Following is an ASCII representation of	one of the slots:

				x y z	 C B A
				o-o o 32 . . .
				o-o o 31 . . .
				o-o o 30 . . .
				o-o o 29 . . .
				      28 . . .

					   . 
					   . 
					   . 

				       3 . . .
				       2 . . .
				       1 . . .

	where x, y, and z are labeled GND, SID, and VCC, respectively.  The
	GND, SID, and VCC "holes" are used to configure the slot number using
	simple binary encoding, where GND is logical zero, VCC is logical one,
	and SID determines the current bit state (one or zero).  From the
	diagram above, you'll notice that there are 4 rows of GND, SID, VCC
	triads; each row is equivalent to one bit position in the slot number,
	the bottom row being bit position 0 and the top row bit position 3.
	This gives a total of four bit positions, or 16 possible slot numbers.
	To encode a slot number, all that is required is to connect an SID
	row to its corresponding GND or VCC row.  For example, the diagram
	below shows the configuration of the slots in my cube's back-plane:

		SLOT #6		SLOT #2		SLOT #0		SLOT #4
	BIT 3:	o-o o		o-o o		o-o o		o-o o
	BIT 2:	o o-o		o-o o		o-o o		o o-o
	BIT 1:	o o-o		o o-o		o-o o		o-o o
	BIT 0:	o-o o		o-o o		o-o o		o-o o

	(you'll have to look very closely to see the connection between the
	 "holes").

	Now to continue with the procedure: