Function 4407h (68-7)    IOCTL: Get Output Status

Checks to see if the device or file is ready for output.

On entry:      AH         44h
AL         07h
BX         Device or file handle

(file)      AL         FFh     until EOF is reached
00h     after EOF is reached

   (device)    AL         FFh     If device ready
00h     If device not ready


This subfunction reports the onput status of the device or file. AL
returns FFh for ready and 00h for not ready (or end of file).

See also: 44h
See also: 4406h

4407h (68-7) IOCTL: Get Output Status