Re: More on "VT100 emulation"

Sue Dolezal (sdolezal@montana.com)
Sun, 8 Jan 95 00:26 PST

The Zoomer does not have a standard UART chip, and I am not sure about
RTS/CTS (clear to send, I think). However, I use 19200 baud regularly
and reliably ... it has never given me any problems.

But GeoConn must have hardware flow control as a menu option.

On Sat, 7 Jan 1995 ECHURCH@delphi.com wrote:

> According to "Modems for Dummies" software flow control = xon/xoff flow
> control is OK up to 2400 but is unuseable (inefficient?) at higher speeds.
>
> Above 2400 hardware flow control must or should be used. This in turn requires full 9-pin cabling out of the RS 232 port, and the external modem must be configured for hardware flow control -- which it would be, one hopes, for a properly-
> engineered modem designed for operation at speeds > 2400.
>
> A second requirement is that the terminal emulator driving the cabling and
> external modem must be configured for hardware flow control. I'm not sure
> what that means in practice, but buzz words are "UART chip" and "RTS/CTS
> hand shaking".
>
> Also, it's not clear whether it matters for the Zoomer which may not be
> capable of running above 2400 in the first place even though the preference
> table lists higher speeds.
>
> Comments? ................................ 'Gene Church
>