486 case LED display jumpers

[Chuck Guzis]

On 27 May 2009 at 20:02, Philip Pemberton wrote:

> Teo Zenios wrote:
> > Anybody happen to have the jumper diagram to set a LED 2 digit case
> > speed setting? The PCB has ST-8A on it if that helps.
> 
> There's a reverse-engineered partial circuit on VOGONS:
> http://vogons.zetafleet.com/viewtopic.php?t=10780&sid=f80bc89c785100a9
> d5bfa236f7e45b31

I *may*  have the little chart that came with one of these, but to be 
honest, I've never used the chart.  My approach is very simple. 

* Remove all of the jumpers. 
* With the switch in the "normal" position, move a single jumper 
around and note which segment is illuminated.
* Repeat with the switch in "turbo" mode.
* Create your own legends.

Like other posters, my legends usually say "Lo" and "HI".  But you 
can get creative with yours...

--Chuck