Source Code

These source-code files derive from a printout of Luminary 116 (the Apollo 12 Lunar Module guidance computer program), from the personal library of original AGC developer Don Eyles, digitally photographed at archive.org, financially sponsored by Ron Burkey, and transcribed to source code by a team of volunteers. This colorized, syntax-highlighted form was created by assembling that transcribed source code. Note that the full page images are available on the Virtual AGC project page at archive.org, while reduced-size images are presented at the VirtualAGC project website. Report or fix any transcription errors at the Virtual AGC project code repository.

Notations on the program listing read, in part:

	GAP:  ASSEMBLE REVISION 116 OF AGC PROGRAM LUMINARY BY NASA 2021112-071
	19:09 AUG. 11,1969
Note that the date is the date of the printout, not the date of the program revision.

016081,000002:                                                                                                  ## Copyright:   Public domain.
016082,000003:                                                                                                  ## Filename:    IMU_PERFORMANCE_TESTS_4.agc
016083,000004:                                                                                                  ## Purpose:     A section of Luminary revision 116.
016084,000005:                                                                                                  ##              It is part of the source code for the Lunar Module's (LM) 
016085,000006:                                                                                                  ##              Apollo Guidance Computer (AGC) for Apollo 12.
016086,000007:                                                                                                  ##              This file is intended to be a faithful transcription, except
016087,000008:                                                                                                  ##              that the code format has been changed to conform to the
016088,000009:                                                                                                  ##              requirements of the yaYUL assembler rather than the
016089,000010:                                                                                                  ##              original YUL assembler.
016090,000011:                                                                                                  ## Reference:   pp. 383-390
016091,000012:                                                                                                  ## Assembler:   yaYUL
016092,000013:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
016093,000014:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
016094,000015:                                                                                                  ## Mod history: 2017-01-22 MAS  Created from Luminary 99.
016095,000016:                                                                                                  ##              2017-03-07 RSB  Transcribed, and then proofed comment-text using
016096,000017:                                                                                                  ##                              3-way diff vs Luminary 99 and Luminary 131.
016097,000018:                                                                                                  ##                              (Admittedly, the former is more for detecting errors
016098,000019:                                                                                                  ##                              in Luminary 99 than the other way around.)
016099,000020: 

Page 383

016101,000022:                                                                                                  #  PROGRAM -     IMU PERFORMANCE TESTS 4
016102,000023:                                                                                                  #  DATE -        NOV 15, 1966
016103,000024:                                                                                                  #  BY -          GEORGE SCHMIDT IL7-146 EXT 1126
016104,000025:                                                                                                  #  MOD NO-ZERO
016105,000026: 
016106,000027:                                                                                                  #  FUNCTIONAL DESCRIPTION
016107,000028: 
016108,000029:                                                                                                  #  THIS SECTION CONSISTS OF THE FILTER FOR THE GYRO DRIFT TESTS.  NO COMPASS
016109,000030:                                                                                                  #  IS DONE IN LEM.  FOR A DESCRIPTION OF THE FILTER SEE E-1973.  THIS
016110,000031:                                                                                                  #  SECTION IS ENTERED FROM IMU 2.  IT RETURNS THERE AT END OF TEST.
016111,000032: 
016112,000033:                                                                                                  #  EARTHR,OGC ZERO,ERTHRVSE
016113,000034: 
016114,000035:                                                                                                  #  NORMAL EXIT
016115,000036: 
016116,000037:                                                                                                  #  LENGTHOT GOES TO ZERO - RETURN TO IMU PERF TESTS 2 CONTROL
016117,000038: 
016118,000039:                                                                                                  #  ALARMS
016119,000040: 
016120,000041:                                                                                                  #  1600  OVERFLOW IN DRIFT TEST
016121,000042:                                                                                                  #  1601  BAD IMU MODING IN ANY ROUTINE THAT USES IMUSTALL
016122,000043:                                                                                                  #  OUTPUT
016123,000044: 
016124,000045:                                                                                                  #  FLASHING DISPLAY OF RESULTS - CONTROLLED IN IMU PERF TESTS 2
016125,000046: 
016126,000047:                                                                                                  #  DEBRIS
016127,000048: 
016128,000049:                                                                                                  #  ALL CENTRALS - ALL OF EBANK XSM
016129,000050: 

Page 384

016131,000052: 33,2045                                           BANK     33                                    
016132,000053: 37,2000                                           SETLOC   IMU4                                  
016133,000054: 37,2000                                           BANK                                           
016134,000055: 37,2500                                           COUNT*   $$/P07                                
016135,000056: 
016136,000057: 37,2500  E5,1642                                  EBANK=   XSM                                   
016137,000058: 
016138,000059: 37,2500           00004        ESTIMS             INHINT                                         
016139,000060: 37,2501           31572                           CAE      1SECXT                                
016140,000061: 37,2502           05173                           TC       TWIDDLE                               
016141,000062: 37,2503  E5,1642                                  EBANK=   XSM                                   
016142,000063: 37,2503           02536                           ADRES    ALLOOP                                
016143,000064: 37,2504           34755                           CAF      ZERO                                  #  ZERO THE PIPAS
016144,000065: 37,2505           54037                           TS       PIPAX                                 
016145,000066: 37,2506           54040                           TS       PIPAY                                 
016146,000067: 37,2507           54041                           TS       PIPAZ                                 
016147,000068: 37,2510           00003                           RELINT                                         
016148,000069: 37,2511           33075                           CA       77DECML                               
016149,000070: 37,2512           55571                           TS       ZERONDX                               
016150,000071: 37,2513           33076                           CA       ALXXXZ                                
016151,000072: 37,2514           02367                           TC       ZEROING                               
016152,000073: 37,2515           06042                           TC       INTPRET                               
016153,000074: 37,2516           77735                           SLOAD                                          
016154,000075: 37,2517           37057                                    SCHZEROS                              
016155,000076: 37,2520           25477                           STOVL    GCOMPSW    -1                         
016156,000077: 37,2521           37070                                    INTVAL     +2                         
016157,000078: 37,2522           26445                           STOVL    ALX1S                                 
016158,000079: 37,2523           37057                                    SCHZEROS                              
016159,000080: 37,2524           00325                           STORE    DELVX                                 
016160,000081: 37,2525           01472                           STORE    GCOMP                                 
016161,000082: 37,2526           77735                           SLOAD                                          
016162,000083: 37,2527           02441                                    TORQNDX                               
016163,000084: 37,2530           50076                           DCOMP    BMN                                   
016164,000085: 37,2531           76534                                    VERTSKIP                              
016165,000086: 37,2532           77624                           CALL                                           
016166,000087: 37,2533           76401                                    ERTHRVSE                              
016167,000088: 37,2534           77776        VERTSKIP           EXIT                                           
016168,000089: 37,2535           03035                           TC       SLEEPIE    +1                         
016169,000090: 

Page 385

016171,000092: 37,2536           31576        ALLOOP             CA       OVFLOWCK                              
016172,000093: 37,2537           00006                           EXTEND                                         
016173,000094: 37,2540           12542                           BZF      +2                                    
016174,000095: 37,2541           05261                           TC       TASKOVER                              
016175,000096: 37,2542           11530                           CCS      ALTIM                                 
016176,000097: 37,2543           30000                           CA       A                                     #  SHOULD NEVER HIT THIS LOCATION
016177,000098: 37,2544           55531                           TS       ALTIMS                                
016178,000099: 37,2545           40000                           CS       A                                     
016179,000100: 37,2546           55530                           TS       ALTIM                                 
016180,000101: 37,2547           44753                           CS       ONE                                   
016181,000102: 37,2550           61562                           AD       GEOCOMPS                              
016182,000103: 37,2551           00006                           EXTEND                                         
016183,000104: 37,2552           12556                           BZF      +4                                    
016184,000105: 37,2553           31412                           CA       LENGTHOT                              
016185,000106: 37,2554           00006                           EXTEND                                         
016186,000107: 37,2555           62562                           BZMF     +5                                    
016187,000108: 37,2556           31572                           CAE      1SECXT                                
016188,000109: 37,2557           05173                           TC       TWIDDLE                               
016189,000110: 37,2560  E5,1642                                  EBANK=   XSM                                   
016190,000111: 37,2560           02536                           ADRES    ALLOOP                                
016191,000112: 37,2561           34755                           CAF      ZERO                                  
016192,000113: 37,2562           56037                           XCH      PIPAX                                 
016193,000114: 37,2563           54324                           TS       DELVX                                 
016194,000115: 37,2564           34755                           CAF      ZERO                                  
016195,000116: 37,2565           56040                           XCH      PIPAY                                 
016196,000117: 37,2566           54326                           TS       DELVY                                 
016197,000118: 37,2567           34755                           CAF      ZERO                                  
016198,000119: 37,2570           56041                           XCH      PIPAZ                                 
016199,000120: 37,2571           54330                           TS       DELVZ                                 
016200,000121: 37,2572           34736        SPECSTS            CAF      PRIO20                                
016201,000122: 37,2573           05105                           TC       FINDVAC                               
016202,000123: 37,2574  E5,1642                                  EBANK=   XSM                                   
016203,000124: 37,2574           02577 76065                     2CADR    ALFLT                                 #  START THE JOB
016204,000125: 
016205,000126: 37,2576           05261                           TC       TASKOVER                              
016206,000127: 

Page 386

016208,000129: 37,2577           11562        ALFLT              CCS      GEOCOMPS                              
016209,000130: 37,2600           02602                           TC       +2                                    
016210,000131: 37,2601           02604                           TC       NORMLOP                               
016211,000132: 37,2602           04616                           TC       BANKCALL                              
016212,000133: 37,2603           15271                           CADR     1/PIPA                                
016213,000134: 37,2604           06042        NORMLOP            TC       INTPRET                               
016214,000135: 37,2605           77745                           DLOAD                                          
016215,000136: 37,2606           37066                                    INTVAL                                
016216,000137: 37,2607           24051                           STOVL    S1                                    
016217,000138: 37,2610           00325                                    DELVX                                 
016218,000139: 37,2611           76505                           VXM      VSL1                                  
016219,000140: 37,2612           02643                                    XSM                                   
016220,000141: 37,2613           57545                           DLOAD    DCOMP                                 
016221,000142: 37,2614           00160                                    MPAC       +3                         
016222,000143: 37,2615           16523                           STODL    DPIPAY                                
016223,000144: 37,2616           00162                                    MPAC       +5                         
016224,000145: 37,2617           02527                           STORE    DPIPAZ                                
016225,000146: 
016226,000147: 37,2620           76001                           SETPD    AXT,1                                 
016227,000148: 37,2621           00001                                    0                                     
016228,000149: 37,2622           00010                                    8D                                    
016229,000150: 37,2623           57535                           SLOAD    DCOMP                                 
016230,000151: 37,2624           02563                                    GEOCOMPS                              
016231,000152: 37,2625           77640                           BMN                                            
016232,000153: 37,2626           76772                                    PERFERAS                              
016233,000154: 37,2627           50135        ALCGKK             SLOAD    BMN                                   
016234,000155: 37,2630           02532                                    ALTIMS                                
016235,000156: 37,2631           76644                                    ALFLT3                                
016236,000157: 37,2632           72174        ALKCG              AXT,2    LXA,1                                 #  LOADS SLOPES AND TIME CONSTANTS AT RQST
016237,000158: 37,2633           00014                                    12D                                   
016238,000159: 37,2634           02444                                    ALX1S                                 
016239,000160: 37,2635           62143        ALKCG2             DLOAD*   INCR,1                                
016240,000161: 37,2636           02243                                    ALFDK      +144D,1                    
016241,000162: 37,2637           77775                           DEC      -2         B-14                       
016242,000163: 37,2640           12545                           STORE    ALDK       +10D,2                     
016243,000164: 37,2641           66104                           TIX,2    SXA,1                                 
016244,000165: 37,2642           76635                                    ALKCG2                                
016245,000166: 37,2643           02444                                    ALX1S                                 
016246,000167: 
016247,000168: 37,2644           77770        ALFLT3             AXT,1                                          
016248,000169: 37,2645           00010                                    8D                                    
016249,000170: 37,2646           41343        DELMLP             DLOAD*   DMP                                   
016250,000171: 37,2647           02533                                    DPIPAY     +8D,1                      
016251,000172: 37,2650           37100                                    PIPASC                                
016252,000173: 37,2651           43661                           SLR      BDSU*                                 
016253,000174: 37,2652           21212                                    9D                                    
016254,000175: 37,2653           02501                                    INTY       +8D,1                      
016255,000176: 37,2654           06501                           STORE    INTY       +8D,1                      
016256,000177: 37,2655           40725                           PDDL     DMP*                                  
016257,000178: 37,2656           37102                                    VELSC                                 

Page 387

016259,000180: 37,2657           02521                                    VLAUN      +8D,1                      
016260,000181: 37,2660           77732                           SL2R                                           
016261,000182: 37,2661           45425                           DSU      STADR                                 
016262,000183: 37,2662           71216                           STORE    DELM       +8D,1                      
016263,000184: 37,2663           06563                           STORE    DELM       +10D,1                     
016264,000185: 37,2664           77100                           TIX,1    AXT,2                                 
016265,000186: 37,2665           76646                                    DELMLP                                
016266,000187: 37,2666           00004                                    4                                     
016267,000188: 37,2667           56743        ALILP              DLOAD*   DMPR*                                 
016268,000189: 37,2670           75324                                    ALK        +4,2                       
016269,000190: 37,2671           75240                                    ALDK       +4,2                       
016270,000191: 37,2672           12453                           STORE    ALK        +4,2                       
016271,000192: 37,2673           77104                           TIX,2    AXT,2                                 
016272,000193: 37,2674           76667                                    ALILP                                 
016273,000194: 37,2675           00010                                    8D                                    
016274,000195: 37,2676           66140        ALKLP              LXC,1    SXA,1                                 
016275,000196: 37,2677           02445                                    CMPX1                                 
016276,000197: 37,2700           02445                                    CMPX1                                 
016277,000198: 37,2701           56743                           DLOAD*   DMPR*                                 
016278,000199: 37,2702           02450                                    ALK        +1,1                       
016279,000200: 37,2703           75216                                    DELM       +8D,2                      
016280,000201: 37,2704           77613                           DAD*                                           
016281,000202: 37,2705           75276                                    INTY       +8D,2                      
016282,000203: 37,2706           12501                           STORE    INTY       +8D,2                      
016283,000204: 37,2707           42743                           DLOAD*   DAD*                                  
016284,000205: 37,2710           75314                                    ALK        +12D,2                     
016285,000206: 37,2711           75230                                    ALDK       +12D,2                     
016286,000207: 37,2712           12463                           STORE    ALK        +12D,2                     
016287,000208: 37,2713           42673                           DMPR*    DAD*                                  
016288,000209: 37,2714           75216                                    DELM       +8D,2                      
016289,000210: 37,2715           75266                                    INTY       +16D,2                     
016290,000211: 37,2716           12511                           STORE    INTY       +16D,2                     
016291,000212: 37,2717           40743                           DLOAD*   DMP*                                  
016292,000213: 37,2720           37105                                    ALSK       +1,1                       
016293,000214: 37,2721           75216                                    DELM       +8D,2                      
016294,000215: 37,2722           42772                           SL1R     DAD*                                  
016295,000216: 37,2723           75256                                    VLAUN      +8D,2                      
016296,000217: 37,2724           12521                           STORE    VLAUN      +8D,2                      
016297,000218: 37,2725           76104                           TIX,2    AXT,1                                 
016298,000219: 37,2726           76676                                    ALKLP                                 
016299,000220: 37,2727           00010                                    8D                                    
016300,000221: 
016301,000222: 37,2730           64743        LOOSE              DLOAD*   PDDL*                                 
016302,000223: 37,2731           02523                                    ACCWD      +8D,1                      
016303,000224: 37,2732           02521                                    VLAUN      +8D,1                      
016304,000225: 37,2733           55523                           PDDL*    VDEF                                  
016305,000226: 37,2734           02531                                    POSNV      +8D,1                      
016306,000227: 37,2735           76521                           MXV      VSL1                                  
016307,000228: 37,2736           02001                                    TRANSM1                               

Page 388

016309,000230: 37,2737           77745                           DLOAD                                          
016310,000231: 37,2740           00155                                    MPAC                                  
016311,000232: 37,2741           06531                           STORE    POSNV      +8D,1                      
016312,000233: 37,2742           77745                           DLOAD                                          
016313,000234: 37,2743           00160                                    MPAC       +3                         
016314,000235: 37,2744           06521                           STORE    VLAUN      +8D,1                      
016315,000236: 37,2745           77745                           DLOAD                                          
016316,000237: 37,2746           00162                                    MPAC       +5                         
016317,000238: 37,2747           06523                           STORE    ACCWD      +8D,1                      
016318,000239: 37,2750           77700                           TIX,1                                          
016319,000240: 37,2751           76730                                    LOOSE                                 
016320,000241: 
016321,000242: 37,2752           76174                           AXT,2    AXT,1                                 #  EVALUATE SINES AND COSINES
016322,000243: 37,2753           00006                                    6                                     
016323,000244: 37,2754           00002                                    2                                     
016324,000245: 37,2755           57343        BOOP               DLOAD*   DMPR                                  
016325,000246: 37,2756           02503                                    ANGX       +2,1                       
016326,000247: 37,2757           37110                                    GEORGEJ                               
016327,000248: 37,2760           77722                           SR2R                                           
016328,000249: 37,2761           73406                           PUSH     SIN                                   
016329,000250: 37,2762           56072                           SL3R     XAD,1                                 
016330,000251: 37,2763           00046                                    X1                                    
016331,000252: 37,2764           10021                           STORE    16D,2                                 
016332,000253: 37,2765           77745                           DLOAD                                          
016333,000254: 37,2766           77746                           COS                                            
016334,000255: 37,2767           10027                           STORE    22D,2                                 #  COSINES
016335,000256: 37,2770           77704                           TIX,2                                          
016336,000257: 37,2771           76755                                    BOOP                                  
016337,000258: 
016338,000259: 37,2772           77776        PERFERAS           EXIT                                           
016339,000260: 37,2773           35016                           CA       EBANK7                                
016340,000261: 37,2774           54003                           TS       EBANK                                 
016341,000262: 37,2775  E7,1400                                  EBANK=   ATIGINC                               
016342,000263: 37,2775           01400                           TC       ATIGINC                               #  GOTO ERASABLE TO CALCULATE ONLY TO RETN
016343,000264: 
016344,000265:                                                                                                  #                             CAUTION
016345,000266: 
016346,000267:                                                                                                  #  THE ERASABLE PROGRAM THAT DOES THE CALCULATIONS MUST BE LOADED
016347,000268:                                                                                                  #  BEFORE ANY ATTEMPT IS MADE TO RUN THE IMU PERFORMANCE TEST
016348,000269: 
016349,000270: 37,2776  E5,1400                                  EBANK=   AZIMUTH                               
016350,000271: 37,2776           11412                           CCS      LENGTHOT                              
016351,000272: 37,2777           03034                           TC       SLEEPIE                               
016352,000273: 37,3000           11440                           CCS      TORQNDX                               
016353,000274: 37,3001           13003                           TCF      +2                                    
016354,000275: 37,3002           03005                           TC       SETUPER1                              
016355,000276: 37,3003           30032                           CA       CDUX                                  
016356,000277: 37,3004           55414                           TS       LOSVEC     +1                         #  FOR TROUBLESHOOTING VD POSNS 2$4
016357,000278: 

Page 389

016359,000280: 37,3005           06042        SETUPER1           TC       INTPRET                               
016360,000281: 37,3006           65345                           DLOAD    PDDL                                  #  ANGLES FROM DRIFT TEST ONLY
016361,000282: 37,3007           02473                                    ANGZ                                  
016362,000283: 37,3010           02477                                    ANGY                                  
016363,000284: 37,3011           55525                           PDDL     VDEF                                  
016364,000285: 37,3012           02501                                    ANGX                                  
016365,000286: 37,3013           74276                           VCOMP    VXSC                                  
016366,000287: 37,3014           37110                                    GEORGEJ                               
016367,000288: 37,3015           74521                           MXV      VSR1                                  
016368,000289: 37,3016           02643                                    XSM                                   
016369,000290: 37,3017           02740                           STORE    OGC                                   
016370,000291: 37,3020           77776                           EXIT                                           
016371,000292: 
016372,000293: 37,3021           32475                           CA       OGCPL                                 
016373,000294: 37,3022           04616                           TC       BANKCALL                              
016374,000295: 37,3023           17315                           CADR     IMUPULSE                              
016375,000296: 37,3024           02315                           TC       IMUSLLLG                              
016376,000297: 37,3025           11440        GEOSTRT4           CCS      TORQNDX                               #  ONLY POSITIVE IF IN VERTICAL DRIFT TEST
016377,000298: 37,3026           02263                           TC       VALMIS                                
016378,000299: 37,3027           06042                           TC       INTPRET                               
016379,000300: 37,3030           77624                           CALL                                           
016380,000301: 37,3031           76401                                    ERTHRVSE                              
016381,000302: 37,3032           77776                           EXIT                                           
016382,000303: 37,3033           02117                           TC       TORQUE                                
016383,000304: 
016384,000305: 37,3034           55412        SLEEPIE            TS       LENGTHOT                              #  TEST NOT OVER-DECREMENT LENGTHOT
016385,000306: 37,3035           11440                           CCS      TORQNDX                               #  ARE WE DOING VERTDRIFT
016386,000307: 37,3036           02447                           TC       EARTHR*                               
016387,000308: 37,3037           05155                           TC       ENDOFJOB                              
016388,000309: 
016389,000310: 37,3040           35014        SOMEERRR           CA       EBANK5                                
016390,000311: 37,3041           54003                           TS       EBANK                                 
016391,000312: 37,3042           34753                           CA       ONE                                   
016392,000313: 37,3043           55576                           TS       OVFLOWCK                              #  STOP ALLOOP FROM CALLING ITSELF
016393,000314: 37,3044           05567                           TC       ALARM                                 
016394,000315: 37,3045           01600                           OCT      1600                                  
016395,000316: 37,3046           02270                           TC       ENDTEST1                              
016396,000317: 37,3047           33054        SOMERR2            CAF      OCT1601                               
016397,000318: 37,3050           05734                           TC       VARALARM                              
016398,000319: 37,3051           05516                           TC       DOWNFLAG                              
016399,000320: 37,3052           00007                           ADRES    IMUSE                                 
016400,000321: 37,3053           05155                           TC       ENDOFJOB                              
016401,000322: 
016402,000323: 37,3054           01601        OCT1601            OCT      01601                                 
016403,000324: 37,3055           06200        DEC585             OCT      06200                                 #  3200 B+14 ORDER IS IMPORTANT
016404,000325: 37,3056           00000 00000  SCHZEROS           2DEC     .00000000                             

Page 390

016406,000327: 37,3060           00000 00000                     2DEC     .00000000                             
016407,000328: 
016408,000329: 37,3062           00000                           OCT      00000                                 
016409,000330: 37,3063           00000        ONEDPP             OCT      00000                                 #  ORDER IS IMPORTANT
016410,000331: 37,3064           00001                           OCT      00001                                 
016411,000332: 
016412,000333: 37,3065           00004        INTVAL             OCT      4                                     
016413,000334: 37,3066           00002                           OCT      2                                     
016414,000335: 37,3067           00220                           DEC      144        B-14                       
016415,000336: 37,3070           77776                           DEC      -1         B-14                       
016416,000337: 37,3071           35730 00035  SOUPLY             2DEC     .93505870                             #  INITIAL GAINS FOR PIP OUTPUTS
016417,000338: 
016418,000339: 37,3073           10317 17550                     2DEC     .26266423                             #  INITIAL GAINS/4 FOR ERECTION ANGLES
016419,000340: 
016420,000341: 37,3075           00115        77DECML            DEC      77         B-14                       
016421,000342: 37,3076           01443        ALXXXZ             GENADR   ALX1S      -1                         
016422,000343: 37,3077           04133 02265  PIPASC             2DEC     .13055869                             
016423,000344: 
016424,000345: 37,3101           57223 66451  VELSC              2DEC     -.52223476                            #   512/980.402
016425,000346: 
016426,000347: 37,3103           05427 12577  ALSK               2DEC     .17329931                             #  SSWAY VEL GAIN X 980.402/4096
016427,000348: 
016428,000349: 37,3105           77567 44202                     2DEC     -.00835370                            #  SSWAY ACCEL GAIN X 980.402/4096
016429,000350: 
016430,000351: 37,3107           24276 14066  GEORGEJ            2DEC     .63661977                             
016431,000352: 
016432,000353: 37,3111           23073 11773  GEORGEK            2DEC     .59737013                             
016433,000354: 

End of include-file IMU_PERFORMANCE_TESTS_4.agc.  Parent file is MAIN.agc