I have prepared the following floppies:
1) Boot disk - I formatted 1.44MB floppy from my Win98 PC, then copied ftp.suse.com's zImage.140.(renamed as zimage)to it.
2) ramdisk - I used rawrite to write into 2nd floppy from ftp.suse.com's ramdisk.image.deflt.gz
 
I updated 43P firmware to be TIG01150 successfully.
From the 0> prompt, I issued
    boot floppy:,\zimage root=/dev/fd0 load_ramdisk=1 ramdisk_size=128000
I got back the 0> prompt; and the 43P's floppy show that it's reading the boot disk.
But nothing else came out even after 1/2 hour. THe floppy drive kept reading.
 
I tried again without success. THis time, I preceded boot floppy with "setenv real-base c00000"
and "setenv load-base 20000".
 
I never got the phase where it asks for the RAMDISK.
 
pls help. thanks,
azman