Zoom Effect File

Zoom Effect Files (extension .ZD2) are effect files used in zoom patches (zptc). There is an Zoom effect allocation table like file that is used to describe all effects installed on a zoom device.

ZDLF header

Offset	Size (bytes)	Field	Purpose
0x0	4	id	'zdlf'
0x4	4	dataSize
0x8	4	CRC
0xC	4	gen	apears to be linked with firmware version, works like epoch field
0x10	8	supportRegion
0x18	64	Lvl	unknown
0x58	1	usedUnits	Number of cases used by this effect. A normal effect like compressor or reverb consumes 1 unit while a more complicated effect an amp will consume 2 units.
0x59	1	version	Effect file version example: 1.10
0x5D	2	reserved	reserved for future development
0x5F	1	categoryId	numeric id
0x60	4	typeId
0x64	11	typeName	effect name
0x6F	11	categoryName	category string id
0x7A	1	colorR	R component of effect coloured icon
0x7B	1	colorG	G component of effect coloured icon
0x7C	1	colorB	B component of effect coloured icon
0x80	4	iconId	"ICON"
0x84	4	iconSize	size of effect's icon
0x88	[iconSize]	iconData	binary encoded icon (bmp)

Japanese comment header

Offset	Size (bytes)	Field	Purpose
0x0	4	commentId	"TXJ1"
0x4	4	commentSize	length of comment string
0x8	[commentSize]	commentString	comment text

English comment header

Offset	Size (bytes)	Field	Purpose
0x0	4	commentId	"TXE1"
0x4	4	commentSize	lenght of comment string
0x8	[commentSize]	commentString	comment text

Info header Offset

Size (bytes)	Field	Purpose
0x0	4	infoId	"INFO"
0x4	4	infoSize

Data (ELF image) header

Offset	Size (bytes)	Field	Purpose
0x0	4	dataId	"DATA"
0x4	4	dataSize