pcjs/disks/dec/rl02k/xxdp/ekbad0

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EKBAD0: 11/70 CPU DIAGNOSTIC (PART 1)

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

The closest we have to a source code listing of the EKBAD0 diagnostic comes from some scanned microfiche on bitsavers.org for:

PRODUCT CODE: AC-7962D-MC
PRODUCT NAME: CEKBAD0 11/70 CPU #1
DATE CREATED: MAY, 1980
MAINTAINER:   DIAGNOSTIC ENGINEERING