I found the reason.
the crt0.s (from reset16.....failover....auto...) is too big. So the _start
is across the 0xffff0000.
unless move reset16 and entry16 near reset_vector. We have to make crt0.s is
the linuxbios_ram.rom could cross the 64K limit above the crt0.s
From: Ronald G. Minnich [mailto:email@example.com]
Sent: Tuesday, January 25, 2005 7:40 AM
Subject: Re: fallback reset_vector offset
send me the config file you are using. This is weird.