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Updated information on 11/70 CPU EXERCISER

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Jeff Parsons 2016-12-23 13:15:33 -08:00 • committed by Jeff Parsons
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13
apps/pdp11/tapes/diags/README.md
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@ -44,7 +44,7 @@ Running Paper Tape Diagnostics
Instructions for running "TEST 1 - BRANCH" through "TEST 12 - JUMP" come from the
[MAINDEC-11-DZQAB MAINDEC USER REFERENCE MANUAL (Oct 1973)](http://archive.pcjs.org/pubs/dec/pdp11/diags/MAINDEC-11-DZQAB-B-D_User_Reference_Manual_Oct73.pdf),
p. 19:
page 19:
MAINDEC-11-D0AA to D0LA (NEW NUMBER - DZKAA to DZKAL)
@ -250,7 +250,7 @@ so for now, I'm just going to pick out selected tapes and archive them here.
From [bitsavers.org](http://bitsavers.trailing-edge.com/bits/DEC/pdp11/papertapeimages/20040101/), Tray 02:
* Tape 04: [MAINDEC-11-DEQKC-B1-PB 06/12/78; 11/70 cpu instruction exerciser; (c)1975,76](#md-11-1170-cpu-exerciser)
* Tape 04: [MAINDEC-11-DEQKC-B1-PB 06/12/78; 11/70 cpu instruction exerciser; (c)1975,76](#md-11-1170-cpu-exerciser) [[1980 Listing](http://bitsavers.org/pdf/dec/pdp11/microfiche/ftp.j-hoppe.de/bw/gh/AH-7996E-MC__PDP11-70-74__11-70_INST_EXR__CEQKCE0__%28C%2975,80.pdf)]
MD-11 11/70 CPU EXERCISER
-------------------------
@ -336,7 +336,7 @@ I disassembled the code responsible for that failure:
I wasn't able to locate a source code listing for this particular (1978) version of the 11/70 CPU Instruction Exerciser,
but I did find another useful document,
[MAINDEC-11-DCQKC 11/40 and 11/45 INSTRUCTION EXERCISER (Sep 1974)](http://archive.pcjs.org/pubs/dec/pdp11/diags/MAINDEC-11-DCQKC-D-D_1140_1145_INSTRUCTION_EXERCISER_Sep74.pdf),
where I discovered a matching test sequence on p. 86.
where I discovered a matching test sequence on page 86.
Here's an excerpt:
@ -373,6 +373,13 @@ to trap when SP is 150. That contradicts this newer test (ie, that TST should n
trap "BECAUSE TST IS A NON MODIFYING INST"). For this and other reasons, PDPjs now installs different
checkStackLimit() handlers based on the CPU model.
UPDATE: Another (1980) version of the source code for the 11/70 CPU EXERCISER diagnostic has been located and archived
with the rest of our [DEC PDP-11 Diagnostic Publications](/pubs/dec/pdp11/diags/):
- [CEQKCE0 11/70 INSTRUCTION EXERCISER (May 1980)](http://archive.pcjs.org/pubs/dec/pdp11/diags/AC-7994E-MC_CEQKCE0_1170_INSTRUCTION_EXERCISER_May80.pdf) [[Original PDF](http://bitsavers.org/pdf/dec/pdp11/microfiche/ftp.j-hoppe.de/bw/gh/AH-7996E-MC__PDP11-70-74__11-70_INST_EXR__CEQKCE0__%28C%2975,80.pdf)]
You'll find the above excerpt on page 114, at address 024624.
---
Here's the next test that PDPjs failed. Again, I found the same sequence of instructions in the 11/40 and 11/45