JPS6459538A - Data processor - Google Patents
Data processorInfo
- Publication number
- JPS6459538A JPS6459538A JP20943387A JP20943387A JPS6459538A JP S6459538 A JPS6459538 A JP S6459538A JP 20943387 A JP20943387 A JP 20943387A JP 20943387 A JP20943387 A JP 20943387A JP S6459538 A JPS6459538 A JP S6459538A
- Authority
- JP
- Japan
- Prior art keywords
- stack
- alu
- input terminal
- arithmetic
- result
- 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
Landscapes
- Devices For Executing Special Programs (AREA)
Abstract
PURPOSE: To reduce the data transfer frequency that is needed for an arithmetic/ logic operation by connecting an ALU (arithmetic and logic unit) to both higher and next stages of a stack and showing automatically an operation object operand at the input terminal of the ALU. CONSTITUTION: When an arithmetic operation (x+y) is carried out in a higher level language, for example, and a result (z) is obtained, (x) and then (y) are put into a stack 9. So that (x) emerges at the next stage position 12 of the stack 9 and at the input terminal A of an ALU 10 and (y) emerges at the hither stage position 11 of the stack 9 and at the input terminal B of the ALU 10 respectively. The ALU 10 is connected to the position 11, totalizes (x) and (y) under the control of an unshovm execution sequencer and outputs the result (z) from a lower part. Therefore, the result (z) is automatically set at the position 11. As the stack 9 is effectively placed in a CPU, no transfer of data is required between the stack 9 and another CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20943387A JPS6459538A (en) | 1987-08-25 | 1987-08-25 | Data processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20943387A JPS6459538A (en) | 1987-08-25 | 1987-08-25 | Data processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6459538A true JPS6459538A (en) | 1989-03-07 |
Family
ID=16572781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20943387A Pending JPS6459538A (en) | 1987-08-25 | 1987-08-25 | Data processor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6459538A (en) |
-
1987
- 1987-08-25 JP JP20943387A patent/JPS6459538A/en active Pending
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