[comp.realtime] Question: QNX on the VME Bus?

denault@hale.ifa.hawaii.edu (Tony Denault) (10/26/90)

Our group (NASA Infared Telescope facility) is evaluating QNX for possible 
use in a telescope control system. Part of the system is contained in a
VME bus. We are thinking running QNX on RadiSys's EPC-4 (80386 VMEbus 
Embedded PC CPU Module). 

I would like to hear from anyone who used these products together. I would 
also like to know if a task, running under QNX, can communicate with 
other processors in the VME bus. If so, how is it done.

Thanks in advance.

				Tony Denault 
				Software Programmer

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| Tony Denault, Institute for Astronomy,  | denault@uhifa.ifa.hawaii.edu |
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| Tony Denault, Institute for Astronomy,  | denault@uhifa.ifa.hawaii.edu |
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aras@ecerl1.ece.ncsu.edu (Caglan Aras) (10/26/90)

We are using OS/9 on a Matrix MD-320 CPU system. We actually have a
second MD-320 with the probe debugger on it. We are trying to set up a
multiprocessing system, perhaps even increasing the number of
processors. 

Is there anyone out there who is using OS/9 with multiple CPUs? HAve you
added extensive software to do this? Is OS/9 running on all the CPUs or
is only one CPU running the OS and the others just executing modules?

Also, for those folks using OS/9, is there a way to speed up the
compiler? Now it takes a horribly long amount of time (Compared to an
equivalent compiler on the PC or Mac) even forthe smallest programs.



Caglan M. Aras    aras@eceris.ncsu.edu| Experts know more and
N. C State Univ.                      | more about less and
ECE Dept. Robotics Lab                | less till they know
Raleigh, NC 27695                     | everything about nothing!