53 lines
1.8 KiB
Markdown
53 lines
1.8 KiB
Markdown
---
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layout: page
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title: "EKBAD0: 11/70 MEMORY MANAGEMENT DIAGNOSTIC (PART 1)"
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permalink: /disks/dec/rl02k/xxdp/ekbad0/
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---
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EKBAD0: 11/70 CPU DIAGNOSTIC (PART 1)
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-------------------------------------
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From the
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[PDP-11 Diagnostic Handbook (1988)](http://archive.pcjs.org/pubs/dec/pdp11/diags/PDP11_DiagnosticHandbook_1988.pdf),
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p. 1-6:
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11/70 CPU DIAGNOSTIC PART 1
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ABSTRACT:
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This diagnostic is the first part of the 11/70 CPU, it designed to detect and
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report logic faults in the CPU. Any fault detected in this program causes the
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program to "HALT". After this, run the second part of the CPU test, EKBBF0.
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OPERATING PROCEDURES:
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Set the switch register by <CONTROL P> (RD console)
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CON = xxxxxxWZ
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(W = deposit xxxxxx into console switch register)
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(R = read and type console switch settings)
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(Z = switch console terminal back to program)
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.R EKBAD0
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SWITCH SETTINGS
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SW15 = 1 halt on error
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SW14 = 1 loop on test
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SW13 = 1 inhibit error typeouts
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SW12 = 1 inhibit T-bit trapping
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SW11 = 1 inhibit iterations
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SW10 = 1 ring bell on error
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SW09 = 1 loop on error
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SW08 = 1 loop on test in SWR <07:00>
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SW07 = 1 not used
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SW06 = 1 skip bus request 6 test
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SW05 = 1 skip bus request 5 test
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SW04 = 1 skip bus request 4 test
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SW00 = 1 skip operator intervention testing
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The closest we have to a source code listing of the EKBAD0 diagnostic comes from some
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[scanned microfiche](http://archive.pcjs.org/pubs/dec/pdp11/diags/AH-7963D-MC_CEKBAD0_1170_CPU_1_May80.pdf)
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on [bitsavers.org](http://bitsavers.trailing-edge.com/pdf/dec/pdp11/microfiche/ftp.j-hoppe.de/bw/gh/) for:
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PRODUCT CODE: AC-7962D-MC
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PRODUCT NAME: CEKBAD0 11/70 CPU #1
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DATE CREATED: MAY, 1980
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MAINTAINER: DIAGNOSTIC ENGINEERING
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