On Tue, 10 Mar 1998, Doug Little wrote:
> >BTW: I suggest shielding all of the wires, better be safe than sorry!
>
> Most of the problems we encountered were due to the shape of the
> waveform coming from the buffer - the DMA chip clock pin is calibrated
> in such a way that getting it to trigger properly is difficult. You really
> have to go enter the realms of analogue electronics to fix the problem.
<speculation>
If the DMA-chip is so picky about the signals, won't it just make it
even more susceptible to interference? Shielding the DMA-clock could
make a difference in situations where the DMA-chip is "living on the
edge".
Or is this total BS?
</speculation>
Btw. I've just shielded the AB-wires and the AB-itself, I'm hoping
this will increase stability in 40MHz. It's been up and running for a
good half hour now...
/*
** Jo Even Skarstein
http://www.stud.ntnu.no/~josk/
**
** beer - maria mckee - atari falcon - babylon 5
*/
Received on ti. mars 10 1998 - 20:55:00 CET