Specifications

99
AX= 1019h read screen mask
BL = screen mask
AX= 101Ah read current video DAC color page
BL = 0: read page mode:
BH = 0: 4 blocks out of 64
BH = 1: 16 blocks out of 16
BL = 1: read color page
BH = color page
AX= 101Bh convert color values into shades of gray
BX = number of first palette register
CX = number of registers
AX = 1100h load user defined character set for text mode
ES:BP = address of character set
CX = number of characters to load
DX = character offset in second block
BL = block to load into map 2
DH = number of bytes per character
AX = 1101h load 8 x 14 monochrome ROM character set
BL = block to load
AX = 1102h load 8 x 8 (twin pixels) ROM character set
BL = block to load
AX = 1103h set parameters of block
BL = parameters of the block
AX = 1104h load 8 x 16 ROM character set
AX = 1110h load user defined character set for text mode
(see AX = 1100h)
AX = 1111h load 8 x 14 monochrome ROM character set
(see AX = 1101h)
AX = 1112h load 8 x 8 (twin pixels) ROM character set
(see AX = 1102h)
AX = 1113h set parameters for block
(see AX = 41103h)
AX = 1114h load 8 x 16 ROM character set
(see AX = 1104h)