> 
> > Date: Thu, 25 Jan 1996 16:45:51 -0800 (PST)
> > From: Curt Sampson <curt@portal.ca>
> 
> > On Thu, 25 Jan 1996, Christian Nygaard wrote:
> > 
> > > I've gotten so far that the NETBOOT program loads, but then the
> > > machine hangs when initializing bootparamd protocol, its just standing
> > > there showing its network address in HEX and requesting a address.
> > 
> > This is a problem with netboot on some (many?) machines. Unfortunately,
> > gwr can't reproduce it on his, and nobody else has gotten around to
> > tracking it down yet. I suggest you replace it with the sSunOS boot
> > program from the Xkernel kit.
> 
> I scrounged up a Sun3/50 with PROM revision 2.6 and have finally been
> able to reproduce the hang described above.  (I had an old 3/50 that
> Adam sent me, but had to displace something to make room for it...)
> 
> The hang occurs when the netif_sun.c module calls the PROM open
> routine.  The open would sometimes work, but often fail.  I tried
> changing the resources passed to the PROM open and found that the
> open routine in PROM version 2.6 appears to be sensitive to the
> location of the DVMA buffer supplied to it.  When I use a "high",
> page-aligned DVMA address, the PROM open routine works reliably.
> 
> I'll check-in these changes and put the latest netboot on
> ftp.netbsd.org: /ftp/pub/NetBSD/arch/sun3/
> 
> Thanks to all who helped accurately characterize the problem.
> Now let's see if we can make SCSI work on the old 3/50...
> 
	Would you like me to try to send you my CDC drive and the
motherboard of my 3/50 (if you have a 3/50 over there you could simply
slap my MB in it) with 2.3 PROM?  If it can work in this setup, it
probably can work in anything. =)