🚀 go-pugleaf

What you're really trying to do is extracting a part of memory with
nonunit stride. (Unit stride is of course handled just by using 
assignment in occam and translated into the MOVE instruction.) The
T800 and followon (T425, T400, T805, T801) have MOVE2D exactly for
this purpose. Unfortunately, the compiler's builtin function has
a braindamaged interface (IMHO) requiring massive RETYPES, as well
as some code generation bugs (if certain arguments aren't constant
or VALs, space is allocated for their computation, but the computation
is never done :)). So I defined my own routine(s) for the purpose.
It is very efficient: For instance, if you're doing, say, a 2D FFT,
for the column part it is better to extract each column into a 1D array,
perform the FFT on it, and reinsert it with MOVE2D. This works because
you save massively on address computations, need only a 1D FFT that is
unaware it is working on a 2D array, and you can PLACE the temporary
array into the WORKSPACE.

So the solution is to extract your data from your 2D array into a buffer
using MOVE2D, send that, and scatter it at the receiving end via MOVE2D,
if required.

 Jan Vorbrueggen, Inst. f. Neuroinformatik, RuhrUniversitaet Bochum, FRG
 jan@neuroinformatik.ruhrunibochum.de

On British ITV, Tuesday 8/9/92 at 9 pm, something called a transputer was the 
focus of a detective program ("Boon"). This device, a "printed circuit to help 
computers talk to one another".  

Some of the technology was quite correctly portrayed. It seemed important that 
"the FPU was on the same chip as the CPU", although the actor seemed 
uncomfortable with the line.  The industrial spies seemed to spend a lot of 
time stripping the data from proms or EPLD's or such.

Perhaps it was not a good idea to hide the thing (even in its carefully labeled 
antistatic wrapper) in the cistern of a toilet.

Did Inmos give permission for this usage?

 David Lyons, Computer Science, University of Essex, Colchester C04 3SQ 
 England.  Tel: 44 206 872674 
 Email: lyond@uk.ac.essex  Fax: 44 206 872788 (GP's 3/2/Auto) 
 David Lyons, Computer Science, University of Essex, Colchester C04 3SQ /-----\
 England.  Tel: 44 206 872674                                           |-o_o-|
 Email: lyond@uk.ac.essex  Fax: 44 206 872788 (GP's 3/2/Auto)           |     |
 The most important things in life are Red Balloons.                    |!!!!!|

In article <5374@sersun1.essex.ac.uk> lyond@essex.ac.uk (Lyons D M) writes:
>On British ITV, Tuesday 8/9/92 at 9 pm, something called a transputer was the 
>focus of a detective program ("Boon"). This device, a "printed circuit to help 
>computers talk to one another".  
>
>Some of the technology was quite correctly portrayed. It seemed important that 
>"the FPU was on the same chip as the CPU", although the actor seemed 
>uncomfortable with the line.  The industrial spies seemed to spend a lot of 
>time stripping the data from proms or EPLD's or such.
>
>Perhaps it was not a good idea to hide the thing (even in its carefully labeled 
>antistatic wrapper) in the cistern of a toilet.
>
>Did Inmos give permission for this usage?
>

Yes.

We gave them some old boards (B002's I think) from the cupboard.
We didn't know anything about the plot until the screening this week

Don't know where the idea came from.


-- 
David Boreham, INMOS Limited | mail(uk): davidb@inmos.co.uk or ukc!inmos!davidb
Bristol,  England            |     (us): uunet!inmos.com!davidb
+44 454 616616 ex 547        | Internet: davidb@inmos.co.uk