Dave, I normally use the 73A/74A at 9600 (BRGH=0) with an 8Mhz crystal that provides better accuracy. Some folks here have used the chips with BRGH=1 despite the warning. You might consider the 16C76 which has the BRGH bug fixed as well as additional data and program memory. - Tom At 09:54 PM 9/4/97 +1000, you wrote: >The Microchip pdf for the 16c73a advises against running async comms >with BRGH=1 as it may be unreliable. I want to use the '73a with a >4Mhz clock at 9600 Baud. Acording to table 12-4 this isn't possible >and table 12-5 doesn't recommend it ! Am I missing something ? >The 1995/1996 databook doesn't contain any such warnings !!?? > >I looked for an answer in a couple of Pic FAQ areas but found nothing. >BTW, where is the best place to search for specific Pic topics ? >Thanks guys... > >______________________________________ >Dave Duffy, Audio Visual Devices >8/9-11 Trade Street >Cleveland Qld 4163, Australia >Ph: +61 7 38210362 Fax: +61 7 38210281 >E-mail: AVD@mailbox.uq.edu.au >______________________________________