[comp.sys.ibm.pc] Using Extended Memory without deref

brown@m.cs.uiuc.edu (05/28/89)

>XMS 2.0 also formally makes the first 64K of extended memory available as a    
>non protected mode memory resource using the overflow into A20 trick.          

    What is the "overflow into A20 trick?"


	William Brown
	brown@cs.uiuc.edu