diff --git a/music/pt3_lib/Makefile b/music/pt3_lib/Makefile
index ca78841d..8b4ca36c 100644
--- a/music/pt3_lib/Makefile
+++ b/music/pt3_lib/Makefile
@@ -3,6 +3,7 @@ include ../../Makefile.inc
 DOS33 = ../../utils/dos33fs-utils/dos33
 PNG2GR = ../../utils/gr-utils/png2gr
 TOKENIZE = ../../utils/asoft_basic-utils/tokenize_asoft
+EMPTY_DISK = ../../empty_disk
 
 all:	pt3_lib.dsk
 
@@ -10,7 +11,7 @@ $(DOS33):
 	cd ../../utils/dos33fs-utils && make
 
 pt3_lib.dsk:	PT3_TEST HELLO
-	cp empty.dsk pt3_lib.dsk
+	cp $(EMPTY_DISK)/empty.dsk pt3_lib.dsk
 	$(DOS33) -y pt3_lib.dsk SAVE A HELLO
 	$(DOS33) -y pt3_lib.dsk BSAVE -a 0x1000 PT3_TEST
 
@@ -23,6 +24,7 @@ PT3_TEST:	pt3_test.o
 	ld65 -o PT3_TEST pt3_test.o -C ../../linker_scripts/apple2_1000.inc
 
 pt3_test.o:	pt3_test.s \
+	pt3_lib_detect_model.s \
 	pt3_lib_init.s pt3_lib_core.s pt3_lib_irq_handler.s \
 	pt3_lib_mockingboard_detect.s pt3_lib_mockingboard_setup.s \
 	interrupt_handler.s zp.inc
diff --git a/music/pt3_lib/README.pt3_lib b/music/pt3_lib/README.pt3_lib
index 73d898f3..59fec17c 100644
--- a/music/pt3_lib/README.pt3_lib
+++ b/music/pt3_lib/README.pt3_lib
@@ -1,10 +1,10 @@
-The PT3_player Library	version 0.2
+The PT3_player Library	version 0.3
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 	by Vince "Deater" Weaver <vince@deater.net>
 	http://www.deater.net/weave/vmwprod/pt3_lib/
 
-	Last Update: 28 December 2019
+	Last Update: 30 May 2021
 
 	Plays Vortex Tracker II .pt3 files on the Apple II
 
@@ -73,8 +73,46 @@ To get a pt3 file playing:
 	+ If you want the music to Loop then set the LOOP value to 1.
 	
 
-Using the Code (cycle-counted):
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Notes on Using on a IIc
+~~~~~~~~~~~~~~~~~~~~~~~
+I usually test this code mostly on a II+ and IIe.
+
+Version 0.3 adds support for the IIc as well (having Mockingboards in a
+IIc was rare due to the lack of expansion port, but you can get mockingboard
+compatible cards that plug into the CPU socket)
+
+This does involve adding some Apple II model detection code to the pt3 player
+which does increase the size a bit.
+
+Things that are different on IIc:
+	+ For the board to get detected you have to touch the slot4
+		registers for some reason
+	+ IRQ support is much more complex on the IIc.  We support things
+		by switching out the default ROM IRQ handler with
+		language-card RAM and place our own handler where the
+		stock handler would be.
+
+		This does mean if you use ROM routines they will break,
+		so the code also copies the $D000-$F000 ROM into the
+		language card too.  If your code doesn't use ROM routines
+		you can skip this.  The ROM copy hack uses $400 (text page 1)
+		as a temporary buffer for the copy, feel free to use something
+		else if that's a problem.
+
+		Finally we patch out loading the A register from $45 at
+		the end of the IRQ handler.
+		Older Apple IIs needed to do this, but on a IIc this
+		will break things.
+
+
+Notes on Using on a IIgs
+~~~~~~~~~~~~~~~~~~~~~~~~
+I have not tested this on a IIgs with Mockingboard, I'm guessing it probably
+doesn't work.
+
+
+Cycle-counted version (not finished):
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 I started work on a cycle-counted (deterministic cycle count) pt3
 decoder, but it turned out to be large and complex enough to not be
@@ -100,3 +138,4 @@ The player also uses 26 zero-page locations.  More compact/faster code
 can be generated if you're willing to sacrifice 128+ zero page locations.
 
 
+
diff --git a/music/pt3_lib/empty.dsk b/music/pt3_lib/empty.dsk
deleted file mode 100644
index 0a2af35e..00000000
Binary files a/music/pt3_lib/empty.dsk and /dev/null differ
diff --git a/music/pt3_lib/hello.bas b/music/pt3_lib/hello.bas
index 744fa7b2..be32c545 100644
--- a/music/pt3_lib/hello.bas
+++ b/music/pt3_lib/hello.bas
@@ -1,2 +1,2 @@
-  10  PRINT "PT3 LIB TEST V0.2"
+  10  PRINT "PT3 LIB TEST V0.3"
  100  PRINT  CHR$ (4)"BRUN PT3_TEST"
diff --git a/music/pt3_lib/pt3_lib_mockingboard_detect.s b/music/pt3_lib/pt3_lib_mockingboard_detect.s
index 706d9407..925be47f 100644
--- a/music/pt3_lib/pt3_lib_mockingboard_detect.s
+++ b/music/pt3_lib/pt3_lib_mockingboard_detect.s
@@ -33,6 +33,24 @@
 ;------------------------------------------------------------------------------
 
 mockingboard_detect:
+
+	; activate IIc mockingboard?
+	; this might only be necessary to allow detection
+	; I get the impression the Mockingboard 4c activates
+	; when you access any of the 6522 ports in Slot 4
+
+	lda	APPLEII_MODEL
+	cmp	#'C'
+	bne	not_iic
+
+	lda	#$ff
+
+	; don't bother patching these, IIc mockingboard always slot 4?
+
+        sta	MOCK_6522_DDRA1
+	sta	MOCK_6522_T1CL
+
+not_iic:
 	lda	#$00
 	sta	MB_ADDR_L
 	ldx	#$C7			; start at slot #7
diff --git a/music/pt3_lib/pt3_lib_mockingboard_setup.s b/music/pt3_lib/pt3_lib_mockingboard_setup.s
index 9c7a6e1c..ff563546 100644
--- a/music/pt3_lib/pt3_lib_mockingboard_setup.s
+++ b/music/pt3_lib/pt3_lib_mockingboard_setup.s
@@ -170,47 +170,54 @@ clear_ay_end:
 	;=============================
 mockingboard_setup_interrupt:
 
-	;===========================
-	; Check for Apple IIc
-	;===========================
-	; it does interrupts differently
-
-	lda	$FBB3           ; IIe and newer is $06
-	cmp	#6
-	beq	apple_iie_or_newer
-
-	jmp	done_apple_detect
-apple_iie_or_newer:
-	lda	$FBC0		; 0 on a IIc
-	bne	done_apple_detect
-apple_iic:
-	; activate IIc mockingboard?
-	; this might only be necessary to allow detection
-	; I get the impression the Mockingboard 4c activates
-	; when you access any of the 6522 ports in Slot 4
-	lda	#$ff
-
-	; don't bother patching these, IIc mockingboard always slot 4?
-
-	sta	MOCK_6522_DDRA1
-	sta	MOCK_6522_T1CL
+	lda	APPLEII_MODEL
+	cmp	#'C'
+	bne	done_iic_hack
 
 	; bypass the firmware interrupt handler
 	; should we do this on IIe too? probably faster
 
+	; first we have to copy the ROM to the language card
+
 	sei				; disable interrupts
-	lda	$c08b			; disable ROM (enable language card)
-	lda	$c08b
+
+
+
+copy_rom_loop:
+	lda	$c089			; read ROM, write RAM1
+	lda	$c089
+
+	ldy	#0
+read_rom_loop:
+	lda	$D000,Y
+	sta	$400,Y			; note this uses text page as
+					; temporary data store
+	iny
+	bne	read_rom_loop
+
+	lda	$c08B			; read/write RAM1
+	lda	$c08B			;
+
+write_rom_loop:
+	lda	$400,Y
+	sta	$D000,Y
+	iny
+	bne	write_rom_loop
+
+	inc	read_rom_loop+2
+	inc	write_rom_loop+5
+	bne	copy_rom_loop
+
 	lda	#<interrupt_handler
 	sta	$fffe
 	lda	#>interrupt_handler
 	sta	$ffff
 
-	lda	#$EA			; nop out the "lda $45" in the irq hand
+	lda	#$EA			; nop out the "lda $45" in the irq handler
 	sta	interrupt_smc
 	sta	interrupt_smc+1
 
-done_apple_detect:
+done_iic_hack:
 
 
 	;=========================
@@ -228,10 +235,16 @@ done_apple_detect:
 	; Enable 50Hz clock on 6522
 	;============================
 
-	; 4fe7 / 1e6 = .020s, 50Hz
 
-	; 9c40 / 1e6 = .040s, 25Hz
-	; 411a / 1e6 = .016s, 60Hz
+	; Note, on Apple II the clock isn't 1MHz but is actually closer to
+	;       roughly 1.023MHz, and every 65th clock is stretched (it's complicated)
+
+	; 4fe7 / 1.023e6 = .020s, 50Hz
+	; 9c40 / 1.023e6 = .040s, 25Hz
+	; 411a / 1.023e6 = .016s, 60Hz
+
+	; French Touch uses
+	; 4e20 / 1.000e6 = .020s, 50Hz, which assumes 1MHz clock freq
 
 	sei			; disable interrupts just in case
 
@@ -249,9 +262,11 @@ setup_irq_smc4:
 	sta	MOCK_6522_IER	; IER: 1100, enable timer one interrupt
 
 	lda	#$E7
+;	lda	#$20
 setup_irq_smc5:
 	sta	MOCK_6522_T1CL	; write into low-order latch
 	lda	#$4f
+;	lda	#$4E
 setup_irq_smc6:
 	sta	MOCK_6522_T1CH	; write into high-order latch,
 				; load both values into counter
diff --git a/music/pt3_lib/pt3_test.s b/music/pt3_lib/pt3_test.s
index 91d69c0b..11bac7b9 100644
--- a/music/pt3_lib/pt3_test.s
+++ b/music/pt3_lib/pt3_test.s
@@ -36,6 +36,15 @@ pt3_setup:
 ;	lda	#1
 	sta	LOOP		; change to 1 to loop forever
 
+
+	;=======================
+	; Detect Apple II Model
+	;========================
+	; IRQ setup is different on IIc
+	; You can possibly skip this if you only care about II+/IIe
+
+	jsr	detect_appleii_model
+
 	;=======================
 	; Detect mockingboard
 	;========================
@@ -124,6 +133,21 @@ forever_loop:
 	;	as we disable ROM (COUT won't work?)
 
 print_mockingboard_detect:
+	lda	APPLEII_MODEL
+	sta	apple_message+17
+
+	; print detection message for Apple II type
+	ldy	#0
+print_apple_message:
+	lda	apple_message,Y		; load loading message
+	beq	done_apple_message
+	ora	#$80
+	jsr	COUT
+	iny
+	jmp	print_apple_message
+done_apple_message:
+	jsr	CROUT1
+
 
 	; print detection message
 	ldy	#0
@@ -168,6 +192,8 @@ done_found_message:
 ;=========
 ; strings
 ;=========
+apple_message:		.asciiz "DETECTED APPLE II  "
+
 mocking_message:	.asciiz "LOOKING FOR MOCKINGBOARD: "
 not_message:		.byte "NOT "
 found_message:		.asciiz "FOUND SLOT#4"
@@ -182,6 +208,7 @@ found_message:		.asciiz "FOUND SLOT#4"
 ;routines
 ;=========
 
+.include	"pt3_lib_detect_model.s"
 .include	"pt3_lib_core.s"
 .include	"pt3_lib_init.s"
 .include	"pt3_lib_mockingboard_setup.s"
diff --git a/music/pt3_lib/zp.inc b/music/pt3_lib/zp.inc
index 52ff3fb8..d3f6351d 100644
--- a/music/pt3_lib/zp.inc
+++ b/music/pt3_lib/zp.inc
@@ -12,6 +12,7 @@ MB_VALUE	= $67
 DONE_PLAYING	= $68
 DONE_SONG	= $69
 PT3_TEMP	= $6A
+APPLEII_MODEL	= $6B
 
 AY_REGISTERS	= $70
 A_FINE_TONE	= $70