Category: DOS-based task switchers/multitaskers

INT 21 - DoubleDOS - SET TIMESHARING PRIORITY

	AH = E9h
	AL = new priority (see #02089)
Return: AL = priority setting if AL=05h on entry
Note:	identical to AH=F9h
SeeAlso: AH=EAh"DoubleDOS",AH=EBh"DoubleDOS",AH=F9h"DoubleDOS"