270:, four to a word. The architecture has two modes, Word Mode and Character Mode, and each has a separate repertoire of syllables. A processor may be either Control State or Normal State, and certain syllables are only permissible in Control State. The architecture does not provide for addressing registers or storage directly; all references are through the 1024 word Program Reference Table (PRT), current code segment, marked locations within the stack or to the A and B registers holding the top two locations on the stack. Burroughs numbers bits in a syllable from 0 (high bit) to 11 (low bit) and in a word from 0 (high bit) to 47 (low bit).
951:
761:
134:
38:
79:
679:
For
Operand Call (OPDC) and Descriptor Call (DESC) syllables, the relative address is bits 0-9 (T register) of the syllable. For Store operators (CID, CND, ISD, ISN, STD, STN), the A register (top of stack) contains an absolute address if the Flag bit is set and a relative address if the Flag bit is
349:
The interpretation of the 10-bit relative address in
Operand Call and Descriptor Call depends on the setting of several processor flags. For main programs (SALF off) it is always an offset into the Program Reference Table (PRT).
263:. The Burroughs B5000 instruction set includes the set of valid operations for the B5000, B5500 and B5700. It is not compatible with the B6500, B7500, B8500 or their successors.
992:
51:
20:
985:
235:
217:
198:
115:
97:
65:
170:
1011:
926:
906:
886:
866:
846:
826:
806:
177:
155:
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978:
184:
1016:
57:
166:
1026:
1021:
144:
27:
741:(current instruction word)-relative forced to R (PRT)-relative for Store, Program and I/O Release operators
257:
191:
874:, Systems Documentation, Burroughs Corporation, May 1967, p. 8-1 – 8-9, 1021326
854:, Systems Documentation, Burroughs Corporation, May 1967, p. 7-1 – 7-7, 1021326
958:
962:
260:
950:
760:
1005:
253:
834:, Systems Documentation, Burroughs Corporation, May 1967, pp. 6-1–6-32, 1021326
814:, Systems Documentation, Burroughs Corporation, May 1967, pp. 5-1–5-21, 1021326
133:
914:, Systems Documentation, Burroughs Corporation, May 1967, p. 5-2, 1021326.
894:, Systems Documentation, Burroughs Corporation, May 1967, p. 5-2, 1021326.
934:, Systems Documentation, Burroughs Corporation, May 1967, p. 5-4, 1021326
267:
88:
provides insufficient context for those unfamiliar with the subject
928:
Burroughs B5500 Information
Processing Systems Reference Manual
908:
Burroughs B5500 Information
Processing Systems Reference Manual
888:
Burroughs B5500 Information
Processing Systems Reference Manual
868:
Burroughs B5500 Information
Processing Systems Reference Manual
848:
Burroughs B5500 Information
Processing Systems Reference Manual
828:
Burroughs B5500 Information
Processing Systems Reference Manual
808:
Burroughs B5500 Information
Processing Systems Reference Manual
755:
127:
72:
31:
966:
772:
93:
278:In Word Mode, there are four types of syllables.
266:Instruction streams on a B5000 contain 12-bit
16:Syllable repertoire for B5000, B5500 and B5700
986:
8:
66:Learn how and when to remove these messages
993:
979:
236:Learn how and when to remove this message
218:Learn how and when to remove this message
116:Learn how and when to remove this message
352:
280:
825:"6 Word Mode Syllables and Operators",
797:
707:
705:
703:
701:
648:
341:
328:
722:
720:
688:
686:
642:
154:Please improve this article by adding
591:Address of last RCW or MSCW on stack
487:Address of last RCW or MSCW on stack
98:providing more context for the reader
7:
947:
945:
557:Address of current instruction word
28:Burroughs large systems § B5000
21:Burroughs B6x00-7x00 instruction set
256:and also the first computer with a
14:
47:This article has multiple issues.
949:
759:
132:
77:
36:
55:or discuss these issues on the
865:"8 Character Mode Operators",
845:"7 Character Mode Operation",
627:F register from MSCW at PRT+7
523:F register from MSCW at PRT+7
1:
156:secondary or tertiary sources
965:. You can help Knowledge by
925:"5.9. Relative Addressing",
729:register from MSCW at PRT+7
1043:
944:
695: Return Control Word
354:B5x00 Relative Addressing
282:B5x00 Word Mode Syllables
25:
18:
805:"5 Word Mode Operation",
658:Subroutine Level Flipflop
393:
388:
385:
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379:
376:
371:
366:
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358:
294:
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286:
19:Not to be confused with
1012:Computer hardware stubs
714:Mark Stack Control Word
167:"B5000 instruction set"
885:"5.5. Syllable Type",
143:relies excessively on
670:Mark Stack FlipFlop
355:
283:
94:improve the article
771:. You can help by
353:
281:
1017:Computer hardware
974:
973:
959:computer hardware
905:"5.6. Bits 0-9",
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126:
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342:Relative address
338:Descriptor Call
329:Relative address
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769:needs expansion
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453:Address of PRT
426:
419:Address of PRT
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250:Burroughs B5000
242:
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149:primary sources
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30:
24:
17:
12:
11:
5:
1040:
1038:
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1027:Virtual memory
1024:
1022:Stack machines
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752:Character Mode
750:
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306:integer value
304:
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292:Syllable Type
290:
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261:virtual memory
252:was the first
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140:
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45:
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35:
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13:
10:
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961:article is a
960:
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780:February 2023
774:
770:
767:This section
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409:
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403:
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357:
351:
343:
340:
337:
334:
333:
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325:Operand Call
324:
321:
320:
316:
313:
310:
309:
305:
303:Literal Call
302:
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298:
285:
279:
273:
271:
269:
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259:
255:
254:stack machine
251:
240:
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222:
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211:
200:
197:
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179:
176:
172:
169: –
168:
164:
163:Find sources:
157:
151:
150:
146:
141:This article
139:
135:
130:
129:
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117:
109:
99:
95:
89:
86:This article
84:
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69:
67:
60:
59:
54:
53:
48:
43:
34:
33:
29:
22:
967:expanding it
956:
941:
927:
920:
907:
900:
887:
880:
867:
860:
847:
840:
827:
820:
807:
800:
777:
773:adding to it
768:
738:
734:
726:
711:
692:
675:
667:
663:
655:
651:
643:
348:
277:
265:
249:
247:
232:
214:
205:
195:
188:
181:
174:
162:
142:
112:
103:
92:Please help
87:
63:
56:
50:
49:Please help
46:
624:Bits 18-32
520:Bits 18-32
386:Index Sign
1006:Categories
792:References
317:Operation
178:newspapers
145:references
52:improve it
26:See also:
383:Contents
295:Bits 0-9
274:Word Mode
268:syllables
258:segmented
208:July 2020
106:July 2020
58:talk page
635:A 41-47
599:A 41-47
565:A 41-47
531:A 40-47
495:A 40-47
461:A 39-47
427:A 38-47
314:Opcode
192:scholar
644:Notes:
396:Index
289:10-11
194:
187:
180:
173:
165:
957:This
932:(PDF)
912:(PDF)
892:(PDF)
872:(PDF)
852:(PDF)
832:(PDF)
812:(PDF)
633:T 3-9
622:(R+7)
597:T 3-9
563:T 3-9
529:T 2-9
518:(R+7)
493:T 2-9
459:T 1-9
430:1023
425:T 0-9
391:Bits
389:Index
380:Base
377:MSFF
359:SALF
199:JSTOR
185:books
963:stub
712:MSCW
680:off.
668:MSFF
656:SALF
638:127
602:127
585:OFF
568:127
548:OFF
534:255
509:OFF
498:255
481:OFF
475:OFF
464:511
438:OFF
401:OFF
374:A40
369:A39
364:A38
287:Bits
248:The
171:news
775:.
693:RCW
619:ON
616:ON
613:ON
610:ON
607:ON
582:ON
579:ON
576:ON
573:ON
545:ON
542:ON
539:ON
515:ON
506:ON
503:ON
472:ON
469:ON
435:ON
394:Max
147:to
96:by
1008::
719:^
700:^
685:^
630:-
594:-
588:F
560:+
554:C
551:-
526:+
512:-
490:+
484:F
478:-
456:+
450:R
447:-
444:-
441:-
422:+
416:R
413:-
410:-
407:-
404:-
372:T2
367:T1
362:T0
335:3
322:2
311:1
300:0
158:.
61:.
994:e
987:t
980:v
969:.
782:)
778:(
739:C
727:F
239:)
233:(
221:)
215:(
210:)
206:(
196:·
189:·
182:·
175:·
152:.
119:)
113:(
108:)
104:(
100:.
90:.
68:)
64:(
23:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
