Editing Expanded memory (section)

===Device drivers===
An expanded-memory board, being a hardware peripheral, needed a software [[device driver]], which exported its services. Such a device driver was called '''expanded-memory manager'''. Its name was variable; the previously mentioned boards used REMM.SYS (AST), PS2EMM.SYS (IBM), AEMM.SYS (AT&T) and EMM.SYS (Intel) respectively. Later, the expression became associated with software-only solutions requiring the [[Intel 80386]] processor, for example [[Quarterdeck Office Systems|Quarterdeck]]'s [[QEMM]], [[Qualitas]]' [[386MAX|386<sup>MAX</sup>]] or the default [[EMM386]] in MS-DOS, PC&nbsp;DOS and DR-DOS.