JPS57174753A - Information processor - Google Patents
Information processorInfo
- Publication number
- JPS57174753A JPS57174753A JP6089181A JP6089181A JPS57174753A JP S57174753 A JPS57174753 A JP S57174753A JP 6089181 A JP6089181 A JP 6089181A JP 6089181 A JP6089181 A JP 6089181A JP S57174753 A JPS57174753 A JP S57174753A
- Authority
- JP
- Japan
- Prior art keywords
- data
- address
- access
- memory
- signal
- 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 realize the transfer of data at a high speed with the overlapping of both cycles of the memory and the data, by leaving an address to an external address holding circuit while a processor itself is giving an access to a memory device and delivering successively the addresses to which an access will be given in the future to select the memory.
CONSTITUTION: An address is supplied to an address holding circuit 204 by the bus group selection signal and an output signal 228. Thus the address is delivered to an address line 213 to reach a memory device 202. An access is given to a selected memory address, and the data is delivered to a data line 214. The data is then fed to a data bus 212 of the processor side through a data buffer 205 to be fetched into a microprocessor 201. The data is read out of a memory device 203 by an access signal 227 to the device 203 and a signal 225 indicating the direction of data during the time T7WT9. Then the data is transferred to the microprocessor 201 through a data line 216, a data buffer 207 and the bus 212 respectively.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6089181A JPS57174753A (en) | 1981-04-22 | 1981-04-22 | Information processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6089181A JPS57174753A (en) | 1981-04-22 | 1981-04-22 | Information processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57174753A true JPS57174753A (en) | 1982-10-27 |
Family
ID=13155428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6089181A Pending JPS57174753A (en) | 1981-04-22 | 1981-04-22 | Information processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57174753A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62154018A (en) * | 1985-12-26 | 1987-07-09 | Fujitsu Ltd | Semiconductor disk device |
-
1981
- 1981-04-22 JP JP6089181A patent/JPS57174753A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62154018A (en) * | 1985-12-26 | 1987-07-09 | Fujitsu Ltd | Semiconductor disk device |
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