)
Values PCMCIA callback routine is invoked with:
	AL = adapter number
	BH = status change interrupt enable mask (see #00658)
	BL = socket number
	DH = current socket status (see #00659)
	DL = current card status (see #00660)
Return: all registers preserved
Notes:	the callback may be invoked during a hardware interrupt, and may not
	  call on Socket Services
	the callback will be invoked once for each socket with a status change