INT 50 - Vanderaart TEXT WINDOWS - OUTPUT LINE TO WINDOW AX = 0003h ES:BX -> text string CX = string length (0000h if ASCIZA NUL-terminated ASCII string. The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h. Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. string) DL = position (FFh centered, else flush left) DH = starting row DI = window handle Return: AX = status 0000h successful FFFFh did not fit in window