SPARCengine 1e and VxWorks

Paul Palumbo palumbo at acsu.buffalo.edu
Thu Jun 6 00:17:00 AEST 1991


Are there any other SPARCengine 1e users (6U format) that are using Wind 
River's VxWorks real-time OS?  We currently have several of these boards
which are currently made by SUN.

I have several problems that I am having trouble resolving thru Wind
River.  For example:
	1) VxWorks is shipped with the MMU only mapping 4 Megabytes of
	   local memory so the processor can access it.  When I change the 
	   initialization to map the 16 Megabytes that I have, it appears 
	   that the VxWorks kernel complains (in kernelInit) when I tell it 
	   that the system is now 16 Megabytes instead of 4 Megabytes.  Has 
	   anybody used these boards with VxWorks with more than 4 Meabytes???
	   I also have SRX boards which allows me to increase the memory size 
	   by 64 Megabytes.  It would appear hard for the MMU to be 
	   initialized to access all this memory at the same time.  Is it 
	   possible to change the MMU in VxWorks on the fly instead of at boot 
	   time?
	2) I am attempting to communicate between two processors on the same
	   backplane but I am unable to read a memory location in processor
	   0 from on processor 1.  What address should I be using on processor
	   1 and how should processor 0 be configured?
	3) Has anybody used the backplane driver for the SUN 1e?  I don't seem
	   to be able to get it to work?
	4) Any comments on the soon to be released FORCE boards which are
	   copies of the SUN 1e but with improvements?
	5) Is there a "distribution list" for users of VxWorks where questions
	   like this are asked?


Thanks for the help,


Paul Palumbo                    internet:palumbo at cs.buffalo.edu
Research Associate              bitnet:  palumbo at sunybcs.BITNET
226 Bell Hall                   csnet:   palumbo at buffalo.csnet
SUNY at Buffalo  CS Dept.
Buffalo, New York 14260
(716) 636-3407    uucp:   ..!{boulder,decvax,rutgers}!sunybcs!palumbo





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