GB1521737A - Data processing - Google Patents
Data processingInfo
- Publication number
- GB1521737A GB1521737A GB3561875A GB3561875A GB1521737A GB 1521737 A GB1521737 A GB 1521737A GB 3561875 A GB3561875 A GB 3561875A GB 3561875 A GB3561875 A GB 3561875A GB 1521737 A GB1521737 A GB 1521737A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- register
- memory
- unit
- instructions
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
- G06F13/122—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware performs an I/O function other than control of data transfer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/22—Microcontrol or microprogram arrangements
- G06F9/223—Execution means for microinstructions irrespective of the microinstruction function, e.g. decoding of microinstructions and nanoinstructions; timing of microinstructions; programmable logic arrays; delays and fan-out problems
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Software Systems (AREA)
- Multi Processors (AREA)
- Debugging And Monitoring (AREA)
- Executing Machine-Instructions (AREA)
Abstract
1521737 Data processing FUJITSU Ltd 28 Aug 1975 [29 Aug 1974] 35618/75 Heading G4A The processing section of a central processing unit 1 (Fig. 1) operates on instructions from either its own control memory 15 or from an auxiliary processing unit 6. As described either control memory 15 may be accessed under the control of address register 16 to cause read out to register 17 of a microinstruction to be executed by control circuit 18 connected to processing section 19, data channel 3 and main memory 2, or a signal from coupling device 14 of the auxiliary unit 6 to control unit 18 results in gate 21 being enabled to permit instructions from memory 8, light pen 10, keyboard 11 or input/output unit 13 to be entered into the register 17. At each access of control memory 15, four instructions are read out, one of these being selected in accordance with the contents of two bits of the address register 16. The register 17 has upper and lower halves each storing a microinstruction and operated alternatively. The arrangement obviates the necessity of storing in control memory 15 microprograms not in frequent use, e.g. those controlling the display of the auxiliary unit 6.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9914774A JPS5126433A (en) | 1974-08-29 | 1974-08-29 | JOHOSHORISHISUTEMUSEIGYOHOSHIKI |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1521737A true GB1521737A (en) | 1978-08-16 |
Family
ID=14239568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3561875A Expired GB1521737A (en) | 1974-08-29 | 1975-08-28 | Data processing |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5126433A (en) |
DE (1) | DE2536251A1 (en) |
FR (1) | FR2283487A1 (en) |
GB (1) | GB1521737A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56120639A (en) * | 1980-02-27 | 1981-09-22 | Nippon Shinyaku Co Ltd | Biphenyl derivative |
JPS56123940A (en) * | 1980-03-06 | 1981-09-29 | Nippon Shinyaku Co Ltd | Biphenyl derivative and its preparation |
JPS57209540A (en) * | 1981-06-19 | 1982-12-22 | Oki Electric Ind Co Ltd | Console device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3380033A (en) * | 1963-07-17 | 1968-04-23 | Vyzk Ustav Matemat Stroju | Computer apparatus |
US3585599A (en) * | 1968-07-09 | 1971-06-15 | Ibm | Universal system service adapter |
BE757967A (en) * | 1969-10-25 | 1971-04-23 | Philips Nv | MEMORY FOR MICROPROGRAMME |
US3839705A (en) * | 1972-12-14 | 1974-10-01 | Gen Electric | Data processor including microprogram control means |
US3859636A (en) * | 1973-03-22 | 1975-01-07 | Bell Telephone Labor Inc | Microprogram controlled data processor for executing microprogram instructions from microprogram memory or main memory |
-
1974
- 1974-08-29 JP JP9914774A patent/JPS5126433A/en active Granted
-
1975
- 1975-08-14 DE DE19752536251 patent/DE2536251A1/en active Pending
- 1975-08-28 FR FR7526497A patent/FR2283487A1/en active Granted
- 1975-08-28 GB GB3561875A patent/GB1521737A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5126433A (en) | 1976-03-04 |
DE2536251A1 (en) | 1976-03-18 |
FR2283487B1 (en) | 1979-02-02 |
FR2283487A1 (en) | 1976-03-26 |
JPS5241165B2 (en) | 1977-10-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930828 |