I have used a RM200 a year ago, so I hope what I say is correct : -)
I think you have to change Firmware. Doing it, you will be able to use floppy
disk for booting. There is a floppy disk called sitont. In the firmware
monitor, you choose the option change firmware (I am not sure of the name) and
you insert the disk.
Just another thing, if I am not mistaken, changing firmware require settling
processor in Big Endian thought it was in Little Endian for Sinix. If you have
a new RM, it is automaticly done, bt if your RM is quite old, you'll have to
change a jumper inside it.
Philippe JUNG (Philippe.Jung@Supelec.fr)
4 Place Edouard Branly, 57070 METZ, FRANCE