mcm@peach.ucsb.edu (Marcelo Mourier) (07/11/90)
Hello everybody! I need to know how to unmask the address line A20 in a PC AT so that it's no longer tied low by the hardware. I know it is done by writing into the i8240's parallel port, but I don't know the exact procedure. If anybody can help me, please send me private email. Thanks! mcm@cs.ucsb.edu