From the PDP-11 Diagnostic Handbook (1988), p. 1-6:
11/70 CPU DIAGNOSTIC PART 1 ABSTRACT: This diagnostic is the first part of the 11/70 CPU, it designed to detect and report logic faults in the CPU. Any fault detected in this program causes the program to "HALT". After this, run the second part of the CPU test, EKBBF0. OPERATING PROCEDURES: Set the switch register by <CONTROL P> (RD console) CON = xxxxxxWZ (W = deposit xxxxxx into console switch register) (R = read and type console switch settings) (Z = switch console terminal back to program) .R EKBAD0 SWITCH SETTINGS SW15 = 1 halt on error SW14 = 1 loop on test SW13 = 1 inhibit error typeouts SW12 = 1 inhibit T-bit trapping SW11 = 1 inhibit iterations SW10 = 1 ring bell on error SW09 = 1 loop on error SW08 = 1 loop on test in SWR <07:00> SW07 = 1 not used SW06 = 1 skip bus request 6 test SW05 = 1 skip bus request 5 test SW04 = 1 skip bus request 4 test SW00 = 1 skip operator intervention testing
PRODUCT CODE: AC-7962D-MC PRODUCT NAME: CEKBAD0 11/70 CPU #1 DATE CREATED: MAY, 1980 MAINTAINER: DIAGNOSTIC ENGINEERING
Step-by-step instructions for running EKBAD0 can be found below.
[PCjs Machine "test1170"]
Waiting for machine "test1170" to load....
Loadto load the disk
Loaded disk "XXDP+ Diagnostics" in drive RL0
Bootto boot the disk
.prompt and then type
R EKBAD0and press Return
To automatically perform all of the above, click this button: