[syslinux] USB keyboard problem

[Ricardo Santos]

When using the latest pxelinux my usb keyboard doesn't work (within the
menu).

If I use the pxelinux build 074 the keyboard works (without menu), but
this version doesn't recognize the default menu.c32 directive.

How can have both things working: or the usb keyboard working uder the
latest pxelinux (under the menu.c32) , or the menu working in the build
074?

Ricardo