JPS5471533A - Arithmetic logic operation circuit - Google Patents
Arithmetic logic operation circuitInfo
- Publication number
- JPS5471533A JPS5471533A JP13781777A JP13781777A JPS5471533A JP S5471533 A JPS5471533 A JP S5471533A JP 13781777 A JP13781777 A JP 13781777A JP 13781777 A JP13781777 A JP 13781777A JP S5471533 A JPS5471533 A JP S5471533A
- Authority
- JP
- Japan
- Prior art keywords
- alu
- control circuit
- bit
- data
- arithmetic logic
- 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.)
- Pending
Links
Abstract
PURPOSE: To simultaneously process a plurality of data words and to speed up the processing, by performing parallel precessing operation through split of the arithmetic logic operation circuit, when a plurality of data words are stored logically in one word of the computer.
CONSTITUTION: In the operation circuit having the arithmetic logic operation circuit ALU1 of lower 16-bit and ALU2 of upper 16-bit and providing the carry control circuit 3, ALU operation control circuit 4, data registers 5, 6 and output register 7, the function indicating two sets of ALU 1, 2 for split and consolidation is given to the control circuit 3. Further, in operating the data in 32-bit, the data from the bus 8 is allocated in the registers 5 and 6, the control signal D to the control circuit 3 is made in high level, the AND gate 9 provided with the control circuit 3 is opened, the carry signal CP from ALU 1 is fed to ALU 2 via the OR gate 10, 32-bit operation is made with ALU 1, 2, and it is transferred to the bus 8 via the registers 7 and 8.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13781777A JPS5471533A (en) | 1977-11-18 | 1977-11-18 | Arithmetic logic operation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13781777A JPS5471533A (en) | 1977-11-18 | 1977-11-18 | Arithmetic logic operation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5471533A true JPS5471533A (en) | 1979-06-08 |
Family
ID=15207538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13781777A Pending JPS5471533A (en) | 1977-11-18 | 1977-11-18 | Arithmetic logic operation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5471533A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6186839A (en) * | 1984-10-05 | 1986-05-02 | Hitachi Ltd | Arithmetic processor |
JPS63216170A (en) * | 1987-03-05 | 1988-09-08 | Mitsubishi Electric Corp | Digital signal processor |
JPH0784758A (en) * | 1994-07-15 | 1995-03-31 | Hitachi Ltd | Arithmetic processor |
-
1977
- 1977-11-18 JP JP13781777A patent/JPS5471533A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6186839A (en) * | 1984-10-05 | 1986-05-02 | Hitachi Ltd | Arithmetic processor |
JPS63216170A (en) * | 1987-03-05 | 1988-09-08 | Mitsubishi Electric Corp | Digital signal processor |
JPH0784758A (en) * | 1994-07-15 | 1995-03-31 | Hitachi Ltd | Arithmetic processor |
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