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Copyright 1991 David Jurgens |
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
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| Esc or Alt-X to exit |
int 10,11 |
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