Bulletin number:  28
Products affected: D505A D605A D705B
Description: Problems in iconf
Component: iconf
Date: Fri Mar 9 16:46:24 GMT 1990
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The configurer supplied with the Occam2 toolsets sometimes makes a
".btl" file which will not work.  The exact reason for this is not
known.  However the following are some of the features of the bug(s).

The problems usually only occur on T8 processors.

There are often more than 16 processors.

The processes on each processor are usually small.

If the code generated for the calling part of a configuration differs
from one processor to another by one byte (because of the use of extra
pfix instructions in constants), and that one byte increase causes the
module to be one word longer, then the problem may occur.

This bug is very much characterised by "sometimes", "often", "maybe"
etc.  Nothing is definite.

The only known cure at the moment is to waste some workspace at the
start of the process by doing:

  PAR i = 0 FOR 1000
    INT j:
    SEQ
      j := 0