Video BIOS Static Functionality Table (EGA/VGA)

¦7¦6¦5¦4¦3¦2¦1¦0¦ Video modes supported, byte at offset 00

¦ ¦ ¦ ¦ ¦ ¦ ¦ +--- 1 = mode 0

¦ ¦ ¦ ¦ ¦ ¦ +---- 1 = mode 1

¦ ¦ ¦ ¦ ¦ +----- 1 = mode 2

¦ ¦ ¦ ¦ +------ 1 = mode 3

¦ ¦ ¦ +------- 1 = mode 4

¦ ¦ +-------- 1 = mode 5

¦ +--------- 1 = mode 6

+---------- 1 = mode 7

¦7¦6¦5¦4¦3¦2¦1¦0¦ Video modes supported, byte at offset 01

¦ ¦ ¦ ¦ ¦ ¦ ¦ +--- 1 = mode 8

¦ ¦ ¦ ¦ ¦ ¦ +---- 1 = mode 9

¦ ¦ ¦ ¦ ¦ +----- 1 = mode A

¦ ¦ ¦ ¦ +------ 1 = mode B

¦ ¦ ¦ +------- 1 = mode C

¦ ¦ +-------- 1 = mode D

¦ +--------- 1 = mode E

+---------- 1 = mode F

¦7¦6¦5¦4¦3¦2¦1¦0¦ Video modes supported, byte at offset 02

¦ ¦ ¦ ¦ ¦ ¦ ¦ +--- 1 = mode 10

¦ ¦ ¦ ¦ ¦ ¦ +---- 1 = mode 11

¦ ¦ ¦ ¦ ¦ +----- 1 = mode 12

¦ ¦ ¦ ¦ +------ 1 = mode 13

+------------- reserved

03 dword reserved

07 byte scan lines supported in text modes

¦7¦6¦5¦4¦3¦2¦1¦0¦ Scan lines supported, byte at offset 07

¦ ¦ ¦ ¦ ¦ ¦ ¦ +--- 1 = 200 lines

¦ ¦ ¦ ¦ ¦ ¦ +---- 1 = 350 lines

+--------------- 1 = 400 lines

08 byte max number of displayable text character sets

09 byte # of text definition tables in char generator RAM

0A byte other capability flags

¦7¦6¦5¦4¦3¦2¦1¦0¦ Other flags, byte at offset 0A

¦ ¦ ¦ ¦ ¦ ¦ ¦ +--- 1 = all modes (0 on MCGA)

¦ ¦ ¦ ¦ ¦ ¦ +---- 1 = gray scale summing

¦ ¦ ¦ ¦ ¦ +----- 1 = character set loading

¦ ¦ ¦ ¦ +------ 1 = default palette loading

¦ ¦ ¦ +------- 1 = cursor emulation

¦ ¦ +-------- 1 = 64 color palette

¦ +--------- 1 = video DAC loading

+---------- 1 = DAC controlled by ACCS

0B byte other capability flags

¦7¦6¦5¦4¦3¦2¦1¦0¦ Other flags, byte at offset 0B

¦ ¦ ¦ ¦ ¦ ¦ ¦ +--- 1 = light pen support

¦ ¦ ¦ ¦ ¦ ¦ +---- 1 = save/restore video state

¦ ¦ ¦ ¦ ¦ +----- 1 = blinking/background intensity

¦ ¦ ¦ ¦ +------ 1 = display combination code

+------------- reserved

0C word reserved

0E byte save area capabilities

¦7¦6¦5¦4¦3¦2¦1¦0¦ save area capabilities at offset 0E

¦ ¦ ¦ ¦ ¦ ¦ ¦ +---- 1 = multiple text character sets

¦ ¦ ¦ ¦ ¦ ¦ +----- 1 = dynamic save area

¦ ¦ ¦ ¦ ¦ +------ 1 = text character set override

¦ ¦ ¦ ¦ +------- 1 = graphics character set override

¦ ¦ ¦ +-------- 1 = palette override

¦ ¦ +--------- 1 = display combination code extension

+------------ reserved

0F byte reserved


Zurück zum Interrupt Info. Roger Morgan / 1998 L.Änderung 29.03.99