dup:	DUP11-DA synchronous line interface (Digital)
	csr: csr off		3 4 5 6 7 8 9 10 11 12
	vec: vec		8 7 6 5 4 3 - -

dz:	DZ11-A/B/E asynchronous multiplexor [EIA] (Digital)
	csr (e81): csr		3 4 5 6 7 8 9 10 11 12
	vec (e11): vec off	- 3 4 5 6 7 8 -

dz.c:	CDZ-11 pseudo-DZ11-A/B/E (Computer Interface Technology)
	csr (d3): csr		3 4 5 6 7 8 9 10 11 12
	vec (b2): vec		8 7 6 5 4 3 -

dz.s:	SCD-DZ11 pseudo-DZ11-A/B/E (Sigma Information Systems)
	csr (s1): csr		3 4 5 6 7 8 9 10 11 12
	vec (s2): vec off	+ - 3 4 5 6 7 8

si9400:	9400 disk controller CPA (System Industries)
	csr (2b): csr off	- 12 11 10 9 8 7 6
	vec (5j): vec off	- 7 6 5 4 3 2 1

kmc:	KMC11-A general purpose microprocessor (Digital)
	csr (e116): csr off	3 4 5 6 7 8 9 10 11 12
	vec (e65): vec		3 4 5 6 7 8 - -

drw:	DR11-W general purpose parallel interface (Digital)
	csr (e120): csr off	12 11 10 9 8 7 6 5 4 3
	vec (e15): vec off	- 2 3 4 5 6 7 8
	mode (e10):		+ 0 0 0 +

lp.x:	XYLOGIC LPI line printer controller
	csr0 (d5): csr off	- 9 - 10 12 11
	csr1 (d6): csr off	8 3 7 4 6 5
	vec (h4): vec off	1 4 5 3 6 2 7

lp.d:	DATASYSTEMS DLP-11 line printer controller
	csr0 (4c): csr off	+ 2 3 4 0 2 3 4 5 6
	csr1 (4d): csr off	7 8 9 10 11 12 13 14 15 0
	vec (4h): vec off	+ 1 2 3 4 5 6 7

dh:	DH11 half and options for DH/DM (ABLE)
	dh csr (s2): csr off	+ 4 5 6 7 8 9 10
	dh vec (s5): vec	+ 0 3 4 5 6 7 8
	extb (s3):		+ + 0 + + + 0 0
	misc (s4):		+ 0 0 0 0 0 0 0

dm:	DM11-BB half of DH/DM (ABLE)
	dm csr (s1): csr off	+ 4 5 6 7 8 + +
	dm vec (s6): vec	0 2 3 4 5 6 7 8

dn:	Quadracall pseudo-DN11 (ABLE)
	csr (s1): csr off	3 4 5 6 7 8 9 10 11 12
	vec (s2): vec off	- 2 3 4 5 6 7 8