Twin directories of isa:

[DIR]  ftp://core.ring.gr.jp/pub/NetBSD/NetBSD-release-4-0/src/sys/arch/bebox/isa/
[DIR]  ftp://core.ring.gr.jp/pub/NetBSD/NetBSD-release-4-0/src/sys/arch/i386/isa/
[DIR]  ftp://core.ring.gr.jp/pub/NetBSD/NetBSD-release-3-1/src/sys/arch/bebox/isa/
[DIR]  ftp://core.ring.gr.jp/pub/NetBSD/NetBSD-release-3-1/src/sys/arch/i386/isa/
[DIR]  ftp://core.ring.gr.jp/pub/NetBSD/NetBSD-release-3-0/src/sys/arch/bebox/isa/
[DIR]  ftp://core.ring.gr.jp/pub/NetBSD/NetBSD-release-3-0/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-current/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-current/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-current/src/sys/lkm/dev/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/arm32/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/cats/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/dnard/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/netwinder/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/ofppc/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/pica/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/x86_64/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/lkm/dev/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-4-0/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-4-0/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-0/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-0/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-0/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-0/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.uvsq.fr/pub/FreeBSD/development/FreeBSD-CVS/src/sys/i386/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/lkm/dev/isa/
[DIR]  ftp://ftp.au.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.au.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.au.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/lkm/dev/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-4-0/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-0/src/sys/arch/bebox/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-0/src/sys/arch/i386/isa/
[DIR]  ftp://ftp.int.ru/.1/FreeBSD/development/FreeBSD-CVS/src/sys/i386/isa/
[DIR]  ftp://ftp.mtu.ru/.3/FreeBSD/development/FreeBSD-CVS/src/sys/i386/isa/
[DIR]  ftp://ftp2.sk.freebsd.org/FreeBSD/development/FreeBSD-CVS/src/sys/i386/isa/
[DIR]  ftp://ftp.za.freebsd.org/development/FreeBSD-CVS/src/sys/i386/isa/
[DIR]  ftp://ftp.esat.net/mirrors/.1/ftp.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/sys/i386/isa/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/freebsd/development/FreeBSD-CVS/src/sys/i386/isa/
[DIR]  ftp://128.118.2.96/pub/.mirrors/1/ftp.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/sys/i386/isa/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-current/src/sys/arch/bebox/isa/