INT 10,9 - Write Character and Attribute at Cursor Position
AH = 09
AL = ASCII character to write
BH = display page (or mode 13h, background pixel value)
BL = character attribute (text) foreground color (graphics)
CX = count of characters to write (CX >= 1)
returns nothing
- does not move the cursor
- in graphics mode (except mode 13h), if BL bit 7=1 then
value of BL is XOR'ed with the background color
INT 10,A - Write Character Only at Current Cursor Position
AH = 0A
AL = ASCII character to write
BH = display page (or mode 13h, background pixel value)
BL = foreground color (graphics mode only)
CX = count of characters to write (CX >= 1)
return nothing
- similar to INT 10,9 except color ignored in text modes