[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

2619.0. "Speed buffering?" by GUCCI::HERB () Sat Jun 03 1989 15:58

    What is speed buffering? I have a 2400 baud scholar modem and in
    the directions it mentions something about 9600bps speed buffering.
    Is this helpful?
    
    matt
    
T.RTitleUserPersonal
Name
DateLines
2619.1Speed buffering = data rate bufferingHPSCAD::GATULISFrank GatulisSat Jun 03 1989 22:4128
   I think I understand it!
    
    Speed buffering allows you to have different baud rate between your
    modem and your terminal than your modem and the phone line. For
    example:  You could set the speed of your serial port to be whatever
    you like and the modem can still work at 1200 or 2400 baud.  That's
    really convenient, especially if you share the serial port between
    the modem an a faster printer. Without speed buffering your serial
    port would have to be set to the baud rate of the modem.
    
    Another application -  Let's say you set both your serial port and modem
   at 2400 baud and your happily computing.  All of a sudden the line
   becomes noisy and the Scholars drop to 1200.  Rate buffering allows
   this to happen and maintain your connection.
    
    The downer is that the speed buffering works (I think) by sending x-on
    x-off's which puts the screws to XMODEM.  I can no longer use XMODEM
    when dialing in through our LAT and it seems it's because all of
    the modems have speed buffering enabled.  I now use ZMODEM exclusively
    because of this.  ZMODEM is excellent, too bad handshake doesn't
    support it.  Although  AZComm  supports ZMODEM, I think it's the pits
    and bought ATALK III which I now use for a Comm pkg.
    
    Hope this helps (and is accurate).
    
    Frank
    
    get
2619.2How do you set the serial ports baud rate?I uGUCCI::HERBSun Jun 04 1989 16:324
    So ,do you mean I can not download at 9600?
    
    matt
    
2619.319200!WJG::GUINEAUMon Jun 05 1989 11:4310
> So ,do you mean I can not download at 9600?

Sure you can. In fact you can download at 19200 if you'ld like.

Just bring your amiga into work and hook it up to your local MicroVAX's
serial port...


John
2619.4HPSCAD::GATULISFrank GatulisMon Jun 05 1989 12:095
    
    The Amiga is not the bottleneck in the download - you set the speed
    of the serial port through preferences.
    
    Frank