Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!casbah.acns.nwu.edu!nucsrl!telecom-request From: D1749@applelink.apple.com (Disini SW, Emmanuel Disini,PRT) Newsgroups: comp.dcom.telecom Subject: 16550 UART Compatibility With 16450 Message-ID: Date: 10 Mar 91 06:43:00 GMT Sender: news@casbah.acns.nwu.edu (Mr. News) Organization: TELECOM Digest Lines: 15 Approved: Telecom@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 191, Message 10 of 11 Originator: telecom@delta.eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu Nntp-Posting-Host: hub.eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu I don't really know if this is the right forum for this subject, but it seems to be the most appropriate place I can find. Does anyone know if the 16550 UART is pin-compatible with the 16450? I am losing serial data and am considering upgrading to the 16550 which have built in FIFOs. My guess is that DOS turns off interrupts when writing to the screen buffer (I have a CGA card on a 286 system), and so serial chars get lost (I am using a FOSSIL and the port is locked at 9600 baud). So far, no one around here seems to have a manual for these things (the 16450s and 16550s), so I'm really stumped right now. Any help - a quick yes (compatible) or no (incompatible) - is all I need! joel disini manila d1749@applelink.apple.com