On 17/04/14 15:24, Peter Pickford wrote: > values to tried all seem to work > 0x01 enable fifos only (this is probably enough) I've pushed a change with the minimal fix of just enabling the FIFOs: http://git.ipxe.org/ipxe.git/commitdiff/d644ad4 Please let me know if there are still problems with escape sequences via the serial port. Michael