INT 0x10 - 0x10 - Write/Read Palette Register (EGA/VGA)
Request/Call:
reg
value
descr
AH
0x10
AL
var.
sub function
Sub Function
AL
Descr
00
set individual palette register
01
set border color (overscan register)
02
set all palette registers and border
03
toggle intensity/blinking (EGA)
07
read palette register (PS/2)
08
read border color (overscan register, PS/2)
09
read palette registers and border (PS/2)
10
set DAC color register
12
set block of DAC color registers
13
set attribute controller color select state
15
read DAC color register (PS/2)
17
read block of DAC color registers
18
update video DAC mask register
19
read video DAC mask register
1A
read color page state
1B
sum color values to shades of gray
AL : 00 set individual palette register
BH
color value
BL
palette register
AL : 01 set border color (overscan register)
BH
color value
AL : 02 set all palette registers and border
ES:DX
pointer to 17 byte table representing 16 palette registers and border color register
BL
0 enable intensity
1 enable blinking
AL : 07 read palette register (PS/2)
BL
palette register to read (0-15)
on return:
BH
value of palette register
AL : 08 read border color (overscan register, PS/2)
on return:
BH
value of border color (overscan register)
ES:DX
pointer to 17 byte table representing 16 palette registers and border color register
on return:
ES:DX
pointer to table provided as input
AL : 10 set DAC color register
BX
color register to set
CH
green value
CL
blue value
DH
red value
AL : 12 set block of DAC color registers
BX
first color register to set
CX
number of color registers to set
ES:DX
pointer to table of color values to set
AL : 13 set attribute controller color select state
BL
0 set Mode Control register bit 7
BH = value for bit 7
BL
1 set color select register
BH = value for color select register
AL : 15 read DAC color register (PS/2)
BX
color register to read
on return:
CH
green value
CL
blue value
DH
red value
AL : 17 read block of DAC color registers
BX
first color register to read
CX
number of color registers to read
ES:DX
pointer to buffer for color registers
on return:
ES:DX
pointer to color table provided as input
AL : 18 update video DAC mask register
BL
new mask
AL : 19 read video DAC mask register
on return:
BL
value read from video DAC mask register
AL : 1A read color page state
BL
bit 7 of Mode Control Register
BH
bits 2 thru 3 of Color select register if BL = 0
bits 0 thru 3 of Color select register if BL = 1
on return:
BL
current paging mode
CX
current page
AL : 1B sum color values to shades of gray
BX
first color register to sum
CX
number of color registers to sum
Return
nothing
Notes & Comments
all characters are displayed, including CR, LF, and BS
replication count in CX may produce an unpredictable result in graphics modes if it is greater than the number of positions remaining in the current row
