INT 21 - European MS-DOS 4.0 - "PIPE" - CREATE A NEW PIPE AH = 93h CX = size in bytes Return: CF clear if successful AX = read handle BX = write handle CF set on error AX = error code (08h) (see #01680 at AH=59h/BX=0000h) Desc: create a communications channel which may be used for interprocess data and command exchanges SeeAlso: AH=3Ch,AH=3Fh"DOS",AH=40h"DOS",AH=84h