INT 10H 09H: Write Character/Attribute to Cursor Location
Expects: AH 09H
AL character to write (see ASCII Table)
Note: Graphics chars > 127 are defined in INT 1fH table.
BH video page number (0-based)
BL text modes: video attribute for character
graphics modes: color number
CX repeat count
Info: This writes a character and attribute to the current cursor
This is too slow for most apps. See Video Memory Layouts.
CX To write just one character, set CX=1.
You may use the fn to write a series of the same character--for
instance, to fill an entire screen line with blanks--by setting
CX to a repeat count.
Notes: This does not update the cursor position. Use INT 10H 0eH to
write a character and advance the cursor.
Use INT 10H 0aH to write a character without modifying the video
attributes of the affected screen positions.
See Also: INT 10H: Video Services