INT 2F - DOS 3+ PRINT.COM - SUBMIT FILE FOR PRINTING
AX = 0101h
DS:DX -> submit packet (see below)
Return: CF clear if successful
AL = 01h added to queue
9Eh now printing
CF set on error
AX = error code (see also INT 21/AH=59h)
01h invalid function
02h file not found
03h path not found
04h out of file handles
05h access denied
08h print queue full
09h spooler busy
0Ch name too long
0Fh invalid drive

Format of submit packet:
Offset  Size    Description
00h    BYTE    level (must be 00h)
01h    DWORD   pointer to ASCIZ filename (no wildcards)

See also: 2F0102

2F0101 - DOS 3+ PRINT.COM - SUBMIT FILE FOR PRINTING