Hi Mike: Well I was wrong about the control line. It's a control-a.
Anyway here are my docs on the subject. Not all of the commands work
as advertised.
Kirk
[:dv g5 dd] Will provide the ability to set the volume
of the DECtalk Express. Values of DD should range
from 60 to 86.
[:power speak|status] Speaks or provides a character
string of the power status of the DECtalk Express.
The status messages are Battery OK, Battery Low or External
Power ON.
[:power sleep|interval X] Puts the unit in power save mode
or provides a low battery warning after "X"
seconds.
[:tsr off|on] Default is "on". When turned "off", the keep-
alive characters sent from the DECtalk Express
to the TSR are not sent. Used when communicating directly to
the COM port.
[:version speak|status] Causes the DECtalk Express to
speak or return a character string of the current
version of the firmware.
CTRL C Causes the DECtalk Express to perform an
immediate stop speaking and flush any pending text
and index markers. The unit returns a "CTRL A" when
the flush is completed. It is recommended that you do
not send any other text or commands until the CTRL A
is received. Otherwise some of the text and/or
commands sent after the CTRL C may also be flushed.
If part of a command is flushed it could leave the
unit in an undeterminable state.
NOTE: In this version it is necessary to initially
send two CTRL Cs before the first CTRL A
comes back.
CTRL N Pause speaking. CTRL O resumes speaking.
CTRL O Resumes speaking. CTRL N pauses speaking.
FLOW CONTROL.
The DECtalk Express uses the XON/XOFF (Ctrl-Q/Ctrl-S)
protocol for flow control.
FIRMWARE UPGRADE.
The firmware loader program, LOAD.BAT, will try to determine
if the PC has a 16550 compatible UART. If it finds one, it
will upload the firmware at 57.6KB. If not, it will upload
the firmware at 9600 Baud with an approximately 15-20 minute
load time.
--
Kirk Reiser The Computer Braille Facility
e-mail: kirk at braille.uwo.ca University of Western Ontario
phone: (519) 661-3061
