AH = 0Ah: Write Character at Cursor Position

This function writes a character to the current cursor location, but leaves the attribute byte at that location unchanged. The function is otherwise identical to function 09h (Write Character and Attribute at Cursor Position).

• Input: AH = 0Ah
  AL = Character to write.
  BH = Page number (must be 0 for alpha mode; not used in graphics mode)
  CX = Number of characters to write
  

• Output: None
• Error conditions: None
• Registers modified: None