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Bitfields for Compaq advanced video functionality

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Bit Description

31

future graphics extensions (reserved, set to 0)

30 - 16

reserved

15 - 12

available video memory in 256K blocks, less one (0000 = 256K, etc.)

11 - 8

reserved

7

QVision modes supported

6

Advanced VGA modes supported

5

Accelerated VGA modes supported

4

standard VGA modes supported

3 - 2

reserved

1

132-column modes supported

0

reserved