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From: chamoun@lownlab.harvard.edu (Nassib Chamoun)
Newsgroups: comp.sys.ibm.pc
Subject: PC's serial port
Message-ID: <2247@husc6.UUCP>
Date: Tue, 9-Jun-87 14:18:59 EDT
Article-I.D.: husc6.2247
Posted: Tue Jun  9 14:18:59 1987
Date-Received: Fri, 12-Jun-87 03:45:27 EDT
Sender: news@husc6.UUCP
Lines: 14
Keywords: UART serial port baud rate transfer 8250


On the 8088 PC the 8250 UART (serial port) uses a clock input of 1.8432 MHZ,
when divided by 16 will yield to the maximum transfer rate of 115,200 bits per
second.  Can someone tell me if the 8250 on 286 and 386 machines uses higher
clock rates.  If so will it allow for faster transfer rates.  If not is
there a way of transferring data at higher serial rates ?  any boards
available ?  software or hardware gimmicks to alter 8250's input clock rate ?

Many thanks in advance.

NAME:	Nassib G. Chamoun                USPS:   Lown Cardiovascular Laboratory
USENET:	...!harvard!lownlab!chamoun              Harvard School of Public Health
PHONE:	+1 617 732 1307                          665 Huntington Avenue
                                                 Boston, MA 02115-9915