INT E0 - ConcCP/M,DR Multiuser DOS - "C_ATTACH" - ATTACH TO DEFAULT CONSOLE

	CL = 92h
Return: AX = status
Notes:	also supported by REAL/32
	if the console is currently owned by another process, this function
	  waits until the console is available
SeeAlso: INT E0/CL=93h,INT E0/CL=94h,INT E0/CL=99h,INT E0/CL=9Eh,INT E0/CL=A2h