JPS5547524A - Data transmission device - Google Patents
Data transmission deviceInfo
- Publication number
- JPS5547524A JPS5547524A JP11857178A JP11857178A JPS5547524A JP S5547524 A JPS5547524 A JP S5547524A JP 11857178 A JP11857178 A JP 11857178A JP 11857178 A JP11857178 A JP 11857178A JP S5547524 A JPS5547524 A JP S5547524A
- Authority
- JP
- Japan
- Prior art keywords
- command word
- circuit
- accommodating position
- main memory
- command
- 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
Landscapes
- Advance Control (AREA)
Abstract
PURPOSE: To look ahead the command word without limit for the soft by judging if there is a possibility that the command word is changed by the already read data transmission command when the command word is read from the main memory device in advance of the performance of the command.
CONSTITUTION: The look ahead command word memory circuit 14 reads the command word prefetched by the command word prefetch control circuit 13 in the command word prefetch control portion 12 from the main memory circuit 11 and accommodated. The data accommodating position memory circuit 15 memorizes the data accommodating position in the main memory device of the data transmission corresponding to the case where the read command word indicates the data accommodating position to the main memory device. The prefetch command word accommodating position in the main memory device 11 of the command word about to be prefetched in the next place is read by the prefetch command word position memory circuit 16 and the comparison circuit 17 compares the command word accommodating position memorized in the circuit 16 with the data accommodating position memorized in the circuit 15.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11857178A JPS5547524A (en) | 1978-09-28 | 1978-09-28 | Data transmission device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11857178A JPS5547524A (en) | 1978-09-28 | 1978-09-28 | Data transmission device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5547524A true JPS5547524A (en) | 1980-04-04 |
Family
ID=14739886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11857178A Pending JPS5547524A (en) | 1978-09-28 | 1978-09-28 | Data transmission device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5547524A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57193842A (en) * | 1981-05-22 | 1982-11-29 | Hitachi Ltd | Request conflict detecting system |
JPS5892041A (en) * | 1981-11-27 | 1983-06-01 | Hitachi Ltd | Data processor |
JPS6180334A (en) * | 1984-09-26 | 1986-04-23 | Nec Corp | Electronic computer |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5112225A (en) * | 1974-07-12 | 1976-01-30 | Signode Corp | |
JPS522139A (en) * | 1975-06-24 | 1977-01-08 | Hitachi Ltd | Information processing apparatus |
-
1978
- 1978-09-28 JP JP11857178A patent/JPS5547524A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5112225A (en) * | 1974-07-12 | 1976-01-30 | Signode Corp | |
JPS522139A (en) * | 1975-06-24 | 1977-01-08 | Hitachi Ltd | Information processing apparatus |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57193842A (en) * | 1981-05-22 | 1982-11-29 | Hitachi Ltd | Request conflict detecting system |
JPS5892041A (en) * | 1981-11-27 | 1983-06-01 | Hitachi Ltd | Data processor |
JPS6132698B2 (en) * | 1981-11-27 | 1986-07-29 | Hitachi Ltd | |
JPS6180334A (en) * | 1984-09-26 | 1986-04-23 | Nec Corp | Electronic computer |
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