JPS5663628A - Data processing device - Google Patents
Data processing deviceInfo
- Publication number
- JPS5663628A JPS5663628A JP13856679A JP13856679A JPS5663628A JP S5663628 A JPS5663628 A JP S5663628A JP 13856679 A JP13856679 A JP 13856679A JP 13856679 A JP13856679 A JP 13856679A JP S5663628 A JPS5663628 A JP S5663628A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- machine cycle
- clock
- period
- control
- 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
- Executing Machine-Instructions (AREA)
- Microcomputers (AREA)
- Information Transfer Systems (AREA)
Abstract
PURPOSE: To make it possible to easily control every I/O and a data transfer to the memory, by providing the memory part which is able to set the length information of the processing period, and changing the period of the internal clock in accordance with value of the memory part.
CONSTITUTION: An optional machine cycle period is written in advance in the register 6 by the program control, the machine cycle selective circuit 5 is made to a selectable state by the selection approval signal ENB18, and an output from the register 6 which has been set is selected, and it is input to the frequency dividing control circuit 4. The circuit 4 controls the frequency dividing circuit 3 in accordance with the selected machine cycle period, and one of the signals which have divided frequency of the external clock into 1/2, 1/4 and 1/8 is provided to the clock generating circuit 1. The circuit 1 generates the clock 19 divided by the circuit 3 as the internal clock 15, and also the dividing clock generates the control signals ϕ1, ϕ2 of the machine cycle generating circuit 2. Accordingly, the machine cycle can be freely changed by the program control, and the output period of the input/ output control signal can be adjusted freely.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13856679A JPS5663628A (en) | 1979-10-25 | 1979-10-25 | Data processing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13856679A JPS5663628A (en) | 1979-10-25 | 1979-10-25 | Data processing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5663628A true JPS5663628A (en) | 1981-05-30 |
JPS6339939B2 JPS6339939B2 (en) | 1988-08-09 |
Family
ID=15225128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13856679A Granted JPS5663628A (en) | 1979-10-25 | 1979-10-25 | Data processing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5663628A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58136521A (en) * | 1982-02-05 | 1983-08-13 | Kubota Ltd | Steering and traveling device of front wheel driven tractor |
JPS6290742A (en) * | 1985-10-09 | 1987-04-25 | サン・マイクロシステムズ・インコ−ポレ−テツド | Method and apparatus for upgrading performance of cpu |
JPS62221719A (en) * | 1986-03-20 | 1987-09-29 | Fujitsu Ltd | Clock control system |
JPS6329845A (en) * | 1986-07-23 | 1988-02-08 | Hitachi Ltd | Data processing system |
JPH03286213A (en) * | 1990-03-30 | 1991-12-17 | Matsushita Electric Ind Co Ltd | Data processor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5245844A (en) * | 1975-10-08 | 1977-04-11 | Hitachi Ltd | Microprogram input/output control unit |
JPS5255449A (en) * | 1975-10-31 | 1977-05-06 | Toshiba Corp | Microprocessor |
JPS54527A (en) * | 1977-06-03 | 1979-01-05 | Hitachi Ltd | Control circuit for terminal unit |
JPS5464941A (en) * | 1977-11-01 | 1979-05-25 | Fuji Electric Co Ltd | Weight generator circuit |
-
1979
- 1979-10-25 JP JP13856679A patent/JPS5663628A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5245844A (en) * | 1975-10-08 | 1977-04-11 | Hitachi Ltd | Microprogram input/output control unit |
JPS5255449A (en) * | 1975-10-31 | 1977-05-06 | Toshiba Corp | Microprocessor |
JPS54527A (en) * | 1977-06-03 | 1979-01-05 | Hitachi Ltd | Control circuit for terminal unit |
JPS5464941A (en) * | 1977-11-01 | 1979-05-25 | Fuji Electric Co Ltd | Weight generator circuit |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58136521A (en) * | 1982-02-05 | 1983-08-13 | Kubota Ltd | Steering and traveling device of front wheel driven tractor |
JPS6235929B2 (en) * | 1982-02-05 | 1987-08-04 | Kubota Ltd | |
JPS6290742A (en) * | 1985-10-09 | 1987-04-25 | サン・マイクロシステムズ・インコ−ポレ−テツド | Method and apparatus for upgrading performance of cpu |
JPS62221719A (en) * | 1986-03-20 | 1987-09-29 | Fujitsu Ltd | Clock control system |
JPH0467643B2 (en) * | 1986-03-20 | 1992-10-29 | Fujitsu Ltd | |
JPS6329845A (en) * | 1986-07-23 | 1988-02-08 | Hitachi Ltd | Data processing system |
JPH03286213A (en) * | 1990-03-30 | 1991-12-17 | Matsushita Electric Ind Co Ltd | Data processor |
Also Published As
Publication number | Publication date |
---|---|
JPS6339939B2 (en) | 1988-08-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5663628A (en) | Data processing device | |
JPS57123455A (en) | Instruction executing device | |
JPS5454531A (en) | Crt display unti | |
JPS51118341A (en) | Shift register type memory | |
JPS551556A (en) | Multifunctional electronic watch | |
JPS54109872A (en) | Pla system of electronic type multifunction watch | |
JPS5338373A (en) | Ic for watch | |
JPS5447438A (en) | Control system for scratch memory | |
JPS522330A (en) | Data processig unit | |
JPS5286746A (en) | Pulse count readout control circuit | |
JPS5445550A (en) | Digital protection control unit | |
JPS5538668A (en) | Memory unit | |
JPS5538604A (en) | Memory device | |
JPS5663625A (en) | Timer circuit | |
JPS5467179A (en) | Control system | |
JPS5654549A (en) | Data processor | |
JPS5629755A (en) | Testing device for logic circuit | |
JPS57193847A (en) | Memory bank dividing circuit | |
JPS54122944A (en) | Logic circuit | |
JPS5457918A (en) | Memory access processing system | |
JPS54126006A (en) | Information service device | |
JPS5640952A (en) | Microprogram control system | |
JPS5483343A (en) | Clock control system | |
JPS5576434A (en) | Cursor control unit | |
JPS52120629A (en) | Brown tube display control unit |