Re: v.34 modem???

[dempson@atlantis.actrix.gen.nz (David Empson)]

In article <088eyc7w165w@ersys.edmonton.ab.ca>,
Denis Fafard <denisf@ersys.edmonton.ab.ca> wrote:
> 10587@suzie.tccn.com (Geoff Pursell) writes:
> 
> > Is it possible to use a v.34 modem at full speed with either ProTERM or 
> > ANSIterm?  If so, I'll spring for one, if not, I'll just get v.32.
> > 
> 
> Well, SURE it is!  An totally unmodified GS can access the port up to 
> 38400 without any patches or anything.

19200 is the highest speed supported by the Control Panel.  Higher
speeds (28800, 38400 and 57600) can be selected by software writing
directly to the serial chip's baud rate divisor register.  This is
what QuickPort does.  Some comms programs provide high-speed options
as standard and do not require any special programs.  Examples are
Z-Link and Spectrum.

> If you've got a SSC, I'm sure that it will go 19.2k at LEAST, perhpas
> even 38.4k.  Go for it! 

A standard SSC can only go to 19200.  There is a third-party hardware
product called the TurboASB which allows the SSC to go as high as
115200, but I don't think many Apple IIs can cope with that speed,
especially on an SSC, which only has a one byte receive buffer.

57600 should be plenty for good V.34 operation (28800 bps with data
compression).  In ideal circumstances (transferring uncompressed data
that compressed well) you might be able to exceed 57600, but this
would not be a common situation.
-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand