[syslinux] Chaining from PXELinux to some other boot loader

[behrad at rayavaran.com]

Hi

I am using PXELinux to boot BartPE and some other application and it works fine. There are some other Boot application which I am using 3COM MBAUTIL PXE.mnu and floppy images. I have problem chaining from pxelinux.0 to 3com pxe.0 (pxe.mnu).

Consider:

BIOS->(DHCP-TFTP)->pxelinux.0 works fine.
BIOS->(DHCP-TFTP)->3COM pxe.mnu works fine, the menu appears and I can choose a floppy image.
BIOS->(DHCP-TFTP)->pxelinix.0->(choose from menu, KERNEL pxe.0 APPEND keeppxe)->3COM pxe.mnu has some problem. The initial 3COM menu appears but when I choose a floppy image it hangs.

I have said about this problem before and I am sorry that I insist but I think there is some problem in pxelinux.0 which if solved maybe other problem in chaining other kernels may clear too. 

The problem may be like:
1) KeepPXE is not working fine
2) PXELinux.0 is loaded in a memory offset, the it loads the other kernel (3com pxe.mnu) in another memory location and 3COM pxe.mny maybe memory location dependant. Is there any way to replace pxelinux.0 by pxe.mnu in the memory as if pxe.mnu is loaded in the first step?

Behrad