A: 12
+; none: a=7 b=-1 len=4
+	.byte $3E ; A=7 L=3
+; B: 51
+; none: a=0 b=-1 len=4
+	.byte $06 ; A=0 L=3
+; B: 53
+; none: a=-1 b=23 len=2
+	.byte $BD ; B=23 L=2
+; last: a=-1 c=-1 len=2
+	.byte $85 ; B=16 L=2
+	.byte $FF ; end
+; Octave 0 : 0 0 0 3 0 3 0 3 3 0 16 0 
+; Octave 1 : 45 0 0 19 0 23 0 0 0 0 5 0 
+; Octave 2 : 14 0 2 6 0 8 0 0 0 0 0 0 
+; Octave 3 : 0 0 0 1 0 1 0 2 0 0 2 0 
+; Octave 4 : 4 0 1 5 2 5 0 7 0 2 4 0 
+; Octave 5 : 3 0 4 1 5 2 0 0 0 0 0 0 
+; 30 notes allocated
+;.byte 12,55,24,64,10,62,60,15,17,58,22,57,8,7,5,3,53,52,29,27,26,65,63,51,50,48,46,39,41,43,
+frequencies_low:
+.byte $D1,$51,$E8,$30,$49,$36,$3D,$36,$DC,$44,$24,$48,$CF,$18,$B8,$6C,$5B,$60,$6E,$9B,$B3,$2D,$33,$66,$6C,$7A,$89,$CD,$B7,$A3
+frequencies_high:
+.byte $03,$00,$01,$00,$04,$00,$00,$03,$02,$00,$02,$00,$04,$05,$05,$06,$00,$00,$01,$01,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00
+; total len=61
diff --git a/demos/demosplash2022/mockingboard_constants.s b/demos/demosplash2022/mockingboard_constants.s
new file mode 100644
index 00000000..0d70c32f
--- /dev/null
+++ b/demos/demosplash2022/mockingboard_constants.s
@@ -0,0 +1,21 @@
+init_addresses:
+	.byte <MOCK_6522_DDRB1,<MOCK_6522_DDRA1		; set the data direction for all pins of PortA/PortB to be output
+	.byte <MOCK_6522_ACR,<MOCK_6522_IER		; Continuous interrupts, clear all interrupts
+	.byte <MOCK_6522_IFR,<MOCK_6522_IER		; enable interrupt on timer overflow
+	.byte <MOCK_6522_T1CL,<MOCK_6522_T1CH		; set oflow value, start counting
+	.byte <MOCK_6522_ORB1,<MOCK_6522_ORB1		; reset ay-3-8910
+
+	; note, terminated by the $ff below
+
+init_values:
+	.byte $ff,$ff	; set the data direction for all pins of PortA/PortB to be output
+	.byte $40,$7f
+	.byte $C0,$C0
+	.byte $e7,$4f	; c7ce / 1.023e6 = .050s, 20Hz
+	.byte MOCK_AY_RESET,MOCK_AY_INACTIVE
+
+	; c7ce / 1.023e6 = .050s, 20Hz
+	; 9c40 / 1.023e6 = .040s, 25Hz
+	; 4fe7 / 1.023e6 = .020s, 50Hz
+	; 411a / 1.023e6 = .016s, 60Hz
+
diff --git a/demos/demosplash2022/mockingboard_init.s b/demos/demosplash2022/mockingboard_init.s
new file mode 100644
index 00000000..b98161f3
--- /dev/null
+++ b/demos/demosplash2022/mockingboard_init.s
@@ -0,0 +1,119 @@
+; 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	=	$C400	; 6522 #1 port b data
+MOCK_6522_ORA1	=	$C401	; 6522 #1 port a data
+MOCK_6522_DDRB1	=	$C402	; 6522 #1 data direction port B
+MOCK_6522_DDRA1	=	$C403	; 6522 #1 data direction port A
+MOCK_6522_T1CL	=	$C404	; 6522 #1 t1 low order latches
+MOCK_6522_T1CH	=	$C405	; 6522 #1 t1 high order counter
+MOCK_6522_T1LL	=	$C406	; 6522 #1 t1 low order latches
+MOCK_6522_T1LH	=	$C407	; 6522 #1 t1 high order latches
+MOCK_6522_T2CL	=	$C408	; 6522 #1 t2 low order latches
+MOCK_6522_T2CH	=	$C409	; 6522 #1 t2 high order counters
+MOCK_6522_SR	=	$C40A	; 6522 #1 shift register
+MOCK_6522_ACR	=	$C40B	; 6522 #1 auxilliary control register
+MOCK_6522_PCR	=	$C40C	; 6522 #1 peripheral control register
+MOCK_6522_IFR	=	$C40D	; 6522 #1 interrupt flag register
+MOCK_6522_IER	=	$C40E	; 6522 #1 interrupt enable register
+MOCK_6522_ORANH	=	$C40F	; 6522 #1 port a data no handshake
+
+
+; right speaker
+MOCK_6522_ORB2	=	$C480	; 6522 #2 port b data
+MOCK_6522_ORA2	=	$C481	; 6522 #2 port a data
+MOCK_6522_DDRB2	=	$C482	; 6522 #2 data direction port B
+MOCK_6522_DDRA2	=	$C483	; 6522 #2 data direction port A
+
+; AY-3-8910 commands on port B
+;						RESET	BDIR	BC1
+MOCK_AY_RESET		=	$0	;	0	0	0
+MOCK_AY_INACTIVE	=	$4	;	1	0	0
+MOCK_AY_READ		=	$5	;	1	0	1
+MOCK_AY_WRITE		=	$6	;	1	1	0
+MOCK_AY_LATCH_ADDR	=	$7	;	1	1	1
+
+
+	;========================
+	;========================
+	; Mockingboard Init
+	;========================
+	;========================
+	; Left channel only
+
+mockingboard_init:
+
+	;=========================
+	; Initialize the 6522s
+	; Reset Left AY-3-8910
+	;===========================
+
+;	ldx	#$FF
+;	stx	MOCK_6522_DDRB1
+;	stx	MOCK_6522_DDRA1
+
+;	inx				;	#MOCK_AY_RESET $0
+;	stx	MOCK_6522_ORB1
+;	ldx	#MOCK_AY_INACTIVE	;	$4
+;	stx	MOCK_6522_ORB1
+
+
+;	sei			; disable interrupts, is this necessary?
+
+	;=========================
+	; Setup Interrupt Handler
+	;=========================
+
+	; NOTE: we don't support IIc as it's a hack
+	;	traditionally Mockingboard on IIc was rare
+
+	;========================
+	; set up interrupt
+	; Vector address goes to 0x3fe/0x3ff
+
+	; can save 10 bytes if we load in memory so this
+	; is in the right place automatically
+
+	lda	#<interrupt_handler	; 2
+	sta	$03fe			; 3
+	lda	#>interrupt_handler	; 2
+	sta	$03ff			; 3
+					;=========
+					; 10
+	;=========================
+	; Initialize the 6522s
+	; Reset Left AY-3-8910
+	;===========================
+
+	; entries=10
+	; 14 + 2*entries = 34 bytes
+
+;	assume Y=0 on entry?
+
+	ldy	#0			; 2
+init_it_loop:
+	lda	init_values,Y		; 3
+	ldx	init_addresses,Y	; 3
+	bmi	doneit			; 2
+	iny				; 1
+	sta	$c400,X			; 3
+	bne	init_it_loop		; 2
+doneit:
diff --git a/demos/demosplash2022/play_frame.s b/demos/demosplash2022/play_frame.s
new file mode 100644
index 00000000..35821837
--- /dev/null
+++ b/demos/demosplash2022/play_frame.s
@@ -0,0 +1,132 @@
+play_frame:
+
+	;===============================
+	;===============================
+	; things that happen every frame
+	;===============================
+	;===============================
+
+	;=================================
+	; inc frame counter
+
+	inc	FRAME
+
+	;=================================
+	; rotate through channel A volume
+
+	lda	FRAME
+	and	#$7
+	tay
+	lda	channel_a_volume,Y
+	sta	AY_REGS+8
+
+	;============================
+	; see if still counting down
+
+	lda	SONG_COUNTDOWN
+	bpl	done_update_song
+
+set_notes_loop:
+
+	;==================
+	; load next byte
+
+	ldy	SONG_OFFSET
+track_smc:
+	lda	track4,Y
+
+	;==================
+	; see if hit end
+
+	cmp	#$ff
+	bne	not_end
+
+	;====================================
+	; if at end, loop back to beginning
+
+	inc	WHICH_TRACK
+	ldy	WHICH_TRACK
+	cpy	#5
+	bne	no_wrap
+	ldy	#1
+	sty	WHICH_TRACK
+no_wrap:
+	lda	tracks_l,Y
+	sta	track_smc+1
+	lda	tracks_h,Y
+	sta	track_smc+2
+
+	lda	#0
+	sta	SONG_OFFSET
+
+	beq	set_notes_loop	; bra
+
+not_end:
+
+
+	; NNNNNEEC -- c=channel, e=end, n=note
+
+	pha				; save note
+
+	and	#1
+	tax
+	ldy	#$0E
+	sty	AY_REGS+8,X		; $08 set volume A,B
+
+	asl
+	tax				; put channel offset in X
+
+
+	pla				; restore note
+	pha
+
+	and	#$6
+	lsr
+	tay
+	lda	lengths,Y
+	sta	SONG_COUNTDOWN		;
+
+	pla
+	lsr
+	lsr
+	lsr				; get note in A
+
+	tay				; lookup in table
+
+	lda	frequencies_high,Y
+	sta	AY_REGS+1,X
+;	sta	$500,X
+
+	lda	frequencies_low,Y
+	sta	AY_REGS,X		; set proper register value
+
+	; visualization
+blah_urgh:
+	sta	$400,Y
+	inc	blah_urgh+1
+
+
+	;============================
+	; point to next
+
+	; assume less than 256 bytes
+	inc	SONG_OFFSET
+
+done_update_song:
+	dec	SONG_COUNTDOWN
+	bmi	set_notes_loop
+	bpl	skip_data
+
+channel_a_volume:
+	.byte 14,14,14,14,11,11,10,10
+
+	lengths:
+	.byte 0*8,1*8,2*8,4*8
+
+	tracks_l:
+		.byte <track4,<track0,<track1,<track2,<track3
+	tracks_h:
+		.byte >track4,>track0,>track1,>track2,>track3
+
+
+skip_data:
diff --git a/demos/demosplash2022/tracker_init.s b/demos/demosplash2022/tracker_init.s
new file mode 100644
index 00000000..35f3d151
--- /dev/null
+++ b/demos/demosplash2022/tracker_init.s
@@ -0,0 +1,23 @@
+tracker_init:
+
+	; setup initial ay-3-8910 values (this depends on song)
+
+init_registers_to_zero:
+	ldx	#$13			; init past end to zero others too
+	lda	#0
+;	sta	SONG_OFFSET		; also init song stuff
+;	sta	SONG_COUNTDOWN
+init_loop:
+	sta	AY_REGS,X
+	dex
+	bpl	init_loop
+
+;	jsr	ay3_write_regs
+
+	lda	#$38
+	sta	AY_REGS+7			; $07 mixer (ABC on)
+;	lda	#$0E
+;	sta	AY_REGS+8			; $08 volume A
+;	lda	#$0C
+;	sta	AY_REGS+9			; $09 volume B
+;	sta	AY_REGS+10			; $0A volume C