171:
517:
326:
501:
1661:
509:
39:
266:-1). Up to 31 devices can be addressed using this method. Once addresses are assigned, the controller can then assign "talker" or "listener" roles to any device on the loop. By addressing each device in turn, and using the "Send Accessory ID" message, the controller can determine the role and capability of each device on the loop.
338:
cassette drive). For ease of use, the calculators supported automatic I/O address assignment ("AUTOIO"), where printer or mass storage commands are directed to the first available device of the appropriate type. Where multiple devices per type were present, a manual ("MANIO") assignment mode could be used.
361:
In
Translator mode with an HP-IL controller, the default addressing mode is to connect the converter as the last device in the HP-IL loop, to set its own HP-IB address higher than the number of devices on the HP-IL loop, and to set the addresses of devices to be addressed on the HP-IB side must be
253:
protocol for media access control: messages are passed from one device to the next until they return to the originator. When the loop is initialized, the controller sends an "Auto
Address 1" message to the first device; that device (and each subsequent device) takes the number in the message it
337:
it was built in, in others such as the HP-71 and HP-41, plug in interface modules were available (such as the HP82160A for the HP-41). Popular uses for the HP-IL on the calculators included printing (using the HP 82162A thermal printer) and cassette file storage (through the HP 82161A digital
305:
Hewlett-Packard developed a range of devices to be connected to the HP-IL, mostly peripherals such as printers and storage devices for calculators. Through the 82169A HP-IL/HP-IB Interface, HP-IL controllers could be connected to instruments with an
310:(aka GPIB or IEEE-488) interface, or vice versa. There were also plans to make test equipment with IL interfaces, but apart from the somewhat popular 3468A multimeter, only a few devices were introduced before HP-IL itself became obsolete.
601:
and companion
Autosampler HP 7673 have an HP-IL interface option for instrument programming and data logging using the HP 19405A Sampler/Event Control Module (S/ECM) and the HP 3392A Gas Chromatograph Integrator as
193:
in the early 1980s. It enabled many devices such as printers, plotters, displays, storage devices (floppy disk drives and tape drives), test equipment, etc. to be connected to programmable calculators such as the
246:, and manages all other devices on the loop. HP-IL cables utilize a unique two-pin connector design with polarizing D-shaped shells, and can be connected together without further adapters to extend their length.
285:
can only be assigned to a single device at a time. Data transfer between loop devices is accomplished by the controller designating a talker and one or more listeners and then sourcing a "Send Data" message.
358:. Translator mode is adequate for systems where only one controller is present (typically a calculator on HP-IL), while Mailbox mode applies when there are separate controllers present on both buses.
170:
748:
1101:
365:
In
Mailbox mode, the controllers on either side can place a message into the converter's buffer memory, for the other side to retrieve from that memory.
516:
1629:
1258:
1121:
928:
1309:
980:
1656:
Interfaces are listed by their speed in the (roughly) ascending order, so the interface at the end of each section should be the fastest.
325:
1362:
1201:
1131:
350:(GPIB, IEEE-488) bus, an interface in wide use for test and measurement equipment. The converter can operate in either of two modes,
1693:
1191:
824:
1289:
1081:
1633:
1284:
1253:
346:
Through the 82169A interface converter, even small calculators could be used to control a number of devices on a standard
1231:
1557:
1496:
1351:
1015:
1156:
921:
1211:
650:
PAC Hardware GMBH (Germany) PAC-Screen 80-col/graphics video interface with parallel printer port and mouse port
297:
device mode; and with the HP 82402 Dual HP-IL Adapter, the HP-71B could even be configured with multiple loops.
1683:
1664:
1639:
1531:
1186:
906:
1221:
380:
1688:
1485:
1438:
1294:
1066:
914:
742:
362:
higher than the converter's address. Deviating from this scheme requires manual control of addressing.
1481:
1334:
1216:
701:
317:
and general-purpose parallel I/O interfaces as well as a prototype kit to create custom interfaces.
242:, which delivered messages to the next device in the loop. One device on the loop is designated the
1393:
948:
900:
937:
1383:
1005:
941:
820:
696:
598:
591:
538:
445:
219:
273:
role to a device, that device accepts and processes data received from the loop. The role of
1116:
850:
834:
427:
277:
allows a device to originate data on the loop. Multiple devices can be assigned the role of
289:
Most devices that were designed to be used as controllers were fixed in that role, but the
262:" message finally returns to the controller, it can tell how many devices are on the loop (
1246:
1096:
1076:
951:
190:
184:
87:
69:
29:
811:
500:
1547:
1241:
1166:
1091:
995:
970:
860:
Describes 1LB3-0003 chip. (Later variants of this IC were the 1LR4-0002 and 1ML7-0005.)
571:
471:
HP 82166A HP-IL Converter (smaller version of GPIO interface intended for embedded use)
440:
1677:
1619:
1506:
1398:
1346:
1329:
1111:
1010:
1000:
975:
690:
250:
723:
1356:
1299:
1151:
1056:
397:
238:, which received messages from the previous device in the loop; and one designated
231:
207:
145:
508:
1624:
1603:
1526:
1521:
1366:
1304:
1279:
1206:
990:
985:
670:
423:
418:
38:
1477:
1176:
965:
660:
635:
581:
234:): each device in the loop had a pair of two-wire connections, one designated
813:
THE HP-IL SYSTEM: An
Introductory Guide to the Hewlett-Packard Interface Loop
1501:
1491:
1458:
1453:
1388:
1263:
1051:
1036:
1031:
762:
431:
1511:
1448:
1181:
1041:
889:
685:
551:
531:
HP 82162A Thermal
Printer (HP-IL version of HP 82143A printer for HP-41C)
174:
HP-41CX connected to thermal printer and digital cassette drive via HP-IL
1644:
1598:
1582:
1408:
1226:
1171:
1106:
1061:
391:
215:
1577:
1468:
1443:
1433:
1428:
1423:
1418:
1236:
1126:
1086:
1046:
458:
414:
404:
384:
314:
290:
211:
199:
195:
44:
17:
1562:
1473:
894:
618:
HP-IL Development Module (plug-in
Application ROM module for HP-41C)
230:
As its name implies, an HP-IL network formed a loop (i.e. it was a
1572:
1463:
1341:
1314:
1196:
1146:
1071:
515:
507:
499:
409:
347:
334:
333:
Several HP calculators were offered with HP-IL interfaces. In the
324:
307:
203:
169:
21:
189:) was a short-range interconnection bus or network introduced by
1567:
1552:
1413:
1324:
1319:
1161:
786:
587:
HP 5384A and HP 5385A frequency counters with option 003 (HP-IL)
485:
478:
465:
910:
901:
https://www.hhcworld.com/files/compendiums/hp_il_compendium.pdf
884:
724:"HP-IL: A Low-Cost Digital Interface for Portable Applications"
1516:
1141:
1136:
97:
254:
receives as its own address, and then forwards the message
879:
390:
HP 82973A HP-IL interface for IBM PC and compatibles with
647:
Direct
Connect Modem 300 Plus Modem & Bar Code Reader
675:
Interface
Instruments ADC71A Analog to Digital Converter
605:
HP 4945A Transmission
Impairment Measuring Set (Opt 103)
852:
The HP-IL Integrated Circuit (HP P/N 82166-90016 rev B)
631:
FSI164A HP-IL/RS-232C Interface by Firmware Specialists
868:
HP 82401A HP-IL Interface Owner's Manual for the HP-71
836:
The HP-IL Interface Specification (HP P/N 82166-90017)
787:"HP 5890 Series II Gas Chromatograph Service Manual"
557:
HP 7470A Graphics Plotter (Opt. 003 HP-IL Interface)
1612:
1591:
1540:
1376:
1272:
1024:
958:
865:
HP 82160A HP-IL Module Owner's Manual for the HP-41
160:
150:
138:
130:
125:
117:
109:
104:
93:
83:
75:
65:
60:
52:
903:HP-IL Compendium, Sylvain Côté, September 20, 2018
810:Gerry Kane; Steve Harper; David Ushijima (1982).
437:HP 45643A HP-IL/Parallel Interface for the HP-150
313:In addition to the HP-IB interface, HP also sold
560:HP 2671A/G Alphanumeric Graphics Thermal Printer
1259:Coherent Accelerator Processor Interface (CAPI)
641:CMT RAM Disc 128-512k RAM Disc; Optional RS-232
819:. Berkeley: Osborne/McGraw-Hill. p. 106.
669:Steinmetz & Brown SB10161A/2A Single/Dual
922:
8:
747:: CS1 maint: multiple names: authors list (
544:HP 82168A, 92205M Acoustic Couplers (Modems)
27:
258:to the next device. When the "Auto Address
929:
915:
907:
722:Quick, R.D., Harper, S.L. (January 1983).
512:HP ThinkJet rear view with HP-IL interface
491:HP 82402 Dual HP-IL Adapter for the HP-71B
293:was capable of assuming either controller
26:
474:HP 82166C HP-IL Converter Prototyping Kit
713:
890:http://www.hp-collection.org/hpil.html
740:
656:Interloop #130 HP-IL Twinax Terminator
577:HP 3421A Data Acquisition/Control Unit
858:. Hewlett Packard. 1982. p. 100.
842:. Hewlett Packard. 1982. p. 200.
608:HP 5006A Signature Analyzer (Opt 030)
584:(HP-IL version of HP 3478A with GPIB)
537:HP 92198A 80-Column Video Interface (
7:
644:Ocean Scientific HP-IL A/D Interface
693:, another serialisation of IEEE-488
14:
895:http://www.jeffcalc.hp41.eu/hpil/
666:Interloop #210 HP-IL IO Interface
468:Interface (generic parallel port)
1660:
1659:
329:HP 82161A digital cassette drive
37:
897:A homebrew HP-IL to USB bridge.
369:Equipment with HP-IL Interface
214:computers, as well as generic
1:
1254:Intel Ultra Path Interconnect
653:Interloop #111 HP-IL Repeater
621:HP 82183A Extended I/O Module
400:desktop computers/controllers
1232:Intel QuickPath Interconnect
1222:Direct Media Interface (DMI)
885:http://www.hp41.org/HPIL.cfm
269:When the controller assigns
256:with the address incremented
144:(limited to 16 kbit/s)
845:The official specification.
534:HP 82163A/B Video Interface
403:HP 82401A HP-IL module for
156:(with extensions up to 960)
1710:
1217:Compute Express Link (CXL)
342:HP-IL to HP-IB interfacing
321:HP Calculator Applications
15:
1653:
1454:IEEE-1284 (parallel port)
1369:logical device interface)
520:HP 82163B Video Interface
481:Interface (bidirectional)
461:C Interface (serial port)
281:at once, but the role of
163:
153:
141:
133:
120:
112:
96:
86:
78:
68:
55:
36:
1694:Hewlett-Packard products
574:(can be loop controller)
570:HP 1630A/D/G and HP1631
396:HP 82938A Interface for
43:HP-IL connectors (on an
16:Not to be confused with
880:http://www.hpmuseum.org
792:. p. 10-8 to 10-13
731:Hewlett-Packard Journal
594:with option 022 (HP-IL)
1016:List of bus bandwidths
525:HP 9114A/B Disc Drives
521:
513:
505:
381:HP-41 extension module
330:
175:
105:General specifications
659:Interloop #200 HP-IL
519:
511:
503:
328:
173:
1459:IEEE-1394 (FireWire)
1197:PCI Extended (PCI-X)
702:Universal Serial Bus
686:IEEE-488 (GPIB,HPIB)
547:HP 82905A/B Printers
528:HP 82161A Tape Drive
1300:Parallel ATA (PATA)
580:HP 3468A/B Digital
484:HP 5061-3166 HP-IL/
56:Peripheral data bus
33:
1207:PCI Express (PCIe)
522:
514:
506:
331:
176:
94:Superseded by
61:Production history
1671:
1670:
1657:
1384:Apple Desktop Bus
1361:PCI Express (via
1320:Serial ATA (SATA)
1006:Network on a chip
763:"HP82169A Manual"
697:Apple Desktop Bus
671:5 1/4" Disc Drive
599:Gas Chromatograph
592:spectrum analyzer
539:Mountain Computer
168:
167:
1701:
1663:
1662:
1655:
1117:HP Precision Bus
931:
924:
917:
908:
859:
857:
843:
841:
830:
818:
801:
800:
798:
797:
791:
783:
777:
776:
774:
773:
767:
759:
753:
752:
746:
738:
728:
718:
565:Test instruments
477:HP 82169A HP-IL/
464:HP 82165A HP-IL/
457:HP 82164A HP-IL/
428:HP Portable Plus
379:HP 82160A HP-IL
142:160 kbit/s
41:
34:
1709:
1708:
1704:
1703:
1702:
1700:
1699:
1698:
1674:
1673:
1672:
1667:
1658:
1649:
1608:
1587:
1536:
1449:IEEE-488 (GPIB)
1372:
1268:
1247:Infinity Fabric
1077:Europe Card Bus
1020:
954:
935:
876:
871:
855:
849:
839:
833:
827:
816:
809:
805:
804:
795:
793:
789:
785:
784:
780:
771:
769:
765:
761:
760:
756:
739:
726:
721:
719:
715:
710:
682:
628:
615:
572:Logic analyzers
567:
498:
454:
376:
371:
344:
323:
303:
228:
191:Hewlett-Packard
185:Hewlett-Packard
155:
143:
88:Hewlett-Packard
70:Hewlett-Packard
48:
32:Interface Loop)
30:Hewlett-Packard
25:
12:
11:
5:
1707:
1705:
1697:
1696:
1691:
1686:
1684:Computer buses
1676:
1675:
1669:
1668:
1654:
1651:
1650:
1648:
1647:
1642:
1637:
1627:
1622:
1616:
1614:
1610:
1609:
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1606:
1601:
1595:
1593:
1589:
1588:
1586:
1585:
1580:
1575:
1570:
1565:
1560:
1558:Intel HD Audio
1555:
1550:
1548:ADAT Lightpipe
1544:
1542:
1538:
1537:
1535:
1534:
1529:
1524:
1519:
1514:
1509:
1504:
1499:
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1471:
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1416:
1411:
1406:
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1396:
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1380:
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1359:
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1332:
1322:
1317:
1312:
1307:
1302:
1297:
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1282:
1276:
1274:
1270:
1269:
1267:
1266:
1261:
1256:
1251:
1250:
1249:
1242:HyperTransport
1239:
1234:
1229:
1224:
1219:
1214:
1209:
1204:
1199:
1194:
1189:
1184:
1179:
1174:
1169:
1164:
1159:
1154:
1149:
1144:
1139:
1134:
1129:
1124:
1119:
1114:
1109:
1104:
1099:
1094:
1089:
1084:
1079:
1074:
1069:
1064:
1059:
1054:
1049:
1044:
1039:
1034:
1028:
1026:
1022:
1021:
1019:
1018:
1013:
1008:
1003:
998:
996:Bus contention
993:
988:
983:
978:
973:
971:Front-side bus
968:
962:
960:
956:
955:
952:computer buses
936:
934:
933:
926:
919:
911:
905:
904:
898:
892:
887:
882:
875:
874:External links
872:
870:
869:
866:
862:
861:
847:
831:
825:
806:
803:
802:
778:
754:
712:
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664:
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619:
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497:
494:
493:
492:
489:
482:
475:
472:
469:
462:
453:
450:
449:
448:
443:
441:HP Integral PC
438:
435:
421:
412:
407:
401:
394:
388:
375:
372:
370:
367:
343:
340:
322:
319:
302:
299:
227:
224:
187:Interface Loop
166:
165:
162:
158:
157:
152:
148:
147:
140:
136:
135:
132:
128:
127:
123:
122:
119:
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107:
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101:
95:
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67:
63:
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58:
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50:
49:
42:
13:
10:
9:
6:
4:
3:
2:
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1652:
1646:
1643:
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1635:
1631:
1628:
1626:
1623:
1621:
1620:Multidrop bus
1618:
1617:
1615:
1611:
1605:
1602:
1600:
1597:
1596:
1594:
1590:
1584:
1581:
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1556:
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1551:
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1545:
1543:
1539:
1533:
1530:
1528:
1527:External PCIe
1525:
1523:
1520:
1518:
1515:
1513:
1510:
1508:
1507:Parallel SCSI
1505:
1503:
1500:
1498:
1495:
1493:
1490:
1487:
1483:
1479:
1475:
1472:
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1427:
1425:
1422:
1420:
1417:
1415:
1412:
1410:
1407:
1405:
1402:
1400:
1399:Commodore bus
1397:
1395:
1392:
1390:
1387:
1385:
1382:
1381:
1379:
1375:
1368:
1364:
1360:
1358:
1355:
1353:
1350:
1348:
1347:Fibre Channel
1345:
1343:
1340:
1336:
1333:
1331:
1328:
1327:
1326:
1323:
1321:
1318:
1316:
1313:
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1225:
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1215:
1213:
1210:
1208:
1205:
1203:
1200:
1198:
1195:
1193:
1190:
1188:
1185:
1183:
1180:
1178:
1175:
1173:
1170:
1168:
1165:
1163:
1160:
1158:
1155:
1153:
1150:
1148:
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1143:
1140:
1138:
1135:
1133:
1130:
1128:
1125:
1123:
1120:
1118:
1115:
1113:
1110:
1108:
1105:
1103:
1100:
1098:
1095:
1093:
1090:
1088:
1085:
1083:
1080:
1078:
1075:
1073:
1070:
1068:
1065:
1063:
1060:
1058:
1055:
1053:
1050:
1048:
1045:
1043:
1040:
1038:
1035:
1033:
1030:
1029:
1027:
1023:
1017:
1014:
1012:
1011:Plug and play
1009:
1007:
1004:
1002:
1001:Bus mastering
999:
997:
994:
992:
989:
987:
984:
982:
979:
977:
976:Back-side bus
974:
972:
969:
967:
964:
963:
961:
957:
953:
950:
946:
944:
939:
932:
927:
925:
920:
918:
913:
912:
909:
902:
899:
896:
893:
891:
888:
886:
883:
881:
878:
877:
873:
867:
864:
863:
854:
853:
848:
846:
838:
837:
832:
828:
826:0-931988-77-2
822:
815:
814:
808:
807:
788:
782:
779:
764:
758:
755:
750:
744:
736:
732:
725:
717:
714:
707:
703:
700:
698:
695:
692:
691:Commodore bus
689:
687:
684:
683:
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674:
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252:
251:token passing
249:HP-IL uses a
247:
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74:
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59:
51:
46:
40:
35:
31:
23:
19:
1689:Serial buses
1403:
1152:TURBOchannel
942:
851:
844:
835:
812:
794:. Retrieved
781:
770:. Retrieved
768:. p. 17
757:
743:cite journal
734:
730:
716:
634:Leitz IL-41
364:
360:
355:
351:
345:
332:
312:
304:
301:Applications
294:
288:
282:
278:
274:
270:
268:
263:
259:
255:
248:
243:
239:
235:
232:Ring network
229:
183:
179:
177:
151:Max. devices
84:Manufacturer
1625:CoreConnect
1604:ExpressCard
1532:Thunderbolt
1522:Camera Link
1305:Bus and Tag
991:Address bus
986:Control bus
981:Daisy chain
626:Third-party
602:controller.
582:Multimeters
504:HP ThinkJet
496:Peripherals
424:HP 110 Plus
419:HP Portable
374:Controllers
131:Data signal
100:(mid-1990s)
1678:Categories
1478:ACCESS.bus
1377:Peripheral
1177:InfiniBand
1172:HP GSC bus
966:System bus
796:2021-06-05
772:2013-06-05
737:(1): 3–10.
708:References
661:Step Motor
636:Theodolite
452:Interfaces
352:Translator
244:controller
226:Principles
134:Token ring
1439:Lightning
1389:Atari SIO
1264:SpaceWire
1097:Zorro III
1037:S-100 bus
1032:SS-50 bus
1025:Standards
945:standards
938:Technical
638:interface
590:HP 8590A
550:HP 2225B
488:Interface
432:HP 45711A
398:Series 80
383:(for the
208:Series 80
1665:Category
1640:Wishbone
1613:Embedded
1592:Portable
1512:Profibus
1444:DMX512-A
1330:Parallel
1182:Ethernet
1092:Zorro II
1042:Multibus
943:de facto
680:See also
613:Software
597:HP 5890
552:ThinkJet
446:HP-3392A
410:HP-75C/D
335:HP-75C/D
279:listener
271:listener
204:HP-75C/D
161:Protocol
110:External
76:Designed
66:Designer
1645:SLIMbus
1599:PC Card
1583:TOSLINK
1273:Storage
1227:RapidIO
1107:FASTBUS
1062:STD Bus
959:General
554:Printer
392:ISA bus
356:Mailbox
216:ISA bus
139:Bitrate
1578:S/PDIF
1469:1-Wire
1434:RS-485
1429:RS-423
1424:RS-422
1419:RS-232
1280:ST-506
1237:NVLink
1087:STEbus
1047:Unibus
823:
663:Driver
459:RS-232
415:HP 110
405:HP-71B
385:HP-41C
315:RS-232
291:HP-71B
283:talker
275:talker
218:based
212:HP-110
206:, the
200:HP-71B
196:HP-41C
164:Serial
45:HP-71B
28:HPIL (
18:HP-HIL
1573:McASP
1541:Audio
1486:SMBus
1482:PMBus
1464:UNI/O
1404:HP-IL
1357:SATAe
1342:ESCON
1315:HIPPI
1147:NuBus
1102:CAMAC
1072:Q-Bus
1067:SMBus
1052:VAXBI
949:wired
856:(PDF)
840:(PDF)
817:(PDF)
790:(PDF)
766:(PDF)
727:(PDF)
348:HP-IB
308:HP-IB
180:HP-IL
79:1980s
22:HP-IB
1630:AMBA
1568:MADI
1553:AES3
1414:MIDI
1367:NVMe
1363:AHCI
1325:SCSI
1310:DSSI
1285:ESDI
1162:SBus
1122:EISA
1057:MBus
947:for
940:and
821:ISBN
749:link
486:SCSI
479:HPIB
466:GPIO
426:aka
417:aka
210:and
202:and
178:The
126:Data
118:Pins
53:Type
1634:AXI
1563:I²S
1517:USB
1502:D²B
1497:SPI
1492:I3C
1474:I²C
1409:HIL
1394:DCB
1365:or
1352:SSA
1335:SAS
1295:SMD
1290:IPI
1212:AGP
1202:PXI
1192:PCI
1187:UPA
1167:VLB
1157:MCA
1142:VPX
1137:VXS
1132:VXI
1127:VME
1112:LPC
1082:ISA
354:or
240:out
220:PCs
154:31
113:yes
98:USB
20:or
1680::
1484:,
1480:,
745:}}
741:{{
735:34
733:.
729:.
295:or
236:in
222:.
198:,
1636:)
1632:(
1488:)
1476:(
930:e
923:t
916:v
829:.
799:.
775:.
751:)
720:*
541:)
434:)
430:(
387:)
264:n
260:n
182:(
121:2
47:)
24:.
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