[syslinux] pxelinux limits on imagefile for tftp transfer?

[Martin Egloff]

Hello specialists

In setting up a diskless X-Terminal I got stuck with the transfer of the 
ramdisk from the
server to the target.

With a ramdisk image size of about 60 Mb things go well, the file gets 
transfered completely and Linux boots perfectly.

With a ramdisk image size of about 104 Mb the tftp transfer of the 
kernel succeds but
the transfer of the ramdisk image fails.  As tftp daemon I use atftpd. 
Is log says:

tftpd:   Requested file to big, increase BLKSIZE

At the end, the image is going to be 150 Mb. 
Is there any experiance out there with this size of image to transfer?
Is there a way to convice pxelinux to use another (bigger) blocksize?

Any help is apreciated

  Martin