INT 0x10 - 0x0e - Write Text in TeleType Mode

Request/Call:

reg	value	descr
AH	0x0e
AL		ASCII character to write
BH		Page number (text mode)
BL		foreground pixel color (graphics modes)

Nothing

Cursor advances after write
characters BEL (0x07), BS (0x08), LF (0x0A), and CR (0x0D) are treated as control codes
for some older BIOS (10/19/81), the BH register must point to the currently displayed page
on CGA adapters this function can disable the video signal while performing the output which causes flitter.