Laser Turbo XT turbo mode switch?

I have a Laser Turbo XT that I'm trying to resuscitate to 100%. I have it almost all working, but I'd be durned if I can't figure out how to get it into turbo mode. Right now it's blazing along at 1.4Mhz if the Landmark speed test is to be believed. There are no hardware switches so I can only assume there is some sort of utility program that needs to be run? If so, I don't have it :( Any hints? Thanks! Happy New Year! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]