Int 49 Fn 18  - Ti Professional Pc - Crt - Print Tty String                [V]

   AH = 18h
   CS:BX -> counted string (count byte with length followed by string)

Return: nothing

Notes: AH=00h,04h,05h,0Bh,0Ch,0Dh,0Fh are documented as NOPs
   the string must be located in the caller's code segment; any TSRs
     which want to hook INT 49 must check for this function and emulate
     it, because the BIOS retrieves the caller's CS from the stack

See Also: AH=01h,AH=02h,AH=0Eh