Path: utzoo!mnetor!uunet!husc6!necntc!encore!paradis
From: paradis@encore.UUCP (Jim Paradis)
Newsgroups: comp.os.minix
Subject: Re: Problems with Jim Paradis' tty driver
Message-ID: <2502@encore.UUCP>
Date: 17 Jan 88 17:50:20 GMT
References: <1828@botter.cs.vu.nl> <1509@ea.ecn.purdue.edu>
Reply-To: paradis@encore.UUCP (Jim Paradis)
Organization: The Whizzo Chocolate Company
Lines: 22

In article <1509@ea.ecn.purdue.edu> housel@ea.ecn.purdue.edu.UUCP (Peter S. Housel) writes:
>
>	I haven't had such good luck with the driver itself. Running
>the "t.c" program, and configuring rs232.c to work at 1200 baud, it misses
>about three of every five characters.

Did you read the section of the "README" file on the subject of handling
additional characters on an interrupt?  I don't know what kind of machine
you're running, but you might want to get rid of the "<< 1" in the latency
calculation.  Alternately, you might try tweaking MAX_CHARS_PER_INT up or
down.  Basically, if you wait too long to try and get the next character,
you might wind up missing some... and three out of five sounds about
right for that.

Let me know if this helps...

   +----------------+  Jim Paradis                  linus--+
+--+-------------+  |  Encore Computer Corp.       necntc--|
|  | E N C O R E |  |  257 Cedar Hill St.           ihnp4--+-encore!paradis
|  +-------------+--+  Marlboro MA 01752           decvax--|
+----------------+     (617) 460-0500             talcott--+
...coated with sesame seeds, and garnished with lark's vomit!