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Old 05-11-2005
Error BUS error intr - problem
Hi,

I have fundamentals of unix. I got a problem on my Realtime electronic system having IOPs as the man-machine interface. Repeatedly bus interrupt error message is coming onto the VDU.

For the sake of redundacy(hot standby), two IOPs are synchronised for the electronic system data. OS used in IOPs is proprietary version of bsh( with ps command i get sh process).This problem(Bus error intr) arised when i am executing same command from both the IOPs. After this, IOP are out of synchronization.

I couldnot format and load the unix to rectify this problem. The other IOP working fine.

I think UNIX experts can solve this problem easily. Please help me to solve this problem.If you require additional details, i can give you.

Thanks & regards,
Krishna
Last edited by pvkrishna; 05-11-2005 at 09:19 AM.. Reason: mistake
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LEARN ABOUT BSD

css

CSS(4)							     Kernel Interfaces Manual							    CSS(4)

NAME

       css - DEC IMP-11A LH/DH IMP interface

SYNOPSIS

       /sys/conf/SYSTEM:
	    NCSS css_controllers     # DEC/CSS IMP11-A ARPAnet IMP interface

DESCRIPTION

       The  css device provides a Local Host/Distant Host interface to an IMP.	It is normally used when participating in the DARPA Internet.  The
       controller itself is not accessible to users, but instead provides the hardware support to the IMP interface  described	in  imp(4).   When
       configuring, the imp(NIMP) pseudo-device is also included.

DIAGNOSTICS

       css%d:  not  alive.  The initialization routine was entered even though the device did not autoconfigure.  This is indicates a system prob-
       lem.

       css%d: can't initialize.  Insufficient UNIBUS resources existed to initialize the device.  This is likely to occur when the device  is  run
       on  a buffered data path on an 11/750 and other network interfaces are also configured to use buffered data paths, or when it is configured
       to use buffered data paths on an 11/730 (which has none).

       css%d: imp doesn't respond, icsr=%b.  The driver attempted to initialize the device, but the IMP failed to respond after 500 tries.   Check
       the cabling.

       css%d: stray output interrupt csr=%b.  An interrupt occurred when no output had previously been started.

       css%d: output error, ocsr=%b icsr=%b.  The device indicated a problem sending data on output.

       css%d: recv error, csr=%b.  The device indicated a problem receiving data on input.

       css%d: bad length=%d.  An input operation resulted in a data transfer of less than 0 or more than 1008 bytes of data into memory (according
       to the word count register).  This should never happen as the maximum size of a host-IMP message is 1008 bytes.

3rd Berkeley Distribution					  August 20, 1987							    CSS(4)