INT 10,11 - Character Generator Routine (EGA/VGA)

AH = 11h

% AL = 00 user character load

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

% AL = 01 ROM BIOS 8x14 monochrome set

BL = table in character generator RAM

% AL = 02 ROM BIOS 8x8 double dot

BL = table in character generator RAM

% AL = 03 set displayed definition table

BL = value for character Map Select register (EGA,VGA)

= character generator RAM table numbers (MCGA)

% AL = 04 ROM BIOS 8x16 character set

BL = table in character generator RAM

% AL = 10 user specified character definition table

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

% AL = 11 ROM BIOS 8x14 monochrome character set

BL = table in character generator RAM

% AL = 12 ROM 8x8 double dot character definitions

BL = table in character generator RAM

% AL = 14 ROM 8x16 double dot character definitions

BL = table in character generator RAM

% AL = 20 pointer to graphics character table for ~INT 1F~ (8x8)

ES:BP = pointer to user table

% AL = 21 user graphics character pointer at INT 43

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

% AL = 22 ROM 8x14 character set

BL = number of rows (see AL=21)

DL = rows (when BL = 0)

% AL = 23 ROM 8x8 double dot character set

BL = row specifier (see AL=21)

DL = rows (when BL = 0)

% AL = 24 ROM 8x16 character set

BL = row specifier (see AL=21)

DL = rows (when BL = 0)

% AL = 30 get current character generator information

BH = information desired:

= 0 ~INT 1F~ pointer

= 1 INT 44h pointer

= 2 ROM 8x14 pointer

= 3 ROM 8x8 double dot pointer (base)

= 4 ROM 8x8 double dot pointer (top)

= 5 ROM 9x14 alpha alternate pointer

= 6 ROM 8x16 character table pointer

= 7 ROM 9x16 alternate character table pointer

on return:

CX = bytes per character (points)

DL = rows (less 1)

ES:BP = pointer to table