Category: DOS-based task switchers/multitaskers
Flags: Undocumented function

INT 16 - PC Tools v8+ CPTASK - SET ???

	AX = FF80h
	BX = 0004h
	CX = new value of ???
Return: ???
Note:	this function also sets bit 14 of the flags word returned by
	  AX=FF80h/BX=0003h