INT 7C - SK-UPPS Data Link Interface API - SYNC REQUEST BUFFER AX = 0012h DX = protocol ID (see #03849) Return: AX = completion code (see #03846) if AX=0000h: ES:BX -> Mbuf (see #03847) Note: If the protocol wants to be informed when an Mbuf becomes available, REQUEST BUFFER (AX=0004h) should be used instead. SeeAlso: AX=0004h,AX=0005h,AX=0006h,AX=0013h