no, i use set these options : VGA_CONSOLE = 0 PC_KEYBOARD = 0
this is ok, the same problem of peter fox. I used the modified timer.c for filo (don't use rdtsc in filo because it's a 486) and now it works.
if someone need it, i join it.
is your filo trying to use VGA? make sure that it is only trying to use the serial port.
ron