I would invite you to do the math: 115,200 baud with one start bit, one
stop bit and eight data bits (total of 10) means the computer has to
pump out 11,520 bytes per second to the serial port. I think if a 386
at 25Mhz can handle a hard drive and move 700K bytes per second, it can
surely handle less that 12K, especially since the modem has a higher
priority interrupt than the hard drive.
George
>I don't really know if a 386 can keep up with a 28.8 modem or not, but I
>thought it might be worth mentioning that even though the modem-to-modem
>connection is only 28.8 kbps, the serial port connection between the modem
>and the computer needs to run at a higher rate, due mainly to hardware
>compression by the modem. I doubt a serial port can really keep up with a
>28.8 modem if it is running at anything less than 115,200 baud.
>
> Michael
>
>On Fri, 20 Mar 1998, Fred Whipple wrote:
>
>> What about a 386SX/16? I *know* we're reaching here, but I've had this
>> machine forever and wanted to do this very same thing, but have always
>> wondered if setting the darn thing up would be worth the time. One book I
>> read mentioned when comparing different processors said a 386SX/16 would have
>> considerable trouble keeping up with a full-speed serial device under MS-DOS,
>> but didn't mention something as slow (relative to the serial port's maximum
>> speed) as 28800. I wonder if the excess CPU used due to multitasking and
>> managing a whole (yet small) Linux system with IP Masquarading would eat the
>> CPU enough to challenge it to run a modem even at 28.8k.
>
>---------------------------------------------------------------------
>DISCLAIMER: All opinions expressed herein are my own and should not
>be construed to represent those of Washington University or any other
>organization.
>---------------------------------------------------------------------
>Michael P. Plezbert [EMAIL PROTECTED]
>Graduate Student http://www.cs.wustl.edu/~plezbert/
>Department of Computer Science
>Washington University in St. Louis
--
PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST ARCHIVES!
http://www.redhat.com/RedHat-FAQ /RedHat-Errata /RedHat-Tips /mailing-lists
To unsubscribe: mail [EMAIL PROTECTED] with
"unsubscribe" as the Subject.
