JPS5469923A - Memory shared device - Google Patents
Memory shared deviceInfo
- Publication number
- JPS5469923A JPS5469923A JP13693177A JP13693177A JPS5469923A JP S5469923 A JPS5469923 A JP S5469923A JP 13693177 A JP13693177 A JP 13693177A JP 13693177 A JP13693177 A JP 13693177A JP S5469923 A JPS5469923 A JP S5469923A
- Authority
- JP
- Japan
- Prior art keywords
- flag register
- address
- memory controller
- signal
- processor
- 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 reduce the contention of access requests among a plural number of processor only by providing a simple flag register.
CONSTITUTION: When processor 1 sends out an access request and an address to be accessed to memory controller 4 at the same time, memory controller 4 detects what memory module among M1 to Mn the address belongs to, and checks the contents of flag register 10 which corresponds to the address. If not flag register 10 is set, that means no access from any other processor, so that the signal will be sent back as an accessible signal to memory controller 4 via bus 11 at the same time when the flag register is set. By the signal from flag register 10, memory controller 4 sends out a control timing pulse, address signal, write data, etc., to the memory module via bus 5.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13693177A JPS5469923A (en) | 1977-11-15 | 1977-11-15 | Memory shared device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13693177A JPS5469923A (en) | 1977-11-15 | 1977-11-15 | Memory shared device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5469923A true JPS5469923A (en) | 1979-06-05 |
Family
ID=15186895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13693177A Pending JPS5469923A (en) | 1977-11-15 | 1977-11-15 | Memory shared device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5469923A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0683700A (en) * | 1991-12-30 | 1994-03-25 | Gold Star Co Ltd | Apparatus and method for controlling memory access of multiprocessor system |
-
1977
- 1977-11-15 JP JP13693177A patent/JPS5469923A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0683700A (en) * | 1991-12-30 | 1994-03-25 | Gold Star Co Ltd | Apparatus and method for controlling memory access of multiprocessor system |
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