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You only have three jumpers on a DEQNA.

					In		Out
W1	I/O Page Address		17774440	17774460
W2	BDMR Holdoff Timer		No Delay	5 uS Delay
W3	Sanity Timer at Initialization	Disabled	Enabled

On the DELQA there are 5 switches.

As shipped, all 5 DIP switches are closed. This means that the board is at CSR 17774440 (first interface), operating in normal mode, with triggered MOP remote boot disabled.

Switch 1 controls the CSR: closed is first interface, open is second interface, at CSR 17774460.

Switch 2 is reserved.

Switch 3 controls the emulation: closed is normal (DELQA) mode, open is DEQNA-lock mode.

Switch 4 controls triggered MOP remote boot in normal mode, automatic sanity timer start in DEQNA-lock mode. In both cases, the facility in question is disabled when switch 4 is closed, enabled when it is open.

Switch 5 is reserved.

Pinouts

Here's a pinout for a DELQA.

DELQA: IDC connector, 12 pin by 2 pin:

(NC) (PUR) (DK BRN) (NC)  (BLU) (SHIELD) (ORG) (NC)  (WHI) (BLK) (PLUGGED) (NC)
(NC) (BRN) (NC)     (GRN) (NC)  (YEL)    (NC)  (GRY) (NC)  (NC) (RED)      (NC)

The RED lead goes to a 1.5 amp, 25 V, slow blow fuse, that then goes to the DB15 connector.

DB15 connector:

PIN	COLOUR
1	NC
2	BLU
3	ORG
4	SHIELD
5	WHI
6	BLK
7	DK BRN
8	NC
9	GRN
10	YEL
11	NC
12	GRY
13	RED (FROM FUSE)
14	NC
15	BRN

("NC" means "not connected")

Reading the ethernet address

The DEQNA is usually at 17774440 octal. You can read the ethernet address here. If yours is there, do the following: I'll give you an example from one of mine. My MAC address is 08002B029707 (0800 indicates DEC MFR)

FRESH INIT

>>> e/p 20001920
    p  20001920  FF00FF08
>>> e
    p  20001924  FF02FF2B
>>> e
    p  20001928  FF07FF97

Ignore the FF's

Read the complete bytes from right to left staring at 1920:

FF00FF08 becomes  0800
FF02FF2B becomes  2B02
FF07FF97 becomes  9707

There you have the hardware address encoded in PROM!1

To convert a device from octal (PDP qbus) to HEX MVII Qbus) do the following:

subtract 17760000
convert to hex
ad 2000000 hex.

The standard alternate address is 17774460. ==> 14460 ==> 0x1930 ==> 20001930

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