165 lines
7.6 KiB
Plaintext
165 lines
7.6 KiB
Plaintext
# Copyright: Public domain.
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# Filename: MAIN.agc
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# Purpose: The main source file for Luminary 1A, revision 099.
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# It is part of the source code for the Lunar Module's (LM)
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# Apollo Guidance Computer (AGC) for Apollo 11.
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# Assembler: yaYUL
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# Contact: Ron Burkey <info@sandroid.org>.
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# Website: www.ibiblio.org/apollo/index.html
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# Mod history: 2009-05-05 RSB Adapted from Luminary131/MAIN.agc.
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#
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# The contents of the "Luminary099" files, in general, are
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# transcribed from a digital images created from a hardcopy of the program
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# residing at the MIT Museum. Many thanks to Debbie Douglas of the Museum,
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# and to Paul Fjeld (who made the images).
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#
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# Notations on this document read, in part:
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#
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# ASSEMBLE REVISION 001 OF AGC PROGRAM LMY99 BY NASA 2021112-061
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# 16:27 JULY 14,1969
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# [Note that this is the date the hardcopy was made, not the
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# date of the program revision or the assembly.]
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# ...
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# THIS LGC PROGRAM IS INTENDED FOR USE IN THE LM DURING THE MANNED
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# LUNAR LANDING MISSION OR ANY SUBSET THEREOF.
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# ...
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#
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# The page images themselves, as reduced in size (and consequently in
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# quality) to be suitable for online presentation, are available at
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# http://www.ibiblio.org/apollo. If you want to see the (much) higher
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# quality digital images that Paul actually made, contact info@sandroi.org
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# directly.
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#
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# This file is a little different from the other Luminary099 files I'm providing,
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# in that it doesn't represent anything that appears directly in the original source.
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# What I (RSB) have done for organizational purposes is to split the huge monolithic
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# source code into smaller, more manageable chunks--i.e., into individual source
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# files. Those files are rejoined within this file as "includes". It just makes
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# it a little easier to work with. The code chunks correspond to natural divisions
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# into sub-programs. In fact, these divisions are more-or-less specified by
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# the source code itself. Refer to the "TABLE OF SUBROUTINE LOG SECTIONS" at the
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# very beginning of the file ASSEMBLY_AND_OPERATION_INFORMATION.agc.
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#
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# It may be reasonably asked why tens of thousands of lines of source are joined by
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# means of inclusion, rather than simply assembling the source files individually and
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# then linking them to form the executable. The answer is that the original
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# development team had no linker. The builds were monolithic just like this.
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# There was a big emphasis on reusability of the code in the original project,
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# apparently, but this reusability took the form of inserting your deck of
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# punch-cards at the appropriate position in somebody else's deck of punch-cards.
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# (Actually, I believe a tape-library method was used to avoid having to continually
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# reload the card decks, but that doesn't change the basic principle.)
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# So, indeed, the method of file-inclusion is a very fair representation of the
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# methods used in the original development ... with the improvement, of course,
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# that you no longer have to worry about dropping the card deck. On the other hand,
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# I wasn't there at the time, so I may have no idea what I'm talking about.
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#
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# Finally, note that the original Apollo AGC assembler (called "YUL") is no longer
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# available (as far as I can tell). In fact, it was replaced by another assembler
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# ("GAP") even before Apollo 11, but GAP is no more available than is YUL. The
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# replacement assembler yaYUL accepts a slightly different format for the source
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# code from what YUL or GAP accepted, so the source code has been targeted for
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# assembly with yaYUL.
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# What follows is simply a bunch of file-includes for the individual code chunks.
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# I've marked the page numbers to make proof-reading easier. Besides, the digital
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# images of the assembly listing contains a lot of interesting tables (cross-
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# referenced to page numbers) created by GAP, but not duplicated by yaYUL, so it's
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# still valuable even if the source-files listed below are at hand.
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$ASSEMBLY_AND_OPERATION_INFORMATION.agc # pp. 1-27
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$TAGS_FOR_RELATIVE_SETLOC.agc # pp. 28-37
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$CONTROLLED_CONSTANTS.agc # pp. 38-53
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$INPUT_OUTPUT_CHANNEL_BIT_DESCRIPTIONS.agc # pp. 54-60
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$FLAGWORD_ASSIGNMENTS.agc # pp. 61-88
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# p. 89 is a GAP-generated table
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$ERASABLE_ASSIGNMENTS.agc # pp. 90-152
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$INTERRUPT_LEAD_INS.agc # pp. 153-154
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$T4RUPT_PROGRAM.agc # pp. 155-189
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$RCS_FAILURE_MONITOR.agc # pp. 190-192
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$DOWNLINK_LISTS.agc # pp. 193-205
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$AGS_INITIALIZATION.agc # pp. 206-210
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$FRESH_START_AND_RESTART.agc # pp. 211-237
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$RESTART_TABLES.agc # pp. 238-243
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$AOTMARK.agc # pp. 244-261
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$EXTENDED_VERBS.agc # pp. 262-300
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$PINBALL_NOUN_TABLES.agc # pp. 301-319
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$LEM_GEOMETRY.agc # pp. 320-325
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$IMU_COMPENSATION_PACKAGE.agc # pp. 326-337
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$R63.agc # pp. 338-341
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$ATTITUDE_MANEUVER_ROUTINE.agc # pp. 342-363
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$GIMBAL_LOCK_AVOIDANCE.agc # p. 364
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$KALCMANU_STEERING.agc # pp. 365-369
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$SYSTEM_TEST_STANDARD_LEAD_INS.agc # pp. 370-372
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$IMU_PERFORMANCE_TEST_2.agc # pp. 373-381
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$IMU_PERFORMANCE_TESTS_4.agc # pp. 382-389
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$PINBALL_GAME_BUTTONS_AND_LIGHTS.agc # pp. 390-471
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$R60_62.agc # pp. 472-485
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$S-BAND_ANTENNA_FOR_LM.agc # pp. 486-489
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$RADAR_LEADIN_ROUTINES.agc # pp. 490-491
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$P20-P25.agc # pp. 492-614
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$P30_P37.agc # pp. 615-617
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$P32-P35_P72-P75.agc # pp. 618-650
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$LAMBERT_AIMPOINT_GUIDANCE.agc # pp. 651-653
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$GROUND_TRACKING_DETERMINATION_PROGRAM.agc # pp. 654-657
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$P34-35_P74-75.agc # pp. 658-702
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$R31.agc # pp. 703-708
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$P76.agc # pp. 709-711
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$R30.agc # pp. 712-722
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$STABLE_ORBIT.agc # pp. 723-730
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$BURN_BABY_BURN--MASTER_IGNITION_ROUTINE.agc # pp. 731-751
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$P40-P47.agc # pp. 752-784
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$THE_LUNAR_LANDING.agc # pp. 785-792
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$THROTTLE_CONTROL_ROUTINES.agc # pp. 793-797
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$LUNAR_LANDING_GUIDANCE_EQUATIONS.agc # pp. 798-828
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$P70-P71.agc # pp. 829-837
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$P12.agc # pp. 838-842
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$ASCENT_GUIDANCE.agc # pp. 843-856
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$SERVICER.agc # pp. 857-897
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$LANDING_ANALOG_DISPLAYS.agc # pp. 898-907
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$FINDCDUW--GUIDAP_INTERFACE.agc # pp. 908-925
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$P51-P53.agc # pp. 926-983
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$LUNAR_AND_SOLAR_EPHEMERIDES_SUBROUTINES.agc # pp. 984-987
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$DOWN_TELEMETRY_PROGRAM.agc # pp. 988-997
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$INTER-BANK_COMMUNICATION.agc # pp. 998-1001
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$INTERPRETER.agc # pp. 1002-1094
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$FIXED_FIXED_CONSTANT_POOL.agc # pp. 1095-1099
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$INTERPRETIVE_CONSTANT.agc # pp. 1100-1101
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$SINGLE_PRECISION_SUBROUTINES.agc # p. 1102
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$EXECUTIVE.agc # pp. 1103-1116
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$WAITLIST.agc # pp. 1117-1132
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$LATITUDE_LONGITUDE_SUBROUTINES.agc # pp. 1133-1139
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$PLANETARY_INERTIAL_ORIENTATION.agc # pp. 1140-1148
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$MEASUREMENT_INCORPORATION.agc # pp. 1149-1158
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$CONIC_SUBROUTINES.agc # pp. 1159-1204
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$INTEGRATION_INITIALIZATION.agc # pp. 1205-1226
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$ORBITAL_INTEGRATION.agc # pp. 1227-1248
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$INFLIGHT_ALIGNMENT_ROUTINES.agc # pp. 1249-1258
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$POWERED_FLIGHT_SUBROUTINES.agc # pp. 1259-1267
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$TIME_OF_FREE_FALL.agc # pp. 1268-1283
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$AGC_BLOCK_TWO_SELF_CHECK.agc # pp. 1284-1293
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$PHASE_TABLE_MAINTENANCE.agc # pp. 1294-1302
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$RESTARTS_ROUTINE.agc # pp. 1303-1308
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$IMU_MODE_SWITCHING_ROUTINES.agc # pp. 1309-1337
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$KEYRUPT_UPRUPT.agc # pp. 1338-1340
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$DISPLAY_INTERFACE_ROUTINES.agc # pp. 1341-1373
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$SERVICE_ROUTINES.agc # pp. 1374-1380
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$ALARM_AND_ABORT.agc # pp. 1381-1385
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$UPDATE_PROGRAM.agc # pp. 1386-1396
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$RTB_OP_CODES.agc # pp. 1397-1402
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$T6-RUPT_PROGRAMS.agc # pp. 1403-1405
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$DAP_INTERFACE_SUBROUTINES.agc # pp. 1406-1409
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$DAPIDLER_PROGRAM.agc # pp. 1410-1420
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$P-AXIS_RCS_AUTOPILOT.agc # pp. 1421-1441
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$Q_R-AXIS_RCS_AUTOPILOT.agc # pp. 1442-1459
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$TJET_LAW.agc # pp. 1460-1469
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$KALMAN_FILTER.agc # pp. 1470-1471
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$TRIM_GIMBAL_CNTROL_SYSTEM.agc # pp. 1472-1484
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$AOSTASK_AND_AOSJOB.agc # pp. 1485-1506
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$SPS_BACK-UP_RCS_CONTROL.agc # pp. 1507-1510
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# pp. 1511-1743: GAP-generated tables.
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