JPS6462723A - Shifting circuit - Google Patents
Shifting circuitInfo
- Publication number
- JPS6462723A JPS6462723A JP22083887A JP22083887A JPS6462723A JP S6462723 A JPS6462723 A JP S6462723A JP 22083887 A JP22083887 A JP 22083887A JP 22083887 A JP22083887 A JP 22083887A JP S6462723 A JPS6462723 A JP S6462723A
- Authority
- JP
- Japan
- Prior art keywords
- mask
- selecting
- shift
- information
- signals
- 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 decrease the number of times of a shift and to obtain a desired data train by an operation of one step, by bringing each selecting output of a selecting means to ON/OFF control in accordance with a mask signal. CONSTITUTION:A mask information generating circuit 5 generates mask signals G0-G7 by receiving the mask length information from the right side and left side mask length registers 2, 3, and a register 4 holds information for showing the shift direction and the number of shifts. In case the mask control signals G0-G7 are '1', '0', is lead out to each output I0-I7, and each selecting circuit 6-13 executes no selecting operation. In case the mask control signal is '0', each selecting circuit executes a regular selecting operation, selects 1 bit from 8 bits in accordance with the contents of selecting signals S0-S2 from a selector 14 and outputs it. In such a way, by instructing in advance the mask information of both the right and left sides, a useless shift operation in the shift instruction is omitted, and a desired data train can be obtained by one step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22083887A JPS6462723A (en) | 1987-09-03 | 1987-09-03 | Shifting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22083887A JPS6462723A (en) | 1987-09-03 | 1987-09-03 | Shifting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6462723A true JPS6462723A (en) | 1989-03-09 |
Family
ID=16757335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22083887A Pending JPS6462723A (en) | 1987-09-03 | 1987-09-03 | Shifting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6462723A (en) |
-
1987
- 1987-09-03 JP JP22083887A patent/JPS6462723A/en active Pending
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