Made some progress with DEC's "TRAP TEST", but looks like it still needs some work
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Jeff
Jeff Parsons
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24 changed files with 1252 additions and 555 deletions
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@ -7,32 +7,36 @@ permalink: /apps/pdp11/tapes/diags/
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Diagnostic Paper Tape Images
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----------------------------
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Thanks to the [iamvirtual.ca](http://iamvirtual.ca/collection/systems/mediadoc/mediadoc.html#papertape) website,
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we have archived a number of PDP-11 diagnostics:
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Thanks to the [iamvirtual.ca](http://iamvirtual.ca/collection/systems/mediadoc/mediadoc.html#papertape)
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website, we have archived the PDP-11 diagnostics shown below. The tapes have been added to the
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[Default PC11 Configuration](/devices/pdp11/pc11/), so that you can easily load them into any machine with a
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[PC11](/modules/pdp11/lib/pc11.js), such as this [PDP-11/20](/devices/pdp11/machine/1120/panel/debugger/).
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As noted for other [DEC PDP-11 Tape Images](/apps/pdp11/tapes/), these "Absolute Format" tapes can be loaded directly
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into RAM using the machine's "Load" button instead of "Attach", allowing you to bypass the usual three-step process of
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loading the [Bootstrap Loader](/apps/pdp11/boot/bootstrap/) in order to load the [Absolute Loader](/apps/pdp11/tapes/absloader/)
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in order to load the desired tape.
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The above tapes have been added to the [Default PC11 Configuration](/devices/pdp11/pc11/), so that you can load
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them in machines such as this [PDP-11/70](/devices/pdp11/machine/1170/panel/debugger/).
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As noted for other [DEC PDP-11 Tape Images](/apps/pdp11/tapes/), any "Absolute Format" tape (which should include
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all the tapes listed above) can be loaded directly into RAM using the machine's "Load" button instead of "Attach".
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In most cases, this eliminates the first two steps.
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Instructions for Running Diagnostics
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------------------------------------
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### Tests 1-12
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Instructions for running "TEST 1 - BRANCH" through "TEST 12 - JUMP" come from the
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[MAINDEC USER REFERENCE MANUAL, OCTOBER 1973](http://archive.pcjs.org/pubs/dec/pdp11/diags/MAINDEC_User_Reference_Manual_Oct73.pdf),
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p. 19:
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@ -43,27 +47,29 @@ p. 19:
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ABSTRACT
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This is a group of 12 tests that incrementally test and isolate simple malfunctions of
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the PDP-11. The tests should be run in the indicated numerical sequence. The sequence is:
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This is a group of 12 tests that incrementally test and isolate simple
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malfunctions of the PDP-11. The tests should be run in the indicated
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numerical sequence. The sequence is:
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1. Branch
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2. Conditional Branch
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3. Unary
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4. Unary and Binarys
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5. Rotate/Shift
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6. Compare (Equality)
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7. Compare (non equality)
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8. Move
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9. Bit Set, Clear and Test
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10. Add
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11. Subtract
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12. Jump
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1. Branch
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2. Conditional Branch
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3. Unary
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4. Unary and Binarys
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5. Rotate/Shift
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6. Compare (Equality)
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7. Compare (non equality)
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8. Move
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9. Bit Set, Clear and Test
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10. Add
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11. Subtract
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12. Jump
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REQUIREMENTS
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PDP-11
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STORAGE - Use all of 4K [words] except 17500 - 17776 (Reserved for boot and absolute loader)
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STORAGE - Use all of 4K [words] except 17500 - 17776 (Reserved for boot and
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absolute loader)
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LOADING - Absolute Loader
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@ -73,7 +79,7 @@ p. 19:
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PRINTOUTS - No
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SWITCH REGISTER OPTIONS = No
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SWITCH REGISTER OPTIONS - No
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The code for "TEST 1 - BRANCH" is not terribly exciting. Most of its 8Kb length is filled with these
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three repeated instructions:
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@ -97,6 +103,74 @@ character (with bit 7 set; I'm not sure why) to the machine's display terminal,
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BR instruction fails to branch for some strange reason, then in theory, the machine will fall through to a HALT
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instruction, and the test will halt.
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### Test 13
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MAINDEC-11-D0MA (NEW NUMBER - DZKAM)
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T13
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ABSTRACT
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This is a test of the JSR, RTS and RTI instructions. It is also the
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first time the Register 6 has been "PUSHED and POPPED".
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REQUIREMENTS
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PDP-11
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STORAGE - 0 - 5000
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LOADING - Absolute Loader
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EXECUTION TIME - 2 min - Bell will ring
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STARTING PROCEDURE - Start and Restart at 200
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PRINTOUTS - No
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SWITCH REGISTER OPTIONS - No
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### Test 14
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Note that, as the instructions indicate, this test will fail on a PDP-11/45 or newer machine, because
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it expects the MUL instruction to trap.
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MAINDEC-11-D0NA (NEW NUMBER - DAKAA)
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T14 TRAPS
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ABSTRACT
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This is a test of all operation and instruction that cause traps.
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Also tested are trap overflow conditions, oddities of register 6,
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interrupts and the reset instructions.
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REQUIREMENTS
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PDP-11/20, 11/05, 11/10
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STORAGE - 0 - 17500
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LOADING - Absolute Loader
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EXECUTION TIME - Function or core size - Bell will ring
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STARTING PROCEDURE
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Start and Restart at 200 for a 4K System
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202 for an 8K System
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204 for a 12K System
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206 for a 16K System
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210 for a 20K System
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212 for a 24K System
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214 for a 28K System
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PRINTOUTS - No
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SWITCH REGISTER OPTIONS - No
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This program should not be used to test 11/40 and 11/45's.
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Newer Paper Tape Software (mid-1970s)
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-------------------------------------
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