AU545326B2

AU545326B2 – Data processor performing a decimal multiply operation using a read only memory
– Google Patents

AU545326B2 – Data processor performing a decimal multiply operation using a read only memory
– Google Patents
Data processor performing a decimal multiply operation using a read only memory

Info

Publication number
AU545326B2

AU545326B2
AU78851/81A
AU7885181A
AU545326B2
AU 545326 B2
AU545326 B2
AU 545326B2
AU 78851/81 A
AU78851/81 A
AU 78851/81A
AU 7885181 A
AU7885181 A
AU 7885181A
AU 545326 B2
AU545326 B2
AU 545326B2
Authority
AU
Australia
Prior art keywords
read
memory
data processor
processor performing
multiply operation
Prior art date
1980-12-24
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.)

Ceased

Application number
AU78851/81A
Other versions

AU7885181A
(en

Inventor
Virendra S. Negi
Steven A. Tague
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 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.)
1980-12-24
Filing date
1981-12-23
Publication date
1985-07-11

1981-12-23
Application filed by Honeywell Information Systems Italia SpA, Honeywell Information Systems Inc
filed
Critical
Honeywell Information Systems Italia SpA

1982-07-01
Publication of AU7885181A
publication
Critical
patent/AU7885181A/en

1985-07-11
Application granted
granted
Critical

1985-07-11
Publication of AU545326B2
publication
Critical
patent/AU545326B2/en

2001-12-23
Anticipated expiration
legal-status
Critical

Status
Ceased
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

G06F7/52—Multiplying; Dividing

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.

G06F7/4915—Multiplying; Dividing

AU78851/81A
1980-12-24
1981-12-23
Data processor performing a decimal multiply operation using a read only memory

Ceased

AU545326B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

US06/220,218

US4390961A
(en)

1980-12-24
1980-12-24
Data processor performing a decimal multiply operation using a read only memory

US220218

1980-12-24

Publications (2)

Publication Number
Publication Date

AU7885181A

AU7885181A
(en)

1982-07-01

AU545326B2
true

AU545326B2
(en)

1985-07-11

Family
ID=22822594
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU78851/81A
Ceased

AU545326B2
(en)

1980-12-24
1981-12-23
Data processor performing a decimal multiply operation using a read only memory

Country Status (11)

Country
Link

US
(1)

US4390961A
(en)

JP
(1)

JPS57172445A
(en)

KR
(1)

KR860001433B1
(en)

AU
(1)

AU545326B2
(en)

BR
(1)

BR8108198A
(en)

CA
(1)

CA1171181A
(en)

ES
(1)

ES8304680A1
(en)

FI
(1)

FI78186C
(en)

MX
(1)

MX151461A
(en)

PH
(1)

PH19918A
(en)

YU
(1)

YU43057B
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

AU573246B2
(en)

*

1983-08-24
1988-06-02
Amdahl Corporation
Signed multiplier

Families Citing this family (20)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4566075A
(en)

*

1982-12-21
1986-01-21
Texas Instruments Incorporated
Table lookup multiplier employing compressed data read only memory

US4604695A
(en)

*

1983-09-30
1986-08-05
Honeywell Information Systems Inc.
Nibble and word addressable memory arrangement

US4615016A
(en)

*

1983-09-30
1986-09-30
Honeywell Information Systems Inc.
Apparatus for performing simplified decimal multiplication by stripping leading zeroes

US4608659A
(en)

*

1983-09-30
1986-08-26
Honeywell Information Systems Inc.
Arithmetic logic unit with outputs indicating invalid computation results caused by invalid operands

US4604722A
(en)

*

1983-09-30
1986-08-05
Honeywell Information Systems Inc.
Decimal arithmetic logic unit for doubling or complementing decimal operand

US4638450A
(en)

*

1983-09-30
1987-01-20
Honeywell Information Systems Inc.
Equal nine apparatus for supporting absolute value subtracts on decimal operands of unequal length

US4672360A
(en)

*

1983-09-30
1987-06-09
Honeywell Information Systems Inc.
Apparatus and method for converting a number in binary format to a decimal format

US4942547A
(en)

*

1985-04-11
1990-07-17
Honeywell Bull, Inc.
Multiprocessors on a single semiconductor chip

US4799181A
(en)

*

1986-09-30
1989-01-17
Honeywell Bull Inc.
BCD arithmetic using binary arithmetic and logical operations

US5212662A
(en)

*

1989-01-13
1993-05-18
International Business Machines Corporation
Floating point arithmetic two cycle data flow

US4999802A
(en)

*

1989-01-13
1991-03-12
International Business Machines Corporation
Floating point arithmetic two cycle data flow

US5440749A
(en)

*

1989-08-03
1995-08-08
Nanotronics Corporation
High performance, low cost microprocessor architecture

US5822609A
(en)

*

1995-06-22
1998-10-13
International Business Machines Corporation
Processing circuit for performing a convolution computation

US5737257A
(en)

*

1995-09-13
1998-04-07
Holtek Microelectronics, Inc.
Method and apparatus for compression of integer multiplication table

US7266580B2
(en)

*

2003-05-12
2007-09-04
International Business Machines Corporation
Modular binary multiplier for signed and unsigned operands of variable widths

US20050022322A1
(en)

*

2003-05-12
2005-02-03
Eduardo Jimenez
Powered toothbrush with curved neck and flexible shaft and single battery

US7167889B2
(en)

2003-05-12
2007-01-23
International Business Machines Corporation
Decimal multiplication for superscaler processors

US7136893B2
(en)

*

2003-07-10
2006-11-14
International Business Machines Corporation
Decimal multiplication using digit recoding

US10241757B2
(en)

2016-09-30
2019-03-26
International Business Machines Corporation
Decimal shift and divide instruction

US10127015B2
(en)

2016-09-30
2018-11-13
International Business Machines Corporation
Decimal multiply and shift instruction

Family Cites Families (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3551663A
(en)

*

1965-04-15
1970-12-29
Gen Electric
Multiplication apparatus in a data processing system with a variable length multiplier

JPS4940037A
(en)

*

1972-08-17
1974-04-15

JPS50159223A
(en)

*

1974-06-12
1975-12-23

JPS5569850A
(en)

*

1978-11-22
1980-05-26
Toshiba Corp
Decimal multiplication system

1980

1980-12-24
US
US06/220,218
patent/US4390961A/en
not_active
Expired – Fee Related

1981

1981-12-09
CA
CA000391904A
patent/CA1171181A/en
not_active
Expired

1981-12-11
MX
MX190572A
patent/MX151461A/en
unknown

1981-12-16
BR
BR8108198A
patent/BR8108198A/en
unknown

1981-12-16
PH
PH26635A
patent/PH19918A/en
unknown

1981-12-16
FI
FI814045A
patent/FI78186C/en
not_active
IP Right Cessation

1981-12-17
KR
KR1019810004965A
patent/KR860001433B1/en
active

1981-12-23
AU
AU78851/81A
patent/AU545326B2/en
not_active
Ceased

1981-12-23
ES
ES508299A
patent/ES8304680A1/en
not_active
Expired

1981-12-23
YU
YU3061/81A
patent/YU43057B/en
unknown

1981-12-24
JP
JP56208240A
patent/JPS57172445A/en
active
Pending

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

AU573246B2
(en)

*

1983-08-24
1988-06-02
Amdahl Corporation
Signed multiplier

Also Published As

Publication number
Publication date

ES508299A0
(en)

1983-03-01

MX151461A
(en)

1984-11-28

US4390961A
(en)

1983-06-28

KR830008239A
(en)

1983-11-16

FI78186C
(en)

1989-06-12

BR8108198A
(en)

1982-09-28

YU306181A
(en)

1983-12-31

JPS57172445A
(en)

1982-10-23

PH19918A
(en)

1986-08-14

YU43057B
(en)

1989-02-28

FI78186B
(en)

1989-02-28

ES8304680A1
(en)

1983-03-01

CA1171181A
(en)

1984-07-17

FI814045L
(en)

1982-06-25

AU7885181A
(en)

1982-07-01

KR860001433B1
(en)

1986-09-24

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