-- [ From: Shabbir A Bashar * EMC.Ver #2.5.02 ] --

Hi all,

I am more into electronics than programming but I'm just starting on
the PIC 16c84.

I wired up my first circuit yesterday (just the 5V regulator, pic and
a crystal oscillator).

The oscillator is the standard recommended setup -  4Mhz crystal and
2 27 pF capacitors running from each side of the crystal to 0V.

I programmed the PIC (using a separate programmer and software that I
know works) with a simple routine that should  output 00101 on PORTA
and set PORTB running as a decrementing counter. Both ports are set
to output. PWRON reset pin is tied directly to +5V (as in the
sheets).

All I wanted to do was to probe the pins and assure myself that the
thing's actually doing as it is told.

However, I get nothing (other than the correct voltages at drain and
source ports).

Using my nasty (ancient) oscilloscope I can not detect any
oscillations coming from either clock pin. One of the clock pins is
at 0V and the other sits at roughly 0.24V.

The XTal fuse was set when I programmed the pic.

Any ideas??

Antonio

antonio@vilches.idiscover.co.uk

--
Shabbir A. Bashar
Research Associate, Centre for Optics & Electronics
Dept. of Electronics Engineering
King's College London, WC2R 2LS, UK
E-mail : s.bashar@kcl.ac.uk
http://www.spods.dcs.kcl.ac.uk/~sb/sab/sab.htm
Tel. : +44 (0)171 836 5454 ext. 3606
Fax  : +44 (0)171 873 2844 or 836 4781