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Format of VESA EDID record

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Offset Size Description

00h

8 BYTEs

padding (all FFh, or 00h FFh..FFh 00h)

08h

WORD

big-endian manufacturer ID (see #00136)
bits 14 - 10 first letter (01h='A', 02h='B', etc.)
bits 9 - 5 second letter
bits 4 - 0 third letter

0Ah

WORD

EDID ID code -- identifies monitor model

0Ch

DWORD

serial number or FFFFFFFFh
for "MAG", subtract 7000000 to get actual serial number
for "OQI", subtract 456150000
for "PHL", subtract ???
for "VSC", subtract 640000000

10h

BYTE

week number of manufacture

11h

BYTE

manufacture year - 1990

12h

BYTE

EDID version

13h

BYTE

EDID revision

14h

BYTE

video input type (see #00129)

15h

BYTE

maximum horizontal size in cm

16h

BYTE

maximum vertical size in cm

17h

BYTE

gamma factor (gamma = 1.0 + factor/100, so max = 3.55)

18h

BYTE

DPMS flags (see #00128)

19h

BYTE

chroma information: green X'/Y' and red X'/Y'

1Ah

BYTE

chroma information: white X'/Y' and blue X'/Y'

1Bh

BYTE

chroma information: red Y

1Ch

BYTE

chroma information: red X

1Dh

BYTE

chroma information: green Y

1Eh

BYTE

chroma information: green X

1Fh

BYTE

chroma information: blue Y

20h

BYTE

chroma information: blue X

21h

BYTE

chroma information: white Y

22h

BYTE

chroma information: white X

23h

BYTE

established timings 1 (see #00130)

24h

BYTE

established timings 2 (see #00131)

25h

BYTE

manufacturer's reserved timing or 00h for none
bit 7: 1152x870 @ 75 Hz (Mac II, Apple)

26h

8 WORDs

standard timing identification
resolution (low byte) and vertical frequency (high byte) for each of eight modes (see #00132)
X resolution = (lowbyte + 31) * 8

36h

18 BYTEs

detailed timing description #1 (see #00133) (v1.1) alternately, text identification (see #00135)

48h

18 BYTEs

detailed timing description #2(v1.1) alternately, text identification (see #00135) (v1.1) alternately, text identification (see #00135)

5Ah

18 BYTEs

detailed timing description #3(v1.1) alternately, text identification (see #00135) (v1.1) alternately, text identification (see #00135)

6Ch

18 BYTEs

detailed timing description #4(v1.1) alternately, text identification (see #00135) (v1.1) alternately, text identification (see #00135) 7Eh BYTE unused???

7Eh

BYTE

unused???

7Fh

BYTE

checksum (radix-complement: 256-low byte of 16-bit sum of 00h-7Eh)