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1993-10-17
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ToggleDTR 1.0
~~~~~~~~~~~~~
(c) 1993 by Marc Heuler (Data Design)
English Documentation
Disclaimer
~~~~~~~~~~
This program (and all files related to it) are Copyright 1993 by Marc
Heuler (Data Design), all rights reserved.
You may freely distribute ToggleDTR by these conditions:
╖ Don't take *anything* for copying, except the cost of the media
itself
╖ Do not change any of the files related to this program
╖ Distribute all related files at once, packed into one archive
╖ German PD-Serials are not allowed to distribute this program
╖ Fred Fish with his famous software library does *not* have to
care about all these conditions.
This program is "AS IS", which means you use it at your *own* risk.
There's no warranty at all. Please do read the WARNING section.
Many thanks to Michael Herold for the inspiration.
Requirements
~~~~~~~~~~~~
This program supports and requires Kickstart 2.04 (v37) or higher. It
works on the internal serial port only.
What is it?
~~~~~~~~~~~
My system often calls out automatically via modem. The UUCP software I use
sometimes hangs on a call. It then sends error messages until I manually
abort the transfer. This is very annoying since the call costs money.
ToggleDTR is the solution to those problems. I use it to turn of the DTR
signal for a few seconds when UUCico is spending too much time on a call -
causing the modem to hang up.
WARNING
~~~~~~~
This program is a *dirty* hack. It does access the hardware directly.
These are the things you should know before running it:
╖ Blindly accesses bit 7 in ciapra of CIA-B to control DTR signal.
╖ Checks left and right mousebutton for abort using the hardware
registers.
╖ Does the inner loop while Forbid()ing multitasking to prevent
hazardous trouble on the serial port.
If you still want to run this program, here's the usage..
Usage
~~~~~
ToggleDTR can be started from CLI/Shell only. It then takes one parameter:
DURATION/N
Time in milliseconds to drop DTR signal. Default is 1000 (1 sec).
To abort the program while having DTR low, press both left and right
mousebutton.
Author
~~~~~~
Flames about the hardware access go to "NULL:Flame".
Otherwise contact me at:
Marc Heuler
Stephanstr. 6
D-97070 Wuerzburg
marc@aargh.incubus.sub.org
+49 931 53295