Restarting T414 links

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1 total messages Started by Chris Stops Tue, 11 Jun 1991 09:58

#1819

Author: Chris Stops
Date: Tue, 11 Jun 1991 09:58

54 lines
2437 bytes

Hello Netters!
             Here is a question for *REAL* hardware buffs...

I  have an application in which communication from a T414 transputer to a
C011  link  adapter could  be suspect,  so  the transputer  link must  be
programmed  in   a  fault   tolerant  way  using  the   reinit  library's
OutputOrFail.t, Reinitialise, etc.

If I deliberately fail the system by pulling off the link  to the C011, I
find that communication can be re-establised on one transputer  system we
have here, but not for another one of identical circuit design.

The layout of  the two boards is different,  but since they both function
perfectly well  with 'ordinary'  occam programs,  I can't  see a  problem
here.

The  other difference  is that  the board  that can  restart  has a  T414
transputer marked as:

(M) inmos B
IMST414B-G17S
8729

NMN02K
UK

...while  the board that  can't restart has XREL  written in pink writing
on it and a transputer marked...

(M) INMOS B
IMST414BG
PRE QUAL
8617
F203
N6346HY
MADE IN U.K.

The network  tester reports  that it is  a 15MHz  device, even though  it
doesn't say so in the markings.

Does anyone out there know of  any differences between these two  devices
which makes the second one less able to restartB ? Thanks in advance...

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* Chris Stops   *                                             *
* Room A16      * Janet                                       *
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