JPS5694448A - Information processing device - Google Patents
Information processing deviceInfo
- Publication number
- JPS5694448A JPS5694448A JP17069279A JP17069279A JPS5694448A JP S5694448 A JPS5694448 A JP S5694448A JP 17069279 A JP17069279 A JP 17069279A JP 17069279 A JP17069279 A JP 17069279A JP S5694448 A JPS5694448 A JP S5694448A
- Authority
- JP
- Japan
- Prior art keywords
- shift
- data
- registers
- terminal
- multiplexers
- 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
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE: To prevent the time loss of register data in the test to shorten the operation time, by connecting the two-way shift bus, which can be operated by the select signal of the direction indication signal circuit, to plural registers where data can be read and written.
CONSTITUTION: Plural registers 21.1W21.i are provided which are cascaded shiftably and read and write data in response to shift indication, and multiplexers 24.1W 24.(i+1) are connected between inputs and outputs of these registers 21.1W21.i, thereby constituting two two-way shift busses to which data from the preceding stage as well as the succeeding stage can be input. Control terminal 13 is connected to multiplexers 24.1W24.(i+1) to supply the shift direction indicating signal, and the input terminal and output terminal 23 are connected to multiplexer 24.1 and multiplexer 24.(i+1) respectively. Then, the shift bus is selected by the shift direction indicating signal from terminal 13, and the time loss of register data in the test for registers 21.1W21.i is prevented to shorten the operation time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17069279A JPS5694448A (en) | 1979-12-27 | 1979-12-27 | Information processing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17069279A JPS5694448A (en) | 1979-12-27 | 1979-12-27 | Information processing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5694448A true JPS5694448A (en) | 1981-07-30 |
Family
ID=15909620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17069279A Pending JPS5694448A (en) | 1979-12-27 | 1979-12-27 | Information processing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5694448A (en) |
-
1979
- 1979-12-27 JP JP17069279A patent/JPS5694448A/en active Pending
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