DAB> In a message of    Well, I have used DosEnterCritSec when I had to call a 
 DAB> time-critical communications routine in order to prevent timeouts 
 DAB> (Communicating with weird PLC's).

 >That wouldn't happen to have been an Allen-Bradley 
 >PLC (specifically, the 
 >SLC500 series via PIC...), would it?  

 DAB> Bingo.  Actually, the Allen Bradley's weren't nearly as bad as the
 DAB> GE SNP PLC's.   Why the ? 

I'm writing an Allen-Bradley driver right now... been working on it for
over two months already... AB has more surprises up its sleeve than I know
what to do with.  And I'm not even "done" the serial (via KF2)
support yet - I support PLC5/SLC500, but not PLC2/3/4.  My scope does
include PLC2...

Anyway, it was my project leader that wrote the GE SNP.  :-)

(That and this is under Windows... the AB driver I'm writing is Win32, but
the GE SNP one was Win16... a little bit easier there.)


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