1124:
243:
27:
1134:
153:
313:, of which 120 were sold, was described as "highly successful". The PDP-9 sold 445 units. Both have submodels, the PDP-7A and the PDP-9/L, neither of which accounted for a substantial percentage of sales.
208:
terminal. The PDP-9 has a memory cycle time of 1 microsecond, and weighs about 750 pounds (340 kg). The PDP-9/L has a memory cycle time of 1.5 microseconds, and weighs about 900 pounds (410 kg).
284:
The system came with an OS that functions as single-user keyboard monitor, called ADSS (ADvanced
Software System). DECsys provided an interactive, single-user, program development environment for
204:
The PDP-9, which is "two metres wide and about 75cm deep," is approximately twice the speed of the PDP-7. It was built using discrete transistors, and has an optional integrated
36:
246:
Model 33 Teleprinter, similar to the PDP-9's console device, though the PDP-9 had faster dedicated paper tape devices instead of the integrated reader/punch.
643:
1226:
391:
1192:
1137:
690:
172:, was introduced in 1966. A total of 445 PDP-9 systems were produced, of which 40 were the compact, low-cost PDP-9/L units.
1221:
521:
254:
the addition of status flags for reader and punch errors, thus providing added flexibility and for error detection
1094:
1048:
298:
1185:
699:
169:
46:
1078:
992:
417:
482:
1231:
868:
538:
608:
1211:
683:
650:
257:
an entirely new design for multi-level interrupts, called the
Automatic Priority Interrupt (API) option
463:
1216:
708:
322:
269:
56:
1178:
591:
574:
1127:
949:
555:
505:
1109:
676:
1099:
1058:
668:
8:
272:, at a time when machines in this price range used software for floating-point arithmetic
113:
609:"Software Product Description, ADSS-B/F-15, Version SC, Advanced Software System, B/F"
500:
1007:
517:
504:; Gerald Butler; Robert Gray; John E. McNamara; Donald Vonada; Ronald Wilson (1978).
236:
855:
827:
764:
726:
1104:
205:
626:
1166:
1162:
997:
1205:
1053:
513:
1015:
1158:
1073:
1043:
1038:
845:
165:
66:
982:
432:
1068:
967:
919:
501:
264:
User/university-based research projects for extending the PDP-9 include:
446:
297:
was originally developed on the PDP-7, and ran on several PDP-9s at the
1063:
987:
914:
220:
102:
1030:
1020:
924:
250:
Among the improvements of the PDP-9 over its PDP-7 predecessor are:
242:
939:
934:
929:
909:
904:
393:
DIGITAL EQUIPMENT CORPORATION - Nineteen Fifty-Seven To The
Present
972:
806:
794:
285:
229:
106:
26:
899:
863:
840:
811:
801:
777:
754:
327:
291:
Both FORTRAN II and FORTRAN IV were implemented for the PDP-9.
193:
144:
508:. In C. Gordon Bell; J. Craig Mudge; John E. McNamara (eds.).
152:
977:
944:
835:
789:
784:
744:
739:
734:
310:
294:
189:
185:
181:
134:
772:
698:
576:
Design of a floating point processor for the PDP-9 computer
510:
Computer
Engineering: A DEC View of Hardware Systems Design
959:
891:
606:
593:
The logic design of a PDP-9 controlled parallel computer
365:
directly mentioned for one, calculated in the other case
35:
347:
sometimes identified by customers and media as PDP-7/A
356:
yes, DEC had a "slash" for the 9/L but not for the 7A
589:
458:
456:
180:The 18-bit PDP systems preceding the PDP-9 are the
418:"RI Computer Museum, DEC PDP-9, System Number 319"
506:"Chapter 6: The PDP-1 and Other 18-bit Computers"
453:
1203:
539:"Architectural Evolution in DEC's 18b Computers"
156:A PDP-9 on display at ACONIT in Grenoble, France
572:
1186:
684:
653:Hybrid Computation Laboratory. September 1968
386:
384:
382:
212:It is DEC's first microprogrammed machine.
1193:
1179:
691:
677:
644:"User Manual - Linkage - PDP-9 Facilities"
624:
34:
25:
379:
260:a more advanced form of memory management
241:
151:
1095:Compaq Professional Workstation 1000 XP
1227:Computer-related introductions in 1966
1204:
618:
536:
412:
410:
408:
406:
399:. Digital Equipment Corporation. 1975.
672:
530:
1152:
1133:
596:(MSc thesis). University of Arizona.
579:(MSc thesis). University of Arizona.
275:a PDP-9 controlled parallel computer
424:
403:
232:for operating system and user files
13:
465:PDP-9 Maintenance Manual, Volume 1
215:A typical configuration included:
16:18-bit computer from Digital, 1966
14:
1243:
237:console teleprinter, Model 33 KSR
1132:
1123:
1122:
433:"The Early Architectures of DEC"
288:and assembly language programs.
164:, the fourth of the five 18-bit
636:
607:Digital Equipment Corporation.
600:
583:
566:
556:"PDP 9 Simulator Configuration"
359:
350:
341:
1049:DEC 7000 AXP and DEC 10000 AXP
548:
494:
475:
439:
299:Massachusetts General Hospital
1:
700:Digital Equipment Corporation
590:Wokhlu, Roop Krishen (1969).
372:
170:Digital Equipment Corporation
47:Digital Equipment Corporation
1165:. You can help Knowledge by
1079:Digital Personal Workstation
993:Digital Personal Workstation
7:
627:"Technical Notes on DECsys"
625:Bob Supnik (19 June 2006).
316:
279:
199:
78:; 58 years ago
10:
1248:
1151:
651:Carnegie-Mellon University
447:"David Millson - 50 years"
268:a hardware capability for
175:
1118:
1087:
1029:
1006:
958:
890:
854:
826:
763:
725:
716:
707:
323:Programmed Data Processor
270:floating-point arithmetic
140:
130:
122:
112:
98:
90:
72:
62:
57:Programmed Data Processor
52:
42:
33:
24:
1222:Transistorized computers
573:Ben Milton Huey (1969).
334:
330:- successor to the PDP-9
304:
126:750 pounds (340 kg)
226:50 cps paper tape punch
192:. Its successor is the
1161:-related article is a
950:VAX 7000 and VAX 10000
247:
157:
1110:List of VAX computers
484:PDP-9/L User Handbook
245:
155:
1100:Itsy Pocket Computer
516:. pp. 154–155.
21:
1232:Minicomputer stubs
248:
158:
19:
1212:DEC minicomputers
1174:
1173:
1146:
1145:
1021:DECsystem servers
886:
885:
881:
880:
877:
876:
820:
819:
150:
149:
1239:
1217:18-bit computers
1195:
1188:
1181:
1153:
1136:
1135:
1126:
1125:
869:DEC Professional
824:
823:
723:
722:
719:
718:
714:
713:
693:
686:
679:
670:
669:
663:
662:
660:
658:
648:
640:
634:
633:
631:
622:
616:
615:
613:
604:
598:
597:
587:
581:
580:
570:
564:
563:
552:
546:
545:
543:
534:
528:
527:
498:
492:
491:
489:
479:
473:
472:
470:
460:
451:
450:
443:
437:
436:
428:
422:
421:
414:
401:
400:
398:
388:
366:
363:
357:
354:
348:
345:
86:
84:
79:
38:
29:
22:
18:
1247:
1246:
1242:
1241:
1240:
1238:
1237:
1236:
1202:
1201:
1200:
1199:
1149:
1147:
1142:
1114:
1105:Jupiter project
1083:
1025:
1002:
954:
882:
873:
850:
816:
759:
703:
697:
667:
666:
656:
654:
646:
642:
641:
637:
629:
623:
619:
611:
605:
601:
588:
584:
571:
567:
554:
553:
549:
541:
535:
531:
524:
499:
495:
487:
481:
480:
476:
468:
462:
461:
454:
445:
444:
440:
431:
429:
425:
416:
415:
404:
396:
390:
389:
380:
375:
370:
369:
364:
360:
355:
351:
346:
342:
337:
319:
307:
282:
206:vector graphics
202:
178:
82:
80:
77:
17:
12:
11:
5:
1245:
1235:
1234:
1229:
1224:
1219:
1214:
1198:
1197:
1190:
1183:
1175:
1172:
1171:
1144:
1143:
1141:
1140:
1130:
1119:
1116:
1115:
1113:
1112:
1107:
1102:
1097:
1091:
1089:
1085:
1084:
1082:
1081:
1076:
1071:
1066:
1061:
1056:
1051:
1046:
1041:
1035:
1033:
1027:
1026:
1024:
1023:
1018:
1012:
1010:
1004:
1003:
1001:
1000:
995:
990:
985:
980:
975:
970:
964:
962:
956:
955:
953:
952:
947:
942:
937:
932:
927:
922:
917:
912:
907:
902:
896:
894:
888:
887:
884:
883:
879:
878:
875:
874:
872:
871:
866:
860:
858:
852:
851:
849:
848:
843:
838:
832:
830:
821:
818:
817:
815:
814:
809:
804:
799:
798:
797:
787:
782:
781:
780:
769:
767:
761:
760:
758:
757:
752:
747:
742:
737:
731:
729:
717:
711:
705:
704:
696:
695:
688:
681:
673:
665:
664:
635:
617:
599:
582:
565:
547:
529:
522:
502:C. Gordon Bell
493:
474:
452:
438:
423:
402:
377:
376:
374:
371:
368:
367:
358:
349:
339:
338:
336:
333:
332:
331:
325:
318:
315:
306:
303:
281:
278:
277:
276:
273:
262:
261:
258:
255:
240:
239:
233:
227:
224:
201:
198:
177:
174:
148:
147:
142:
138:
137:
132:
128:
127:
124:
120:
119:
116:
110:
109:
100:
96:
95:
92:
88:
87:
74:
70:
69:
64:
60:
59:
54:
53:Product family
50:
49:
44:
40:
39:
31:
30:
15:
9:
6:
4:
3:
2:
1244:
1233:
1230:
1228:
1225:
1223:
1220:
1218:
1215:
1213:
1210:
1209:
1207:
1196:
1191:
1189:
1184:
1182:
1177:
1176:
1170:
1168:
1164:
1160:
1155:
1154:
1150:
1139:
1131:
1129:
1121:
1120:
1117:
1111:
1108:
1106:
1103:
1101:
1098:
1096:
1093:
1092:
1090:
1086:
1080:
1077:
1075:
1072:
1070:
1067:
1065:
1062:
1060:
1057:
1055:
1054:DECpc AXP 150
1052:
1050:
1047:
1045:
1042:
1040:
1037:
1036:
1034:
1032:
1028:
1022:
1019:
1017:
1014:
1013:
1011:
1009:
1005:
999:
996:
994:
991:
989:
986:
984:
981:
979:
976:
974:
971:
969:
966:
965:
963:
961:
957:
951:
948:
946:
943:
941:
938:
936:
933:
931:
928:
926:
923:
921:
918:
916:
913:
911:
908:
906:
903:
901:
898:
897:
895:
893:
889:
870:
867:
865:
862:
861:
859:
857:
853:
847:
844:
842:
839:
837:
834:
833:
831:
829:
825:
822:
813:
810:
808:
805:
803:
800:
796:
793:
792:
791:
788:
786:
783:
779:
776:
775:
774:
771:
770:
768:
766:
762:
756:
753:
751:
748:
746:
743:
741:
738:
736:
733:
732:
730:
728:
724:
721:
720:
715:
712:
710:
706:
701:
694:
689:
687:
682:
680:
675:
674:
671:
652:
645:
639:
628:
621:
610:
603:
595:
594:
586:
578:
577:
569:
561:
557:
551:
540:
533:
525:
523:0-932376-00-2
519:
515:
514:Digital Press
511:
507:
503:
497:
486:
485:
478:
471:. April 1972.
467:
466:
459:
457:
448:
442:
434:
427:
419:
413:
411:
409:
407:
395:
394:
387:
385:
383:
378:
362:
353:
344:
340:
329:
326:
324:
321:
320:
314:
312:
302:
300:
296:
292:
289:
287:
274:
271:
267:
266:
265:
259:
256:
253:
252:
251:
244:
238:
234:
231:
228:
225:
222:
218:
217:
216:
213:
210:
207:
197:
195:
191:
187:
183:
173:
171:
167:
166:minicomputers
163:
154:
146:
143:
139:
136:
133:
129:
125:
121:
117:
115:
111:
108:
104:
101:
97:
93:
89:
75:
71:
68:
65:
61:
58:
55:
51:
48:
45:
41:
37:
32:
28:
23:
1167:expanding it
1159:minicomputer
1156:
1148:
1074:AlphaStation
1059:DEC 2000 AXP
1044:DEC 4000 AXP
1039:DEC 3000 AXP
846:DECSYSTEM-20
749:
657:19 September
655:. Retrieved
638:
620:
602:
592:
585:
575:
568:
559:
550:
537:Bob Supnik.
532:
509:
496:
490:. June 1968.
483:
477:
464:
441:
426:
392:
361:
352:
343:
308:
293:
290:
283:
263:
249:
214:
211:
203:
179:
168:produced by
161:
159:
73:Release date
67:Minicomputer
1069:AlphaServer
968:Rainbow 100
131:Predecessor
1206:Categories
1016:DECstation
983:DECstation
915:VAXstation
560:GitHub.com
373:References
221:paper tape
118:DEC 18-bit
103:Paper tape
91:Units sold
925:VAXserver
702:computers
141:Successor
43:Developer
1128:Category
1088:See also
940:VAX 9000
935:VAX 4000
930:VAX 6000
910:VAX 8000
905:MicroVAX
317:See also
280:Software
219:300 cps
200:Hardware
114:Platform
1138:Commons
973:VAXmate
920:Firefly
807:DECmate
795:PDP-8/e
286:Fortran
235:10 cps
230:DECtape
176:History
107:DECtape
81: (
1064:Multia
998:HiNote
988:Multia
900:VAX-11
864:PDP-11
856:16-bit
841:PDP-10
828:36-bit
812:PDP-14
802:PDP-12
778:LINC-8
765:12-bit
755:PDP-15
727:18-bit
520:
328:PDP-15
223:reader
194:PDP-15
145:PDP-15
1157:This
1031:Alpha
978:DECpc
945:VAXft
836:PDP-6
790:PDP-8
785:PDP-5
750:PDP-9
745:PDP-7
740:PDP-4
735:PDP-1
647:(PDF)
630:(PDF)
612:(PDF)
542:(PDF)
488:(PDF)
469:(PDF)
397:(PDF)
335:Notes
311:PDP-7
305:Sales
295:MUMPS
190:PDP-7
186:PDP-4
182:PDP-1
162:PDP-9
135:PDP-7
99:Media
20:PDP-9
1163:stub
1008:MIPS
773:LINC
659:2017
518:ISBN
309:The
188:and
160:The
123:Mass
83:1966
76:1966
63:Type
960:x86
892:VAX
709:PDP
94:445
1208::
649:.
558:.
512:.
455:^
405:^
381:^
301:.
196:.
184:,
105:,
1194:e
1187:t
1180:v
1169:.
692:e
685:t
678:v
661:.
632:.
614:.
562:.
544:.
526:.
449:.
435:.
430:.
420:.
85:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
