THE FOLLOWING INFORMATION WAS PROVIDED TO IKON BY SUN'S Sbus SUPPORT GROUP

     SPARCstation-2 SunOS 4.1.1 patch for multiple register set devices

The Bug:

	On the SPARCstation-2 with SunOS 4.1.1 SBus cards with more
	than one register set defined in the FCode PROM will have
	corrupt dev_info information in the register address field.
	This is a bug in the way the kernel decodes the FCode PROM
	information from the SBus card during the boot/autoconfiguration 
	process.  It will be fixed in the next SunOS release.


The Fix:

	The bug lives in /usr/share/sys/sun4c/openprom_xxx.c which
	comes with the SPARCstation-2 running SunOS 4.1.1.  The fix is
	to change line 155 in the above file so that it looks like;

	    for (i = 0, regp = dip->devi_reg; i < dip->devi_nreg; ++i, ++regp) {
								       ^^^^^^

	Then recompile this module and re-build vmunix, reboot it and
	you should be all set.


Files Provided:

	We have taken the liberty of including this change on this
	diskette.

	openprom_xxx.c - soruce file with above change

	openprom_xxx.o - object module compiled from above soruce module

	vmunix.Z - GENERIC SunOS 4.1.1 (for the SPARCstation only) with
		above change built into it.  This file is compressed in
		in it's current form.  Do not boot it, first type

			uncompress vmunix.Z

		then boot the resulting vmunix file.

	info.generic - output from devinfo -v on a SPARCstation-2
		that shows the bug before its fixed.  Look at node
		SUNW, serftest1 the bus types and register addresses
		under the register specification section.  Both of
		these fields are wrong.

	info.fixed - the correct output from devinfo -v running the
		vmunix included on this diskette.