JPS5538674A - Logout system of memory controller - Google Patents
Logout system of memory controllerInfo
- Publication number
- JPS5538674A JPS5538674A JP11170778A JP11170778A JPS5538674A JP S5538674 A JPS5538674 A JP S5538674A JP 11170778 A JP11170778 A JP 11170778A JP 11170778 A JP11170778 A JP 11170778A JP S5538674 A JPS5538674 A JP S5538674A
- Authority
- JP
- Japan
- Prior art keywords
- fault
- acception
- memory controller
- circuit
- access
- 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 enable a memory controller in a system operation state to collect data when a temporarily fault occurs by controlling the freeze release of the access acception of the memory controller, the logout of the internal state at fault time and storage to an external memory through a fault processor.
CONSTITUTION: When fault generating circuit 21 of memory controller 1 detects a fault such as address and parity errors, FF22 is set to close AND gates 16 and 17 through OR circuit 20, thereby freezing the access acception of address acception circuit 18 while the set output of fault detection FF22 is supplied to the fault processor. Consequently, the fault processor reads out the states of acception detection FF19 of circuit 1 and a register and stores them in an external memory. Then, the fault processor resets FF22 to release the acception freeze of access of circuit 1. Those operations are carried out automatically and when a temporarily fault occurs, status data at the time of the fault of the memory controller can be collected while the operation of a system including CPU is carried on.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11170778A JPS5538674A (en) | 1978-09-13 | 1978-09-13 | Logout system of memory controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11170778A JPS5538674A (en) | 1978-09-13 | 1978-09-13 | Logout system of memory controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5538674A true JPS5538674A (en) | 1980-03-18 |
Family
ID=14568106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11170778A Pending JPS5538674A (en) | 1978-09-13 | 1978-09-13 | Logout system of memory controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5538674A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57183700A (en) * | 1981-05-08 | 1982-11-12 | Nec Corp | Information processor |
JPS5955558A (en) * | 1982-09-22 | 1984-03-30 | Fujitsu Ltd | Cache memory control system |
JPS60118957A (en) * | 1983-11-30 | 1985-06-26 | Fujitsu Ltd | Faulty main storage device address control system in data processing system |
-
1978
- 1978-09-13 JP JP11170778A patent/JPS5538674A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57183700A (en) * | 1981-05-08 | 1982-11-12 | Nec Corp | Information processor |
JPS5955558A (en) * | 1982-09-22 | 1984-03-30 | Fujitsu Ltd | Cache memory control system |
JPH0122933B2 (en) * | 1982-09-22 | 1989-04-28 | Fujitsu Ltd | |
JPS60118957A (en) * | 1983-11-30 | 1985-06-26 | Fujitsu Ltd | Faulty main storage device address control system in data processing system |
JPH0430622B2 (en) * | 1983-11-30 | 1992-05-22 |
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