the question of the starting of uclinux by u-boot

hi Scott:

i remake the kernel by the microtronic cyclone development board and the microtronic psk development board. but, the problem is same to the before.

the output:

==> bootm 00040000# # Booting image at 00040000 ...

Image Name: Linux Kernel Image

Image Type: Nios-II Linux Kernel Image (gzip compressed)

Data Size: 460103 Bytes = 449.3 kB

Load Address: 00800000

Entry Point: 00800000

Verifying Checksum ... OK

Uncompressing Kernel Image ... OK

cursor winke( halt )

Because my sdram is 16 bits in my development board. but, the sdram is 32 bits in the altera and microtronic. maybe it be the problem? how to solve it ?

i want to know how to modify settings the kernel of uclinux or the other good mothed.