233:(and the 4331) were announced on 30 January 1979. Like the 4331, it came with an integrated adapter that permitted attaching up to 16 of the newly introduced IBM 3370 DASD. The 4341 did not support the much lower capacity IBM 3310. The 4341 Introduced the Extended Control Program Support:VM (ECPS:VM), Extended Control Program Support:VS1 (ECPS:VS1) and Extended Control Program Support:Virtual Storage Extended (ECPS:VSE) features. The 4341-2 introduced the Extended Control Program Support:MVS (ECPS:MVS) option, a subset of System/370 extended facility.
54:
22:
707:
ECPS:VSE mode provides an alternative method for translating addresses in instructions during instruction execution and, in addition, provides for translating addresses in channel command words during I/O operations. The address translation technique used in ECPS:VSE mode permits only one virtual
37:
that were sold from 1979 through 1992. They featured modest electrical and cooling requirements, and thus did not require a data center environment. They had a disruptive effect on the market, allowing customers to provide internal IBM computing services at a cost point lower than commercial
266:
Auto-Start—automatically turns on the processor by telephone via the Remote
Operator Control Facility or at a predetermined time and day of the week. The processor powers on and proceeds with initial microcode load, sets the clock and loads the
488:: Allows computational procedures with algorithmic verification of results." and adds "New floating-point instructions are implemented for computation of basic arithmetic operations and the scalar product with maximum accuracy."
236:
On 20 October 1982, IBM announced a new entry-level 4341 model, Model Group 9 and a new top-of-the-line 4341, Model Group 12. Model Group 12 included the Dual
Address Space (DAS) facility.
210:, described as having "a storage capacity of 64.5 million characters", was to be used with "Storage disks .. sealed to reduce the possibility of damage, loss, misuse or contamination".
1099:
1079:
1069:
996:
920:
879:
983:
649:
594:
565:
534:
327:
Model Group 3 was announced on 25 October 1984 and withdrawn on 11 February 1986. Model Groups 11, 12, 13 and 14 were announced on 11 February 1986.
623:
198:(and the 4341) were announced on 30 January 1979. It came with an integrated adapter that permitted attaching up to 16 of two newly introduced
1032:
1244:
909:[Computers don't deliver exact results - Karlsruhe research team Kulisch implements new computer arithmetic for the IBM 4361].
1279:
695:
675:
50:
Each model - 4331, 4341, 4361, and 4381 - had various sub-models, such as the 4341 model 1 (or 4341-1) and 4341 model 2 (4341-2).
42:
services. All 4300 processors used a 3278-2A, 3279-C or 3205 display console rather than a 3210 or 3215 keyboard/printer console.
720:
1353:
907:"Rechner liefern keine korrekten Ergebnisse - Neue Arithmetik der Karlsruher Forschungsgruppe Kulisch in der 4361 realisiert"
773:
750:
682:
1190:
993:
1025:
891:
1274:
1004:
906:
966:
1264:
661:
635:
606:
577:
438:
303:
1018:
546:
390:
The IBM 4341 Model 2 was developed by the intermediate systems group, and manufactured by SPD, in
Endicott.
199:
374:(SSX/VSE), a simplified version of the DOS/VSE operating system for the IBM 4321 and IBM 4331 processors.
371:
278:
65:
1358:
295:
80:
1124:
1114:
1109:
1104:
1094:
1089:
1084:
1074:
1064:
384:
Hughes
Aircraft Company was the first IBM customer to install Endicott's initial IBM 4341 processor
812:
916:
468:
1228:
1211:
498:
343:
282:
958:
330:
Model Groups 21, 22, 23 and 24 were announced on 19 May 1987 and withdrawn on 19 August 1992.
306:, had been under development for decades, was implemented as an optional feature on the 4361.
1216:
350:
423:
8:
1284:
1269:
444:
394:
387:
The IBM 4331 Model 2 was developed by the
Boeblingen lab and manufactured in Endicott.
962:
947:
843:
827:
1327:
324:
Model Groups 1 and 2 were announced Sep 15, 1983 and withdrawn on 11 February 1986.
839:
64:
The 4381-13 through 4381-24 (announced in 1987) were entry-level machines for the
53:
1000:
987:
1312:
1322:
1307:
1302:
1297:
1041:
433:
428:
34:
1347:
1317:
911:
859:
364:
supported the 4300 series as well as other System/370-compatible processors.
39:
1254:
1249:
954:
402:
299:
83:
models. Other models included 1, 2, 11, 12, 13, 21, 22, 23, 90 and 91.
393:
Subsequent processors had development and manufacturing activities in
217:
with up to 571 million characters could also be used with an IBM 4341.
254:
Model Group 3 was announced the following year on 12 September 1984.
1195:
1185:
1165:
1144:
1139:
1134:
857:
Tom Henkel (1981-11-30). "Multiple Uses of IBM 4300 Muddy Market".
472:
406:
73:
69:
58:
1010:
464:
1259:
1221:
410:
398:
357:
277:
A Workstation
Adapter that includes support for terminals with
722:
IBM 4300 Processors
Principles of Operation for ECPS: VSE Mode
1332:
302:, this feature's advancement, conceptualization of which, as
298:
has long been part of computing history, and was present in
21:
251:
Model Groups 4 and 5 were announced on 15 September 1983.
887:
805:
782:
759:
729:
691:
657:
631:
602:
573:
542:
809:
A large-number arithmetic with optimal one-side rounding
321:
had a greater longevity than any of the above systems.
830:(1988). "Accurate arithmetic for vector processors".
289:
262:Among the new/optional features for the 4361 were:
946:
708:storage of up to 16 million bytes to be supported.
510:Endicott is best known as the "Birthplace of IBM".
1345:
372:Small Systems Executive/Virtual Storage Extended
342:Disk Operating System/Virtual Storage Extended (
825:
68:architecture. They were positioned between the
1026:
832:Journal of Parallel and Distributed Computing
819:
775:IBM System/370 Extended Facility and ECPS:MVS
79:The 4381-3, 4381-14, 4381-24 and 4381-92 are
850:
309:The 4361 was withdrawn on 17 February 1987.
239:The 4341 was withdrawn on 11 February 1986.
221:The 4331 was withdrawn on 18 November 1981.
76:in performance at the time of announcement.
1033:
1019:
874:
872:
870:
856:
796:
1280:PC-based IBM mainframe-compatible systems
984:IBM Archives: Mainframes product profiles
618:
616:
589:
587:
560:
558:
556:
529:
527:
52:
20:
949:IBM Mainframes: Architecture and Design
867:
1346:
1245:Basic Assembly Language and successors
944:
33:are mid-range systems compatible with
1014:
802:
642:
613:
584:
553:
524:
945:Prasad, N. S. (1989). "Chapter 11".
749:
504:
491:
478:
457:
356:Operating System/Virtual Storage 1 (
333:
186:was announced on 18 November 1981.
13:
1040:
938:
904:
898:
811:] (Ph.D. thesis) (in German).
14:
1370:
977:
915:(in German). Karlsruhe, Germany:
684:A Guide to the IBM 4341 Processor
497:The announcement noted "based on
486:High-Accuracy Arithmetic Facility
290:High-Accuracy Arithmetic Facility
1275:Language for Systems Development
1196:2540 punched-card reader–writer
1186:270x communications controllers
1005:Living Computers: Museum + Labs
923:from the original on 2016-05-30
271:
257:
1191:3705 Communications Controller
766:
752:IBM System/370 Assists for MVS
743:
713:
668:
349:Virtual Machine Facility/370 (
1:
1354:IBM System/360 mainframe line
781:. Systems (Second ed.).
732:. September 1980. GA22-7070-1
728:. Systems (Second ed.).
517:
439:Karlsruhe Accurate Arithmetic
304:Karlsruhe Accurate Arithmetic
200:direct-access storage devices
890:. 2003-01-23. Archived from
844:10.1016/0743-7315(88)90020-2
785:. November 1980. GA22-7072-1
762:. October 1981. GA22-7079-1.
690:. Systems (First ed.).
660:. 2003-01-23. Archived from
634:. 2003-01-23. Archived from
605:. 2003-01-23. Archived from
576:. 2003-01-23. Archived from
545:. 2003-01-23. Archived from
7:
417:
312:
242:
224:
189:
177:
10:
1375:
1265:Hexadecimal floating-point
990: (archived 2005-01-14)
281:keyboards, supporting the
1293:
1237:
1204:
1178:
1153:
1123:
1055:
1048:
973:(NB. Describes the 4381.)
296:floating-point arithmetic
45:
676:"Section 01: Highlights"
450:
378:
103:Approximate performance
917:IDG Business Media GmbH
367:For the 4321 and 4331:
1328:IBM zEnterprise System
1212:DOS/360 and successors
694:. April 1979. p.
441:(KAA) for the IBM 4361
283:APL syntax and symbols
61:
26:
1217:OS/360 and successors
880:"Endicott chronology"
813:Universität Karlsruhe
803:Lortz, Bruno (1971).
484:Described by IBM as "
56:
24:
16:Computer product line
424:List of IBM products
1285:Program status word
758:(Second ed.).
87:
999:2020-05-28 at the
828:Kulisch, Ulrich W.
86:
62:
27:
1341:
1340:
1174:
1173:
905:CW (1985-12-20).
338:New releases of:
334:Operating systems
175:
174:
1366:
1359:32-bit computers
1053:
1052:
1035:
1028:
1021:
1012:
1011:
972:
952:
932:
931:
929:
928:
902:
896:
895:
876:
865:
864:
863:. pp. 6, 8.
854:
848:
847:
823:
817:
816:
800:
794:
793:
791:
790:
780:
770:
764:
763:
757:
747:
741:
740:
738:
737:
727:
717:
711:
710:
704:
703:
689:
680:
672:
666:
665:
650:"4381 Processor"
646:
640:
639:
624:"4361 Processor"
620:
611:
610:
595:"4341 Processor"
591:
582:
581:
566:"4331 Processor"
562:
551:
550:
535:"DPD chronology"
531:
511:
508:
502:
495:
489:
482:
476:
461:
88:
85:
59:3278-2A terminal
1374:
1373:
1369:
1368:
1367:
1365:
1364:
1363:
1344:
1343:
1342:
1337:
1289:
1233:
1200:
1170:
1149:
1127:
1119:
1057:
1044:
1039:
1001:Wayback Machine
994:Request a login
988:Wayback Machine
980:
969:
941:
939:Further reading
936:
935:
926:
924:
903:
899:
878:
877:
868:
855:
851:
824:
820:
801:
797:
788:
786:
778:
772:
771:
767:
755:
748:
744:
735:
733:
725:
719:
718:
714:
701:
699:
687:
678:
674:
673:
669:
648:
647:
643:
622:
621:
614:
593:
592:
585:
564:
563:
554:
533:
532:
525:
520:
515:
514:
509:
505:
496:
492:
483:
479:
462:
458:
453:
420:
381:
336:
315:
292:
274:
260:
245:
227:
192:
180:
48:
31:IBM 4300 series
17:
12:
11:
5:
1372:
1362:
1361:
1356:
1339:
1338:
1336:
1335:
1330:
1325:
1320:
1315:
1310:
1308:IBM System/390
1305:
1300:
1294:
1291:
1290:
1288:
1287:
1282:
1277:
1272:
1267:
1262:
1257:
1252:
1247:
1241:
1239:
1235:
1234:
1232:
1231:
1226:
1225:
1224:
1214:
1208:
1206:
1202:
1201:
1199:
1198:
1193:
1188:
1182:
1180:
1176:
1175:
1172:
1171:
1169:
1168:
1163:
1157:
1155:
1151:
1150:
1148:
1147:
1142:
1137:
1131:
1129:
1121:
1120:
1118:
1117:
1112:
1107:
1102:
1097:
1092:
1087:
1082:
1077:
1072:
1067:
1061:
1059:
1050:
1046:
1045:
1042:IBM System/370
1038:
1037:
1030:
1023:
1015:
1009:
1008:
991:
979:
978:External links
976:
975:
974:
967:
940:
937:
934:
933:
897:
894:on 2007-01-09.
866:
849:
826:Kirchner, R.;
818:
795:
765:
742:
712:
667:
664:on 2005-03-11.
641:
638:on 2013-04-26.
612:
609:on 2005-03-11.
583:
580:on 2005-03-11.
552:
549:on 2010-08-20.
522:
521:
519:
516:
513:
512:
503:
490:
477:
455:
454:
452:
449:
448:
447:
442:
436:
434:IBM System/370
431:
429:IBM System/360
426:
419:
416:
415:
414:
391:
388:
385:
380:
377:
376:
375:
362:
361:
354:
347:
335:
332:
314:
311:
291:
288:
287:
286:
273:
270:
269:
268:
259:
256:
244:
241:
226:
223:
219:
218:
211:
191:
188:
179:
176:
173:
172:
169:
166:
163:
160:
156:
155:
152:
149:
146:
143:
139:
138:
137:3.2 Ă— 370/138
135:
132:
129:
126:
122:
121:
118:
115:
112:
109:
105:
104:
101:
98:
95:
92:
57:IBM 4341 with
47:
44:
15:
9:
6:
4:
3:
2:
1371:
1360:
1357:
1355:
1352:
1351:
1349:
1334:
1331:
1329:
1326:
1324:
1321:
1319:
1316:
1314:
1311:
1309:
1306:
1304:
1301:
1299:
1296:
1295:
1292:
1286:
1283:
1281:
1278:
1276:
1273:
1271:
1268:
1266:
1263:
1261:
1258:
1256:
1253:
1251:
1248:
1246:
1243:
1242:
1240:
1236:
1230:
1227:
1223:
1220:
1219:
1218:
1215:
1213:
1210:
1209:
1207:
1203:
1197:
1194:
1192:
1189:
1187:
1184:
1183:
1181:
1177:
1167:
1164:
1162:
1159:
1158:
1156:
1152:
1146:
1143:
1141:
1138:
1136:
1133:
1132:
1130:
1126:
1122:
1116:
1113:
1111:
1108:
1106:
1103:
1101:
1098:
1096:
1093:
1091:
1088:
1086:
1083:
1081:
1078:
1076:
1073:
1071:
1068:
1066:
1063:
1062:
1060:
1054:
1051:
1047:
1043:
1036:
1031:
1029:
1024:
1022:
1017:
1016:
1013:
1006:
1002:
998:
995:
992:
989:
985:
982:
981:
970:
964:
960:
956:
951:
950:
943:
942:
922:
918:
914:
913:
912:Computerwoche
908:
901:
893:
889:
885:
881:
875:
873:
871:
862:
861:
860:Computerworld
853:
845:
841:
838:(3): 250–70.
837:
833:
829:
822:
814:
810:
806:
799:
784:
777:
776:
769:
761:
754:
753:
746:
731:
724:
723:
716:
709:
698:. GC20-1877-0
697:
693:
686:
685:
677:
671:
663:
659:
655:
651:
645:
637:
633:
629:
625:
619:
617:
608:
604:
600:
596:
590:
588:
579:
575:
571:
567:
561:
559:
557:
548:
544:
540:
536:
530:
528:
523:
507:
500:
494:
487:
481:
474:
470:
466:
460:
456:
446:
443:
440:
437:
435:
432:
430:
427:
425:
422:
421:
412:
408:
404:
400:
396:
392:
389:
386:
383:
382:
373:
370:
369:
368:
365:
359:
355:
352:
348:
345:
341:
340:
339:
331:
328:
325:
322:
320:
310:
307:
305:
301:
297:
284:
280:
276:
275:
265:
264:
263:
255:
252:
250:
240:
237:
234:
232:
222:
216:
212:
209:
205:
204:
203:
201:
197:
187:
185:
170:
167:
164:
161:
158:
157:
153:
150:
147:
144:
141:
140:
136:
133:
130:
127:
124:
123:
119:
116:
113:
110:
107:
106:
102:
99:
96:
93:
90:
89:
84:
82:
77:
75:
71:
67:
60:
55:
51:
43:
41:
36:
32:
23:
19:
1160:
948:
925:. Retrieved
910:
900:
892:the original
884:IBM Archives
883:
858:
852:
835:
831:
821:
808:
804:
798:
787:. Retrieved
774:
768:
751:
745:
734:. Retrieved
721:
715:
706:
700:. Retrieved
683:
670:
662:the original
654:IBM Archives
653:
644:
636:the original
628:IBM Archives
627:
607:the original
599:IBM Archives
598:
578:the original
570:IBM Archives
569:
547:the original
539:IBM Archives
538:
506:
493:
485:
480:
459:
366:
363:
337:
329:
326:
323:
318:
316:
308:
293:
272:APL keyboard
261:
258:New features
253:
248:
246:
238:
235:
230:
228:
220:
214:
207:
195:
193:
183:
181:
120:4 Ă— 370/115
100:Max. memory
78:
63:
49:
40:time-sharing
30:
28:
18:
1313:IBM zSeries
1255:Channel I/O
1250:Bus and Tag
1179:Peripherals
1166:9370 models
1161:43xx models
1140:308X series
1135:303X series
1128:(1977–1990)
1058:(1970–1977)
968:007050686-8
957:. pp.
955:McGraw-Hill
469:UNIVAC 1100
445:Molly-guard
360:) Release 7
353:) Release 6
168:64 MB
151:12 MB
134:16 MB
1348:Categories
1323:System z10
1303:System/370
1298:System/360
1056:System/370
927:2016-05-30
789:2023-03-30
736:2023-03-30
702:2023-03-30
518:References
403:Boeblingen
300:System/360
117:8 MB
97:Withdrawn
94:Announced
35:System/370
1318:System z9
1115:Model 195
1110:Model 168
1105:Model 165
1100:Model 158
1095:Model 155
1090:Model 148
1085:Model 145
1080:Model 138
1075:Model 135
1070:Model 125
1065:Model 115
1007:IBM 4361.
467:, 1960s,
171:9 Ă— 4341
154:3 Ă— 4331
1270:Hercules
1205:Software
997:Archived
921:Archived
473:IBM 7094
418:See also
407:Valencia
395:Endicott
319:IBM 4381
313:IBM 4381
249:IBM 4361
243:IBM 4361
231:IBM 4341
225:IBM 4341
215:IBM 3370
208:IBM 3310
202:(DASD):
196:IBM 4331
190:IBM 4331
184:IBM 4321
178:IBM 4321
81:dual-CPU
74:IBM 3090
70:IBM 9370
25:IBM 4381
1238:Related
1229:TSS/370
1154:Low-end
986:at the
465:IBM 650
344:DOS/VSE
267:system.
1260:ES EVM
1222:OS/VS1
1049:Models
965:
961:-274.
499:DOS/VS
463:1955,
411:Sumare
409:, and
399:Havant
358:OS/VS1
351:VM/370
294:While
91:Model
66:370-XA
46:Models
1333:IBM Z
807:[
779:(PDF)
756:(PDF)
726:(PDF)
688:(PDF)
679:(PDF)
451:Notes
379:Other
165:1992
162:1983
159:4381
148:1987
145:1983
142:4361
131:1986
128:1979
125:4341
114:1981
111:1979
108:4331
1145:3090
1125:30XX
963:ISBN
317:The
247:The
229:The
213:The
206:The
194:The
182:The
72:and
29:The
1003:to
959:269
888:IBM
840:doi
783:IBM
760:IBM
730:IBM
692:IBM
658:IBM
632:IBM
603:IBM
574:IBM
543:IBM
279:APL
1350::
953:.
919:.
886:.
882:.
869:^
834:.
705:.
681:.
656:.
652:.
630:.
626:.
615:^
601:.
597:.
586:^
572:.
568:.
555:^
541:.
537:.
526:^
501:".
471:,
405:,
401:,
397:,
1034:e
1027:t
1020:v
971:.
930:.
846:.
842::
836:5
815:.
792:.
739:.
696:2
475:.
413:.
346:)
285:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
.jpg)