[syslinux] Is this a problem with pxelinux or a Soekris bios?

[harakopr at iem.pw.edu.pl]

 Hello,

 Recently I have discovered a problem with serial console output when 
 net-booting a Soekris net5501 board via pxe. When using pxelinux.0 from 
 syslinux 4.04 package I get only 15 characters from the output, then the 
 carriage returns back to the same line over and over again, making it 
 impossible to read the output. What is more the booting process (trying 
 configuration files with hardware address and ip addresses as names) is 
 very slow. When it boots up a linux kernel the console output becomes 
 fine.
 When I was looking for the solution for this I found the link for the 
 old version (2.06) of pxelinux.0, patched to work well with Soekirs 
 boards: http://centerclick.org/net4801/pxelinux
 Is this a bug in the pxelinux.0 package or in Soekris boards? Is there 
 any possibility to patch recent versions of pxelinux with similar patch?

 Regards,
 Rafał