JRS: In article <38FCAEE5.AA687...@uplink.de> of Tue, 18 Apr 2000
20:52:21 seen in news:comp.lang.pascal.borland, Martin Stahl
Quote
<kra...@uplink.de> wrote:
>Dr John Stockton wrote:
>> It may be worthwhile to open up the joystick, get direct access to the
>> resistors, and build a better circuit to measure the settings - perhaps
>> drive it through a constant-current diode, and measure the voltage with
>> an 8-bit ADC parallel-connected to the PC. Or serial-connected; a COM
>> port will go quite fast, and you don't need to read every character.
>Could you please tell me where I can find some informations about
>that? I am especially interested in the version with the COM port.
>Now I have an other question. You use much of this "short cuts" in
>your postings, like IIRC or ISTR. Some of them I do not understand.
>Where can I find a list of this "short cuts"?
In TOOTKA.
From my news-use.htm :
TOOTKA (tootka = Terms One Ought To Know About) is an old list of acronyms :
<A HREF="ftp://ftp.demon.co.uk/pub/doc/general/tootka.txt">FTP demon.txt</A>,
<A HREF="http://www.orbital.co.za/tootka.htm">HTTP za.htm</A>;
try also another, vast, list at
<A HREF="http://www.astro.umd.edu/~marshall/abbrev.html">HTTP umd.edu</A>.
An online computer dictionary can be found at
<A HREF="http://wombat.doc.ic.ac.uk/">Imperial College</A> (?), London.
Or see FYI18.
To what I suggest, alas, you really do need experience of some sort in
electronics. If I still had the facilities to build and test one, I
might be able to describe it so that it could be copied; or if you were
experienced, you could work from such suggestions. But as is, the
combines risk of damage or failure is too great. Perhaps if you were to
ask in a local newsgroup, you could find someone nearby to work with?
My page pc-urls.htm has a number of general references to use of serial
& parallel ports, but the serial port link is marked as gone :-(
PC <A HREF=
"ftp://rtfm.mit.edu/pub/usenet/news.answers/pc-hardware-faq/"
Quote
>Hardware FAQ</A> - get part# for # = 1..5.
Filip's <A HREF="http://www.paranoia.com/~filipg/">PC Ports</A>
- used to be at this URL - site is changing ...
The <A HREF="ftp://ftp.phil.uni-sb.de/pub/staff/chris/The_Serial_Port">Serial
Port</A> (Gone? Where?)
"The <A HREF="http://www.lvr.com/ibmlpt.txt">document</A> (FNF)
contains a full description of using the parallel port this way," (Gone?)
The <A HREF=
"http://www.strangecreations.com/strange/library/hardware/parallel.txt">
Parallel Port</A> (FNF).
There may be another parallel port FAQ?
Kris Heidenstrom's Parallel Port
<A HREF=
"http://home.clear.net.nz/pages/kheidens/ppmfaq/khppmfaq.htm">mini-FAQ</A>.
Jan Axelson's <A HREF="http://www.lvr.com/">Lakeview Research</A> :
<I>"The source for information and tools relating to parallel ports,
RS-232 and RS-485 serial communications, 8052-Basic microcontrollers,
and making printed-circuit boards."</I>
"Interfacing to the IBM-PC Parallel Printer Port", Ian Harries,
<A HREF="http://www.doc.ic.ac.uk/~ih/doc/par/">IC</A> : links and
details.
Here's a thought : the standard joystick drivers are likely to have been
written long ago, for slow PCs. IF the joystick circuit is as I think,
and if you were able to reduce the capacitor, you might be able to run
it faster on a modern machine with RDTSC.
--
? John Stockton, Surrey, UK. j...@merlyn.demon.co.uk Turnpike v4.00 MIME. ?
Web <URL: http://www.merlyn.demon.co.uk/> - FAQish topics, acronyms, & links.
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