Cartridge
---------
$3fff-$3f00		cartridge bank filled flags (1 byte each)

RAM
---
$0000-$00c7		zeroed by exception (SWIx, Reset)
$0000-$100c		zeroed by exception (SWIx, Reset)

$00			counter related
$01			counter related
$02			counter related
$05			counter related
$07/$08			counter related
$09			counter related
$0a			counter related
$0b			counter related
$0c			counter related
$0f			counter related
$07/$08			counter maximum
$0d			floppy action:
				$80 delete file
				$08 format disk
				$02 load file
				$01 update old file
				$00 save new file
$0e/$0f			s stackpointer hook
$10/$11		$03C7 	table base (modified by $84AE, $8479)
$12			table counter ?
$13			table counter end value ?
$14/$15			panel interrupt handler
	$8766
	$878f
	$87fa
	$8898
	$89a0
	$89a8
$16			data from panel?
$17			number of bytes to transmit via MIDI (?)
$18/$19			MIDI send buffer vector
$1a/$1b			"not yet sent" MIDI buffer vector
$1c/$1d			MIDI rx-data processing hook
$1e			channel pressure value
$1f			MIDI timeout countoff
$20			last MIDI nibble received (sysex)
$22			last MIDI nibble received (sysex)
$24			outstanding MIDI bytes?
$25/$26			MIDI tx-data processing hook
$27/$28			MIDI vector
$29			length of MIDI command to transmit
$2c			(nibble/2 + $0bc6)
$2e			last MIDI byte received
$30/$31			address start pointer
$32			MIDI xmit checksum
$33/$34			address end pointer
$35			MIDI rxrdy timeout counter
$3b			display start address
$3d			
$3f			characters in display buffer
$37			stack base + 2?
$43			DUART ACR register value
$99			analog voltage compare value
$9A			analog voltage compare value
$9f			A/D conversion result
$a0			A/D conversion result
$a1			A/D conversion result
$a2			keycode storage
$a3			keycode storage
$a5			bit 7:	1=INTERNAL
$a6			edit song/step/seq/track variable
$a8			MIDI receive mode (cmd/data=$11)
			items to change (?)
			$a8 related menu function
$a9			parameter to change (0-9) (?)
			INT (0), CART a (1), CART b (2), SEQ (3)
$aa			sequencer mode (stop, play, odub, rec)
$ac			INC/DEC possible flag (?)
$af			edit/compare flag (?)
$b6			track to be modified
$b7			osc/dca/lfo/env
$b8			button for $b7
$ba
$bb
$bc			RAMCARD not usable:	$27
			RAMCARD present:	$4f
			RAMCARD usable:		$77
$be			quantization value
$c3
$c4
$c5/$c6  		source disk serial number
$c7
$c8			parameter max. value (?)
$cb			single sound pointer?
$cc			MIDI receive mode (sysex=00, normal)
$cd			BANK/SEQ page (0-3)
$ce			track stuff (prevent display position increase if $00)
			track menu
				0: mix
				1: MIDI channel
				2: status
				3: program num
$d1			active program (?)
$d2			edited program (?)
$d3/$d4		$0001
$d5/$d6			ramcard hook
			$0000:	RAMCARD not present
			$ff02:	RAMCARD inserted
$d7			A/D conversion
$da
$dc
$df			keyboard mode: local / MIDI / both (0-2) (?)
$e0
$e1
$e2
$e3			keyboard mode: local / MIDI / both (0-2) (?)
$e5			inport change stuff
$e6		$00
$e7		$00
$eb		$01
$ec		$64
$ed		$00
$f0
$f2			selected track
$f5		$80
$f6		$00
$f7		$0a
$f8		$ff
$fc		$18
$fd			edit song/step/track variable

$0100		$ff
$0111/$0112	$0000
$011b/$011c
$0121/$0122	$0000
$0123/$0124	$ffff
$0125/$0126	$ffff
$01c7-$0203	$ff	track status buffer
$0203-$0216	$ff	buffer (20 bytes)
$0217-$0282		buffer (organized as 6*18)
$028f/$0290
$0295/$0296	$ffff
$02a7/$02a8	$0000
$02c7/$02c8
$02ae		$00
$02d1		$00
$02d4-$0391	track table ($1b bytes per track) when track menu
$02d4/$02d5		($02d4-$02e0) address
$02d6/$02d7		vector?
$02d8
$02e0			count?
$02ef			track type (?)
$02f2
$0b96			CC storage?
$0b8b			SWI mode
$0b8c/$0b8d		ROMLOW switch value

table $03C7-$03CF (87 sets repeated to $0b47)
	$03C7	$03C7+k*8 k=1..87 MSB
	$03C8	$03C7+k*8 k=1..87 LSB
	$03C9	
	$03CA
	$03CB	
	$03CC
	$03CE
	$03CF
	$03D0	$00
	$03D1	$00
	$03D2
	$03D3
	$03D4
	$03D5
	$03D6

jump table $0B4f-$0b5d, 4 sets (0b5e-0b6c, 0b6d-0b7b, 0b7c-0b8b)
accessed by $84AE
	$0B4F
	$0B50
	$0B51	??		-> a, a AND #$FE ->
	$0B52	step (?)
	$0B53			-> D, Y ->	
	$0B54	parameter MSB	-> D, Y ->
	$0B55	parameter LSB	Y ->
	$0B56   -> X, Y ->	Y ->
	$0B57	-> X, Y ->	Y ->
	$0B58			Y ->
	$0B59
	$0B5A
	$0B5B
	$0B5C	destination address MSB
	$0B5D	destination address LSB

$0b4f-$0b8a	zeroed by exception
$0b8c/$0b8d	outport configuration ($640e/0f)
$0b96		CC storage
$0ba2		MIDI
$0ba5		MIDI
$0ba6-$0bc5	MIDI transmit buffer
$0bc6-$0be5	MIDI receive buffer (?)
$0be9/$0bea	hook
$0cb7-$0d06	display buffer (80 characters)
$0d07/$0d08	pointer to program edit buffer ($104a|$0d6a) (?)
$0d09/$0d0a	split / layer mode 
$0d0b/$0d0c	(stackpointer? table base?)
$0d11/$0d12	hook for soft button handlers
$0d15/$0d16	hook for indirect jump
$0d17/$0d18	text base for printing
$0d1b
$0d1c		track / programs screen buffer
$0d30-$0d95	single program buffer
$0d96-$0da9	table (20)
$0dac		hook for indirect jump
$0db6-$0dbb	A/D conversion results
$0dc7/$0dc8
$0dc7		floppy task (?) (offset for vector table)
$0dc8		number of item to access (bank#, SEQ#...)
$0dc9/$0dca	offset for disk position table
$0dcb		next head
$0dcc		actual head
$0dcd		next head
$0dce		floppy related (end head ?)
$0dcf		start track
$0dd0		start sector
$0dd1		end track
$0dd2		end sector
$0dd3/$0dd4	SEQRAM/DOSRAM transfer address pointer
$0dd5/$0dd6	end address for SEQRAM/DOSRAM transfer
$0dd7		transfer mode: SEQRAM/DOSRAM or DOSRAM/SEQRAM
$0dd8		floppy head (?)
$0dd9		floppy sector
$0dda/$0ddb	pointer to DOSRAM transfer area
$0ddc		number of tracks or sectors to transfer / retry counter
$0ddd
$0dde		floppy status
$0ddf		floppy command
$0de0/$0de1	stack register storage
$0de2		floppy error code
$0de5/$0de6	hook for indirect jump
$0de7		floppy track
$0de8/$0de9	address storage (DOSRAM pointer)
$0dea/$0deb	system stack pointer storage
$0fbd		System Stack (init value)
$0ffa/$0ffb	address pointer for sound bank copy (src)
$0ffc/$0ffd	address pointer for sound bank copy (dest)
$1006/$1007	last counter value
$100c-$100f
$1010-$1fff	sound bank in OSRAM
$4738-$4F38	floppy buffer
$5000-$5ff0	sound bank storage in DOSRAM (for floppy read/write)
$49c2		program file