| Function No.: 00 h Function: sets the display mode.
Entry parameter: Ah = 00 h
Al = Display Mode
Display Mode list: Display Mode attributes
00 h 40 × 25 16-color text
01 H 40 × 25 16-color text
02 h 80 × 25 16-color text
04 H 320x200 4 colors
05 h 320x200 4 colors
06 h 640x200 2 colors
07 h 80 × 25 2-color text
08 h 160x200 16 colors
09 h 320x200 16 colors
0ah 640x200 4 colors
0bh Reserved
0ch Reserved
0dh 320x200 16 colors
0eh 640x200 16 colors
0fh 640x350 2 colors (monochrome)
10 h 640x350 4 colors
11 h 640x480 2 colors
12 h 640x480 16 colors
13 H 320x200 256 colors Feature No. 01 H Function: Set the cursor shape.
Entry parameter: Ah = 01 H
Ch four-bit lower = start line of the cursor
CL four-bit lower = the end line of the cursor
Exit parameter: None Function No.: 02 h Function: sets the cursor position in the text coordinate.
Entry parameter: Ah = 02 h
BH = display page number
DH = row (Y coordinate)
DL = column (x coordinate)
Exit parameter: None Function No.: 03 h Function: reads various information about the cursor in the text coordinate.
Entry parameter: Ah = 03 h
BH = display page number
Exit parameter: CH = start line of the cursor
CL = end line of the cursor
DH = row (Y coordinate)
DL = column (x coordinate) Function No.: 04 H Function: gets the current status and position of the optical pen.
Entry parameter: Ah = 04 H
Exit parameter: Ah = 00 h-the optical pen is not pressed/not triggered, 01 H-the optical pen has been pressed/triggered
BX = pixel column (Graphic X coordinate)
Ch = pixel line (x y coordinate, display mode: 04h ~ 06 h)
Cx = pixel line (x y coordinate, display mode: 0dh ~ 10 h)
DH = Character Line (Y coordinate of text)
DL = character column (Text X coordinate) Function No.: 05 h Function: sets the display page, that is, select the display page of the activity
Entry parameter: Ah = 05 h
Al = display page
For CGA, memory, mcga, and VGA, the following table lists the display pages:
Mode page number display type
00 h 01 H 0 ~ 7 CGA, middleware, mcga, VGA
02 h 03 H 0 ~ 3 CGA
02 h 03 H 0 ~ 7 Tib, mcga, VGA
07 h 0 ~ 7 Tib, VGA
0dh 0 ~ 7 Tib, VGA
0eh 0 ~ 3 Tib, VGA
0fh 0 ~ 1 Tib, VGA
10 H 0 ~ 1 Tib, VGA Function No.: 06h and 07 h Function: Initialize screen or scrolling
Entry parameters: Ah = 06 h-scroll up, 07 h-scroll down
Al = number of rows to scroll (0-clear window)
BH = default attribute of blank area
(CH, Cl) = position in the upper left corner of the window (Y coordinate, X coordinate)
(DH, DL) = position in the lower right corner of the window (Y coordinate, X coordinate)
Exit parameter: None Function No.: 08 h Function: Read the characters at the cursor and their attributes.
Entry parameter: Ah = 08 h
BH = display page number
Exit parameter: Ah = attribute
Al = character Function No.: 09 h Function: displays characters at the current cursor according to the specified attribute.
Entry parameter: Ah = 09 h
Al = character
BH = display page number
BL = attribute (text mode) or color (graphic mode)
Cx = number of repeated output characters
Exit parameter: None Function No.: 0ah Function: display characters at the current cursor according to the original attribute
Entry parameter: Ah = 0ah
Al = character
BH = display page number
BL = color (graphic mode, applicable only to pcjr)
Cx = number of repeated output characters
Exit parameter: None Function No.: 0bh Function: sets the color palette, background color, or border.
Entry parameter: Ah = 0bh
Set color: bH = 00 h, BL = color
Select the color palette: bH = 01 H, BL = color palette (320x200, 4 color graphics mode)
Exit parameter: None Function No.: 0ch Function: Write image pixels.
Entry parameter: Ah = 0ch
Al = pixel value
BH = page number
(CX, dx) = graphic coordinate column (x), row (y)
Exit parameter: None Function No.: 0dh Function Description: Read image pixels.
Entry parameter: Ah = 0dh
BH = page number
(CX, dx) = graphic coordinate column (x), row (y)
Exit parameter: Al = pixel value Function No.: 0eh Function: display characters in teletype mode.
Entry parameter: Ah = 0eh
Al = character
BH = page number
BL = foreground (graphic mode)
Exit parameter: None Function No.: 0fh Function: Read the display mode.
Entry parameter: Ah = 0fh
Exit parameter: Ah = number of screen characters
Al = display mode (see the description in function 00h)
BH = page number Function No.: 10 h Function Description: Color interruption. Its sub-functions are described as follows:
Function subfunction name function subfunction name
00 h set the palette register 01 H set the border color
02 h set the color palette and border 03 h trigger flashing/highlighted
07 h read palette register 08 h read border color
09 h read the color palette and border 10 h set the color register
12 h set color register Block 13 H set color Page Status
15 h read color register 17 H read color register Block
1ah read color page status 1bh set grayscale Value
Function No.: 11 h Function: The font is interrupted. Its sub-functions are described as follows:
Sub-function number sub-function name
00 h loading user fonts and Programmable Controllers
10 h loading user fonts and Programmable Controllers
01 H loaded 8x14 Rom font and Programmable Controller
11 h loaded 8x14 Rom font and Programmable Controller
02 h loaded 8x8 Rom font and Programmable Controller
12 h loaded 8x8 Rom font and Programmable Controller
03 h set block indicator
04 H loaded 8x16 Rom font and Programmable Controller
14 h loaded 8x16 Rom font and Programmable Controller
20 h set int 1fh font pointer
21 h: Set int 43 h for the user's font
22 h: Set int 43 h for the 8x14 Rom font
Set int 43 H for 8x8 Rom font for 23 h
24 h: Set the int 43 h for the 8x16 Rom font
30 h read font information
Function No.: 12 h Function: the configuration of the monitor is interrupted. Its sub-functions are described as follows:
Function No. Function Name
10 h read configuration information
20 h Screen Printing
30 h set scan row
31 H allow/disable loading the default palette
32 h allow/disable display
33 H gray sum allowed/disabled
34 h allow/disable cursor Simulation
35 h switch activity display
36 h enable/disable screen refresh Function No.: 13 H Function: Display strings in teletype mode.
Entry parameter: Ah = 13 H
BH = page number
BL = attribute (if Al = 00h or 01 H)
Cx = display String Length
(DH, DL) = coordinates (rows, columns)
ES: BP = display string address Al = display output mode
0-the string contains only the display characters, and its display attribute is in Bl. The cursor position remains unchanged after display
1-The string contains only the display characters, and its display attribute is in Bl. The cursor position changes after the display
2-The string contains the display characters and display attributes. The cursor position remains unchanged after display
3-The string contains the display characters and display attributes. The cursor position changes after the display
Exit parameter: None Function No.: 1ah Function: Read/set and display the combined encoding, which is only valid for PS/2. Function No.: 1bh Function: Read the function/status information, which is only valid for PS/2. Function No.: 1ch Function: Save/restore the display status. valid only for PS/2. Graphic mode: The format of the color attribute in BH is as follows:
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7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
Description |
BL |
R |
G |
B |
I |
R |
G |
B |
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Flashing |
Red |
Green |
Blue |
Highlight |
Red |
Green |
Blue |
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Background |
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Prospect |
Example |
1 |
1 |
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1 |
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1 |
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