DGT2 data format

■ File layout

offset	size	function
$ 00	word	identifier
$ 02	$ 04	Image size
$ 06	variable	CLUT (exists if necessary)
variable	variable	Bitmap data

◆ Identifier

"PP"	Palette mode 256 colors / 32768 colors
"DC"	RGB mode 32768 colors
"RL"	Run-length mode 256 colors / 32768 colors
"FP"	Palette mode 256 colors / approx. 16.77 million colors
"FC"	RGB mode about 16.77 million colors
"pp"	Palette mode 16 colors / 32768 colors
"fp"	Palette mode 16 colors / approx. 16.77 million colors

◆ Image size

offset	size	Explanation
$ 00	word	H image size
$ 02	word	V image size

◆ CLUT

Exists in palette mode and run length mode.

offset	size	function
$ 00	Word or long x number of pallets (16 or 256)	CLUT data

● In "PP" / "RL" mode, the number of pallets = 256 In "pp" mode, the number of pallets = 16

MSB color data LSB
│ │ Blue │ Green │ Red │
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│ * │ 4 │ 3 │ 2 │ 1 │ 0 │ 4 │ 3 │ 2 │ 1 │ 0 │ 4 │ 3 │ 2 │ 1 │ 0 │
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘

● In "FP" mode, the number of pallets = 256 In "fp" mode, the number of pallets = 16

MSB │ Color Code │ │ Blue │
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│ * │-│-│-│-│-│-│-│ 7│6│5│4│3│2│1│0│
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
　
LSB
│ Green │ Red │
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│ 7 │ 6 │ 5 │ 4 │ 3 │ 2 │ 1 │ 0 │ 7 │ 6 │ 5 │ 4 │ 3 │ 2 │ 1 │ 0 │
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘

* = Can be set freely (normally = 1b)

◆ Bitmap data

offset	size	function
$ 00 ~	variable	Bitmap data

● In "PP" / "FP" mode: 8bit / dot

MSB LSB
│ Palette code │
┌─┬─┬─┬─┬─┬─┬─┬─┐
│ 7 │ 6 │ 5 │ 4 │ 3 │ 2 │ 1 │ 0 │
└─┴─┴─┴─┴─┴─┴─┴─┘

● In "DC" mode: 16bit / dot

MSB color data LSB
│ │ Blue │ Green │ Red │
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│ * │ 4 │ 3 │ 2 │ 1 │ 0 │ 4 │ 3 │ 2 │ 1 │ 0 │ 4 │ 3 │ 2 │ 1 │ 0 │
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘

* = Can be set freely (normally = 1b)

● In "FC" mode: 32bit / dot

MSB │ Color Code │ │ Blue │
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│ * │-│-│-│-│-│-│-│ 7│6│5│4│3│2│1│0│
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
　
LSB
│ Green │ Red │
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│ 7 │ 6 │ 5 │ 4 │ 3 │ 2 │ 1 │ 0 │ 7 │ 6 │ 5 │ 4 │ 3 │ 2 │ 1 │ 0 │
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘

* = Can be set freely (normally = 1b)

● In "pp" / "fp" mode: 4bit / dot

MSB LSB
│ Even coordinate code │ Odd coordinate code │
┌─┬─┬─┬─┬─┬─┬─┬─┐
│ 3 │ 2 │ 1 │ 0 │ 3 │ 2 │ 1 │ 0 │
└─┴─┴─┴─┴─┴─┴─┴─┘

● In "RL" mode:


MSB LSB
│ Continuous length │ CLUT index number │
┌─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
│ 7 │ 6 │ 5 │ 4 │ 3 │ 2 │ 1 │ 0 │ 7 │ 6 │ 5 │ 4 │ 3 │ 2 │ 1 │ 0 │
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘

★ Graphic Tools Guide ★ Format list