Erik Hermann wrote:

> I've seen a very simple circuit to read (program ?)  the 16C84
> directly via PC-Parallel Port.
> But I don't remember where.

Perhaps you mean Microchip application note AN589.  A Postscript copy
can be snatched from Microchip:

ftp://ftp.ultranet.com/biz/mchip/an589.zip

Details of another approach are available; get:

ftp://ftp.ee.ualberta.ca/pub/cookbook/comp/ibm/pic84*

David
--
david.tait@man.ac.uk