Description of files found in .../NetBSD-1.3/alpha/installation/floppies:

INSTALL is an updated kernel configruation file for the INSTALL
kernel used in the files below. The standard one that comes with
1.3 is missing a couple of updates necessary for the install script
to work correctly.

install13.fs is an uncompressed image of an installation floppy.
Please read the INSTALL document to learn how to use it.

netbsd_ram.tar.gz is a compressed INSTALL kernel (the same kernel
that is on the floppy) for booting from an NFS server, if you choose
to install that way.