palumbo@acsu.buffalo.edu (Paul Palumbo) (06/05/91)
I currently have several SPARCengine 1e boards running VxWorks but I am having
some problems. I have attempted to talk with people at Wind River but they
don't seem to know much about the SPARC. Does anybody out there know anything
about the following:
1) I have the 16 Megabyte version of the SPARCengine boards and I want to use
all 16 Megabytes. It appears that VxWorks is initially configured (i.e. MMU,
etc.) to run with only 4 Megabytes. When I change the MMU to map 16 Megabytes
and I change the LOCAL_MEM_SIZE "define" to be 16 Meg, I get an "Error Lance
Chip: initialization failure"). My modificiations to the MMU appear correct
since I can now access the 16 Megs but I can not get the showMem command to
recognize the extra memory). I seem to track my problem down to when the
kernel initialization starts using the kernelInit command). What am I going
wrong? Has anybody used the boards with greater than 4 Megabytes of memory?
2) Is there any way of removing the MMU so I can access more than the 64
Megabyte window provided by it (the MMU is a problem when a board is
configured for > 64 Mega using the SRX board).
3) How do you communicate between boards over the VMEbus. I am attempting to
setup the VxWorks backplane driver and I need to tell the second board an
anchor address which is on the first board. To do this I need to specify
an address for the second board such that it can access the first boards
memory. How is this done? What address should I be using so that I can get
thru the MMU on the second board, onto the VMEbus, and then have the first
recognize the address is for it and then access the RAM on the first board.
4) Is there any electronic mailing list for VxWorks questions like this?
Thanks,
Paul Palumbo internet:palumbo@cs.buffalo.edu
Research Associate bitnet: palumbo@sunybcs.BITNET
226 Bell Hall csnet: palumbo@buffalo.csnet
SUNY at Buffalo CS Dept.
Buffalo, New York 14260
(716) 636-3407 uucp: ..!{boulder,decvax,rutgers}!sunybcs!palumbo