Table des matières

INT 0x10 - 0x11 - Character Generator Routine (EGA/VGA)

Request/Call:

reg value
AH 0x11
AL see below

user character load

reg descr
AL 00
BH number of bytes per character
BL table in character generator RAM
CX count of characters in table
DX ASCII code of first character defined
ES:BP pointer to user table

ROM BIOS 8x14 monochrome set

reg descr
AL 01
BL table in character generator RAM

ROM BIOS 8x8 double dot

reg descr
AL 02
BL table in character generator RAM

set displayed definition table

reg descr
AL 03
BL value for character Map Select register (EGA,VGA)
character generator RAM table numbers (MCGA)

AL = 04 ROM BIOS 8x16 character set

reg descr
AL 04
BL table in character generator RAM

AL = 10 user specified character definition table

reg descr
AL 10
BH bytes per character (points)
BL table in character generator RAM
CX number of characters defined in table
DX ASCII code of first character defined
ES:BP pointer to user table

ROM BIOS 8x14 monochrome character set

reg descr
AL 11
BL table in character generator RAM

ROM 8x8 double dot character definitions

reg descr
AL 12
BL table in character generator RAM

AL = 14 ROM 8x16 double dot character definitions

reg descr
AL 14
BL table in character generator RAM

pointer to graphics character table for ~INT 1F~ (8x8)

reg descr
AL 20
ES:BP pointer to user table

user graphics character pointer at INT 43

reg descr
AL 21
BL row specifier
* 0 - user specified (DL = rows)
* 1 is 14 rows
* 2 is 25 rows
* 3 is 43 rows
CX bytes per character (points)
DL rows (when BL = 0)
ES:BP pointer to user table

ROM 8x14 character set

reg descr
AL 22
BL row specifier (see AL=21)
DL rows (when BL = 0)

ROM 8x8 double dot character set

reg descr
AL 23
BL row specifier (see AL=21)
DL rows (when BL = 0)

ROM 8x16 character set

reg descr
AL 24
BL row specifier (see AL=21)
DL rows (when BL = 0)

get current character generator information

reg descr
AL 30
BH information desired (see bellow)
BH descr
0 INT 1Fh pointer
1 INT 44h pointer
2 ROM 8×14 pointer
3 ROM 8×8 double dot pointer (base)
4 ROM 8×8 double dot pointer (top)
5 ROM 9×14 alpha alternate pointer
6 ROM 8×16 character table pointer
7 ROM 9×16 alternate character table pointer

Return:

reg descr
CX Bytes per character (points)
DL rows (less 1)
ES:BP pointer to table

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