PAGE 1 IMP,3050,IMP 7:20 PM 9/16/1973 PATCH BEG END BUFS 146 160 701 745 2520 2524 3062 3 3631 3637 4063 2 4645 4663 5107 2 5737 5744 6056 1 6742 6751 7063 1 7366 7373 10043 4 10647 10655 11101 2 11410 11433 12103 4 12737 12744 13056 1 13551 13557 14003 2 14711 14721 15033 1 15557 15566 16012 2 16623 16632 17056 2 17460 17464 20022 3 20644 20651 21075 2 21736 21745 22057 1 22567 22607 23033 2 23673 23700 24012 1 24517 24523 25061 3 25532 25532 26070 3 26651 26666 27112 2 27274 27274 30056 5 30623 30631 31055 2 32030 32030 32030 0 32671 33003 1 33627 34053 2 34053 35061 7 35061 36067 7 36067 37075 7 37075 40103 7 37000 37777 VDH 117 TOTAL BUFFERS 6 FEWER BUFFERS IF VDH PRESENT 24 STORE AND FORWARD LIMIT 102 REASSEMBLY LIMIT 30 IMP-TIP CONVERSION REGISTERS 20 STATISTICS GATHERING PLACES PAGE 2 IMP,3050,IMP 7:20 PM 9/16/1973 HALT LOCATIONS 3256 BACKGROUND IN EXA MODE (BACK0)! 5457 NEIGHBOR IMP CHANGED 5654 NO REAS BLOCK FOR MULTI-PKT MESS 5662 MAXR EXCEEDED BY NON-REQUEST MULTI-PKT MESS 5670 MINF VIOLATED BY NON-REQUEST MULTI-PKT MESS 6135 RECVD TRANSMISSION FROM DEAD IMP 6226 RALLY ENTRY ALREADY PRESENT FOR REQ 1 PKT 6234 MAXR EXCEEDED BY A NON-REQUEST 1 PKT MESS 6243 MINF VIOLATED BY A NON-REQUEST 1 PKT MESS 6265 RALLY ENTRY ALREADY PRESENT FOR DESTINATION DEAD 6461 RALLY ENTRY ALREADY PRESENT FOR INC OR REQ8 7140 CANT FIND MULTI-PKT MESS FOR THIS REPLY 10404 SOFTWARE CHECKSUM ERROR IN PACKET 10437 SPURIOUS ACK 10475 QUASI-IMPOSSIBLE SPURIOUS ACK 11205 RELOAD DEMAND WITH BAD PASSWORD 11231 LINE SPEED DECREASED 11244 LINE SPEED INCREASED 12345 ROUTING MESSAGE CHECKSUM ERROR - INTRA IMP 12526 MODEM OUT DETECTED INTRA-IMP CHECKSUM ERROR 12571 200 RETRANSMISSIONS - SERIOUS MALFUNCTION 16564 HOST OUTPUT DETECTED INTRA-IMP CKSUM ERROR 21510 QUEUE COUNTER WENT NEGATIVE 37171 VDH LOOP STATE CHANGED 37307 VDH SPURIOUS ACK PAGE 3 IMP,3050,IMP 7:20 PM 9/16/1973 USEFUL LOCATIONS 135 DDT STAND ALONE ENTRY 137 NICE-STOP AND RELOAD FLAG 140 NICE-STOP AND RESTART FLAG 141 HOST & MODEM INTERFACE CONTROL 142 HOST INTERFACE TEST ENABLE AND TEST WORD 144 VDH RESTART FLAG 145 SAT RESTART FLAG 160 NEIGHB 165 RUT 265 SLT 453 HILO 641 TSEX - TRANSMIT ODD-EVEN BITS 646 RSEX - RECEIVE ODD-EVEN BITS 673 HOST SIMULATOR FLAG 1005 HOST34 SWITCH 1275 CORE DUMP 3415 DZTB - GOES WITH JAM 3421 WTTB - GOES WITH SUCK 3425 SLTB - GOES WITH SLEEP (BACK HOSTS) 3433 LIGHT DISPLAY POINTER AND NOMINAL DISPLAY WORD 10353 NOP HERE TO ACCEPT BAD CHECKSUM PACKETS 11205 DEMAND RELOAD PASSWORD 12433 NOP HERE TO STOP CHECKSUM VERIFY IN I2M 13246 JAM CALL TO DOZE 13251 GAMT 13357 HI - WAITING FOR A PKT TO THROW AWAY 13400 HI - WAITING FOR INITIAL INPUT 13431 HI - INPUT BEING BLOCKED BY OUTPUT 13432 HI - 2 WORD INPUT AREA 13455 HI - NO FREE SPACE 14053 HI - WAITING FOR LEADER 14304 HI - WAITING FOR TWO-WORD STORE 14311 HI - WAITING FOR MESS NO 14343 HI - WAITING FOR FIRST PKT 14367 HI - WAITING FOR PPT SLOT FOR REQ1 14407 HI - WAITING FOR PLT SLOT FOR MESS8 14424 HI - WAITING FOR PLT SLOT FOR REQ8 14436 HI - WAITING FOR TASK TO TAKE A REQ8 14445 HI - WAITING FOR ALL8 14456 HI - WAITING FOR MESS NO FOR MESS8 14537 NOP HERE TO TURN OFF H2I CHECKSUM GENERATION 14544 HI - WAITING FOR MIDDLE PACKET 14624 HI - WAITING FOR TASK TO TAKE A PKT 16107 IHLO 16205 IH - 2 WORD OUTPUT AREA 16341 IH - WAITING FOR INITIALIZATION DELAY 16420 IH - WAITING FOR READY LINE TO DROP 16422 IH - WAITING FOR READY LINE TO GO UP 16443 IH - NOTHING TO DO 16474 IH - SENDING 2 WORD MSG 16557 NOP HERE TO TURN OFF I2H CHECKSUM CHECK 17144 IH - SENDING OUT A PKT 17371 SUCK CALL TO WAIT 17420 SUCT 30434 PARAMETERS TABLE 32271 TRANSMIT, RECEIVE, AND ALLOCATE MESSAGE TABLES 32571 RALLY TABLE - ALLOCATES TO SEND 33457 PPT - PENDING PACKET TABLE 33477 PLT - PENDING LEADER TABLE PAGE 4 IMP,3050,IMP 7:20 PM 9/16/1973 CRASH-RELOAD LOCATIONS 3316 BACKGROUND SAW TIMEOUT STOP 12313 I2M ROUTING CODE BROKEN 21116 ADD CHAIN BROKEN 21125 ADD CHAIN RETURN BROKEN 21134 SOFTWARE WDT FIRED 26132 RUTINP CODE BROKEN 26522 RUTOUT CODE BROKEN 27122 RUTCLK CODE BROKEN PAGE 5 IMP,3050,IMP 7:20 PM 9/16/1973 IMP BUFFERS ASSIGNED PAGE 2 2524 2636 2750 3 3637 3751 4 4663 4775 5 5744 6 6751 7 7373 7505 7617 7731 10 10655 10767 11 11433 11545 11657 11771 12 12744 13 13557 13671 14 14721 15 15566 15700 16 16632 16744 17 17464 17576 17710 20 20651 20763 21 21745 22 22607 22721 23 23700 24 24523 24635 24747 25 25532 25644 25756 26 26666 27000 27 27274 27406 27520 27632 27744 30 30631 30743 31 32 32671 33 33627 33741 34 34053 34165 34277 34411 34523 34635 34747 35 35061 35173 35305 35417 35531 35643 35755 36 36067 36201 36313 36425 36537 36651 36763 37 37075 37207 37321 37433 37545 37657 37771