FR2445985A1 - DECIMAL UNIT OF A MICROPROGRAMMED DATA PROCESSING SYSTEM - Google Patents

DECIMAL UNIT OF A MICROPROGRAMMED DATA PROCESSING SYSTEM

Info

Publication number
FR2445985A1
FR2445985A1 FR7931269A FR7931269A FR2445985A1 FR 2445985 A1 FR2445985 A1 FR 2445985A1 FR 7931269 A FR7931269 A FR 7931269A FR 7931269 A FR7931269 A FR 7931269A FR 2445985 A1 FR2445985 A1 FR 2445985A1
Authority
FR
France
Prior art keywords
unit
decimal
processing system
data processing
decimal unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7931269A
Other languages
French (fr)
Other versions
FR2445985B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bull HN Information Systems Italia SpA
Bull HN Information Systems Inc
Original Assignee
Honeywell Information Systems Italia SpA
Honeywell Information Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/000,232 external-priority patent/US4247891A/en
Priority claimed from US06/000,222 external-priority patent/US4224677A/en
Application filed by Honeywell Information Systems Italia SpA, Honeywell Information Systems Inc filed Critical Honeywell Information Systems Italia SpA
Publication of FR2445985A1 publication Critical patent/FR2445985A1/en
Application granted granted Critical
Publication of FR2445985B1 publication Critical patent/FR2445985B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/491—Computations with decimal numbers radix 12 or 20.

Abstract

L'invention concerne une unité décimale, dans un système de traitements de données. Cette unité décimale 730 qui intervient dans le système de traitement 700, est reliée à une unité de commande d'exécution 701, à une unité de commande 704, à une unité de caractère 720, à une unité de commande auxiliaire 722, du système de traitement Cette unité décimale est constituée de manière à permettre le comptage des nombres de chiffres réels ou de zéros, dans les opérandes intervenant dans le système. Application à la modification des opérandes numériques décimaux intervenant dans une unité d'exécution microprogrammée, dans une unité de traitement.The invention relates to a decimal unit, in a data processing system. This decimal unit 730 which intervenes in the processing system 700, is connected to an execution control unit 701, to a control unit 704, to a character unit 720, to an auxiliary control unit 722, of the control system. processing This decimal unit is constituted in such a way as to allow the counting of the numbers of real digits or of zeros, in the operands intervening in the system. Application to the modification of the decimal digital operands occurring in a microprogrammed execution unit, in a processing unit.

FR7931269A 1979-01-02 1979-12-20 DECIMAL UNIT OF A MICROPROGRAMMED DATA PROCESSING SYSTEM Granted FR2445985A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/000,232 US4247891A (en) 1979-01-02 1979-01-02 Leading zero count formation
US06/000,222 US4224677A (en) 1979-01-02 1979-01-02 Effective digit count on a resultant operand

Publications (2)

Publication Number Publication Date
FR2445985A1 true FR2445985A1 (en) 1980-08-01
FR2445985B1 FR2445985B1 (en) 1985-05-17

Family

ID=26667354

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931269A Granted FR2445985A1 (en) 1979-01-02 1979-12-20 DECIMAL UNIT OF A MICROPROGRAMMED DATA PROCESSING SYSTEM

Country Status (3)

Country Link
DE (1) DE3000006A1 (en)
FR (1) FR2445985A1 (en)
GB (2) GB2039104B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219982A (en) * 1961-11-14 1965-11-23 Ibm High order mark system
US3571803A (en) * 1968-06-04 1971-03-23 Bell Telephone Labor Inc Arithmetic unit for data processing systems
US3577130A (en) * 1969-10-03 1971-05-04 Fairchild Camera Instr Co Means for limiting field length of computed data
US3678259A (en) * 1970-07-28 1972-07-18 Singer Co Asynchronous logic for determining number of leading zeros in a digital word
US3751650A (en) * 1971-06-28 1973-08-07 Burroughs Corp Variable length arithmetic unit
US4021655A (en) * 1976-03-30 1977-05-03 International Business Machines Corporation Oversized data detection hardware for data processors which store data at variable length destinations
FR2382050A1 (en) * 1977-02-28 1978-09-22 Singer Co ZERO DETECTOR FOR USE WITH TORES MEMORY

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739352A (en) * 1971-06-28 1973-06-12 Burroughs Corp Variable word width processor control

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219982A (en) * 1961-11-14 1965-11-23 Ibm High order mark system
US3571803A (en) * 1968-06-04 1971-03-23 Bell Telephone Labor Inc Arithmetic unit for data processing systems
US3577130A (en) * 1969-10-03 1971-05-04 Fairchild Camera Instr Co Means for limiting field length of computed data
US3678259A (en) * 1970-07-28 1972-07-18 Singer Co Asynchronous logic for determining number of leading zeros in a digital word
US3751650A (en) * 1971-06-28 1973-08-07 Burroughs Corp Variable length arithmetic unit
US4021655A (en) * 1976-03-30 1977-05-03 International Business Machines Corporation Oversized data detection hardware for data processors which store data at variable length destinations
FR2382050A1 (en) * 1977-02-28 1978-09-22 Singer Co ZERO DETECTOR FOR USE WITH TORES MEMORY

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 17, no. 10, mars 1975, pages 2844-2845 *

Also Published As

Publication number Publication date
GB2114785B (en) 1984-01-18
DE3000006C2 (en) 1988-12-29
GB2114785A (en) 1983-08-24
FR2445985B1 (en) 1985-05-17
DE3000006A1 (en) 1980-07-10
GB2039104A (en) 1980-07-30
GB2039104B (en) 1983-09-01

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Legal Events

Date Code Title Description
ST Notification of lapse