I just tried to do an i386 build from today's sources.  However,
the stuff for rescue-tiny is too big to fit on a single floppy:

all ===> i386/floppies/rescue-tiny
Copying /mnt/NetBSD-current/destdir/usr/mdec/biosboot.sym to boot
Creating USTAR.volsize.4540
Copying /mnt/NetBSD-current/src/distrib/i386/floppies/instkernel/obj/netbsd-RESCUE_TINY.gz to netbsd
Creating rescue-tiny1.fs from: boot USTAR.volsize.4540 netbsd
PAX=/mnt/NetBSD-current/src/tools/obj/tools.NetBSD-1.6_RC1-i386/bin/nbpax sh /mnt/NetBSD-current/src/distrib/common/buildfloppies.sh  -i "/mnt/NetBSD-current/destdir/usr/mdec/installboot -b 17 -f /mnt/NetBSD-current/destdir/usr/mdec/biosboot.sym @IMAGE@"   -m 1 -s .fs  rescue-tiny 2400 boot USTAR.volsize.4540 netbsd
Running instboot: /mnt/NetBSD-current/destdir/usr/mdec/installboot -b 17 -f /mnt/NetBSD-current/destdir/usr/mdec/biosboot.sym floppy.13912.tar
buildfloppies.sh: Image is 8192 bytes (8 KB) too big to fit on 1 disk
*** Error code 1