Re: Serial port access on ][c

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

Jeff Blakeney <CUTjefbla@bconnex.net> wrote:

> On Sat, 27 Feb 1999 06:06:29 GMT, dreamer@freelow.ninsei.com (Steven
> Young) wrote:
> 
> >  My question: What's going on? Should I be using a different command?
> >Is it because of the crappy ROM? 
> 
> I'm not sure if I've ever heard of a //c that couldn't go above 1200.
> I thought it was a higher speed like 2400 or 9600 that earlier //c
> machines had a problem with.

It isn't a problem with any particular speed.  The problem with the
original IIc motherboard is that _all_ speeds are about 3% too slow.
This doesn't affect dumb 300 bps modems, but many smart modems (1200 bps
and faster) can't cope with the difference.

It depends on the particular device you are connected to.  I've had no
problems transferring data at 9600 bps or 19200 bps between a IIgs and
original IIc via a null modem cable.

The only issue with 1200 bps is that this is the default speed used by
the IIc modem port when you initialize the firmware with PR#2 or IN#2.

To change to a higher speed, type Ctrl-A, the appropriate number for the
desired baud rate, then the letter B.

Ctrl-A 14B        gives you 9600 baud.
Ctrl-A 15B        gives you 19200 baud.

> I think the problem you are running into is the order in which you are
> doing things.  Try typing IN#2 and press return and then type CTRL-A
> followed by a T.  This should put you in terminal mode.  Try typing
> stuff on your II and on your PC.  You should see the stuff you type
> appearing on the opposite machines screen.

In case you need to get out of terminal mode again, type "Ctrl-A Q".

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand