JPS5451737A - Input/output data transfer system - Google Patents
Input/output data transfer systemInfo
- Publication number
- JPS5451737A JPS5451737A JP11783677A JP11783677A JPS5451737A JP S5451737 A JPS5451737 A JP S5451737A JP 11783677 A JP11783677 A JP 11783677A JP 11783677 A JP11783677 A JP 11783677A JP S5451737 A JPS5451737 A JP S5451737A
- Authority
- JP
- Japan
- Prior art keywords
- data
- byte
- register
- transferred
- maximum
- 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.)
- Granted
Links
Landscapes
- Small-Scale Networks (AREA)
Abstract
PURPOSE: To reduce the frequency of the memory access as well as to increase the process non-response allowance time and to enhance the process efficiency, by processing the byte number equivalent to the memory access with the 1-byte transfer in case the data to be transferred are identical.
CONSTITUTION: The 1 byte of input/output device B and the data of data buffer register 6 which are read out of I/O are transferred to input data register 2 of channel A to be transferred to the desired 4-byte position of memory register 1 and then to be stored in memory 100 ( which can read in the data of maximum 4 bytes with one memory cycle MC). Then counter 9 counts up to "3", i.e., the maximum byte number that can be processed with 1 MC. Accordingly, register 6 features a buffer function up to maximum 4 bytes in case the same data are continuous, thus increasing the process non-response allowance time. In the case of transfer from B to A, the same data equivalent to maximum 4 bytes can be transferred to each byte position of register 1 just through transfer of the data of 1 byte
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11783677A JPS6010344B2 (en) | 1977-10-03 | 1977-10-03 | Input/output data transfer method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11783677A JPS6010344B2 (en) | 1977-10-03 | 1977-10-03 | Input/output data transfer method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5451737A true JPS5451737A (en) | 1979-04-23 |
JPS6010344B2 JPS6010344B2 (en) | 1985-03-16 |
Family
ID=14721445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11783677A Expired JPS6010344B2 (en) | 1977-10-03 | 1977-10-03 | Input/output data transfer method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6010344B2 (en) |
-
1977
- 1977-10-03 JP JP11783677A patent/JPS6010344B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6010344B2 (en) | 1985-03-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS56140451A (en) | Log information holding device | |
JPS5251828A (en) | Key input discriminating unit | |
JPS5451737A (en) | Input/output data transfer system | |
JPS55129823A (en) | Information processing system | |
JPS522330A (en) | Data processig unit | |
JPS5440049A (en) | Information process system | |
JPS5276837A (en) | Buffer register transfer control | |
JPS546433A (en) | Dma transfer circuit | |
JPS53142844A (en) | Information processor | |
JPS5277554A (en) | Cash register giving card processing function | |
JPS53112041A (en) | Data processor | |
JPS52119142A (en) | Distribution terminal system | |
JPS5294040A (en) | Data processing unit | |
JPS5344140A (en) | Electronic cash register | |
JPS52106240A (en) | Information processing unit | |
JPS51127644A (en) | Bill processing system | |
JPS529334A (en) | Status change input/output equipment | |
JPS5456733A (en) | Data transfer system | |
JPS5644942A (en) | Information processing unit | |
JPS5213742A (en) | Division operation system in a digital processing unit | |
JPS5517840A (en) | Data transfer system | |
JPS5310236A (en) | Data processing unit | |
JPS5339018A (en) | Detection control device for input spurious code | |
JPS5251830A (en) | Data processing equipment | |
JPS52123839A (en) | Signal expander |