JPS6464049A - Degeneration controller for buffer device - Google Patents
Degeneration controller for buffer deviceInfo
- Publication number
- JPS6464049A JPS6464049A JP62221333A JP22133387A JPS6464049A JP S6464049 A JPS6464049 A JP S6464049A JP 62221333 A JP62221333 A JP 62221333A JP 22133387 A JP22133387 A JP 22133387A JP S6464049 A JPS6464049 A JP S6464049A
- Authority
- JP
- Japan
- Prior art keywords
- error
- circuit
- degeneration
- control information
- valid
- 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 surely report the occurrence of degeneration despite such a fault with which it is regarded that the degeneration control information is always kept set, by reporting the occurrence of an error regardless of the state of a DG bit in case the degeneration control information is not set. CONSTITUTION:When an error is detected out of the entry data read out of a buffer device 1 is detected by an error detecting circuit 4, the output of a 1st AND circuit 5 is valid as long as the degeneration control information (DG bit) 3 which is read out simultaneously with detection of said error is not set. Thus the error is reported via an error reporting signal line 9. While a 2nd AND circuit 7 is valid when a degeneration control information register 6 is not set at detection of the error. Thus the error is reported via an OR circuit 8 and the line 9. At the same time, the register 6 is set and the output of the circuit 7 is never valid to the subsequent errors.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221333A JPS6464049A (en) | 1987-09-04 | 1987-09-04 | Degeneration controller for buffer device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221333A JPS6464049A (en) | 1987-09-04 | 1987-09-04 | Degeneration controller for buffer device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6464049A true JPS6464049A (en) | 1989-03-09 |
Family
ID=16765162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62221333A Pending JPS6464049A (en) | 1987-09-04 | 1987-09-04 | Degeneration controller for buffer device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6464049A (en) |
-
1987
- 1987-09-04 JP JP62221333A patent/JPS6464049A/en active Pending
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