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Format of XGA DMQS buffer

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Offset Size Description

00h

WORD

offset (in bytes) to DMQS data for next XGA instance

02h

BYTE

slot number
03h BYTE XGA implementation function level identifier

04h

BYTE

XGA implementation resolution level identifier

05h

WORD

vendor identifier - identifies card vendor

07h

WORD

vendor defined field

09h

WORD

XGA adapter I/O register base address

0Bh

WORD

XGA coprocessor register base address (paragraph--multiply by 10h to get physical address)

0Dh

WORD

1 Megabyte system video memory aperture 0000h if not allocated

0Fh

WORD

4 Megabyte system video memory aperture 0000h if not allocated (multiply by 100000h to get physical address)

11h

WORD

video memory base address (multiply by 100000h to get physical address)

13h

WORD

composite ID of the attached display

15h

BYTE

amount of video memory available, in multiples of 256K bytes

16h

DWORD

alternate XGA coprocessor register base address. 0 = none.

1Ah

var

DMQS Data for further XGA Instances (as above)

Note:

"Instances" refers to the capability of having up to 8 XGA adapters in one computer.

See Also:

#00061