Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!rutgers!ames!ucbcad!ucbvax!CZHRZU1A.BITNET!K538915 From: K538915@CZHRZU1A.BITNET Newsgroups: comp.sys.atari.st Subject: RE: DCD and RI detection Message-ID: <8701102327.AA22563@ucbvax.Berkeley.EDU> Date: Sat, 10-Jan-87 14:08:00 EST Article-I.D.: ucbvax.8701102327.AA22563 Posted: Sat Jan 10 14:08:00 1987 Date-Received: Sat, 10-Jan-87 23:46:34 EST Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 10 UniTerm detects Data Carrier Detect thru polling bit 1 of the MFP 68901 IO port (Address $FFFA01), RI (Ring Indicator) is bit 6 (starting with bit 0)..if you can think of something intelligent to do in a interrupt handler, you can enable the corresponding MFP interrupt. A resonable source for this kind of information (even if it does has errors) is the Data Becker / Abacus book ST Internals, one good reason to buy it (at least here) is the Bios/XBios listing in it...the latest edition has a lot of errors corrected and is updated for ROM TOS. Simon Poole