I have a related problem in that I am tying to boot netbsd
	onto an XL266.

	For what its worth, you might find something useful at
	ftp://ftp.digital.com/pub/Digital/info/semiconductor/literature/
	dsc-library.html#alpha

	I looked at the data sheet for pc164 and there are in fact
	three different motherboards, one of which supports SRM.

	good luck