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.
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.
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")
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:
convert to hex
ad 2000000 hex.
The standard alternate address is 17774460. ==> 14460 ==> 0x1930 ==> 20001930