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Article #24375RE: DCD and RI detection
From: K538915
Date: Sat, 10 Jan 1987 19:08
Date: Sat, 10 Jan 1987 19:08
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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
Technical Details
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!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