JPS57207970A - Microcomputer - Google Patents

Microcomputer

Info

Publication number
JPS57207970A
JPS57207970A JP56092826A JP9282681A JPS57207970A JP S57207970 A JPS57207970 A JP S57207970A JP 56092826 A JP56092826 A JP 56092826A JP 9282681 A JP9282681 A JP 9282681A JP S57207970 A JPS57207970 A JP S57207970A
Authority
JP
Japan
Prior art keywords
ram12
address
rank
ram3
cpu1
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
Application number
JP56092826A
Other languages
Japanese (ja)
Inventor
Joji Fukuda
Yoshihiko Matsumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP56092826A priority Critical patent/JPS57207970A/en
Priority to AU84772/82A priority patent/AU561809B2/en
Priority to CA000405102A priority patent/CA1181528A/en
Priority to GB08217266A priority patent/GB2103398B/en
Priority to AT233082A priority patent/AT388620B/en
Priority to FR8210537A priority patent/FR2507799A1/en
Priority to NL8202448A priority patent/NL8202448A/en
Priority to DE19823222704 priority patent/DE3222704A1/en
Publication of JPS57207970A publication Critical patent/JPS57207970A/en
Priority to AT87783A priority patent/AT377441B/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/76—Architectures of general purpose stored program computers
    • G06F15/78—Architectures of general purpose stored program computers comprising a single central processing unit
    • G06F15/7839—Architectures of general purpose stored program computers comprising a single central processing unit with memory
    • G06F15/7864—Architectures of general purpose stored program computers comprising a single central processing unit with memory on more than one IC chip

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microcomputers (AREA)
  • Digital Computer Display Output (AREA)
  • Debugging And Monitoring (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

PURPOSE: To make a user possible use of a large program, by allotting an RAM to the memory address of the CPU and a video RAM to the I/O address of the CPU by turning over the higher rank and lower rank.
CONSTITUTION: In an RAM3, a user's program is written and the work area of a CPU1 is formed, and a 32KB is assigned to the RAM3 as in the case of RAM12. The higher rank and lower rank of the address of the RAM3 are connected to the higher rank bit and lower rank bit of the memory address of the CPU1, respectively. Moreover, the video RAM12 is inversely connected so that the higher rank and lower rank bits of the address of the RAM12 may become the lower rank and higher rank bits of the I/O address of the CPU1, respectively. When this configuration is applied, addresses are set against an ROM2, the RAM3, and the RAM12 as shown in Fig. a. Moreover, it is arranged that the user's program will not become narrower than the RAM12.
COPYRIGHT: (C)1982,JPO&Japio
JP56092826A 1981-06-16 1981-06-16 Microcomputer Pending JPS57207970A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP56092826A JPS57207970A (en) 1981-06-16 1981-06-16 Microcomputer
AU84772/82A AU561809B2 (en) 1981-06-16 1982-06-10 Desk top microcomputer
CA000405102A CA1181528A (en) 1981-06-16 1982-06-14 Micro computer adapted for use with crt display
GB08217266A GB2103398B (en) 1981-06-16 1982-06-15 Microcomputer apparatus for use with a video display
AT233082A AT388620B (en) 1981-06-16 1982-06-16 MICROCOMPUTER DEVICE
FR8210537A FR2507799A1 (en) 1981-06-16 1982-06-16 MICROCOMPUTER
NL8202448A NL8202448A (en) 1981-06-16 1982-06-16 MICRO COMPUTER.
DE19823222704 DE3222704A1 (en) 1981-06-16 1982-06-16 MICROCOMPUTER CIRCUIT ARRANGEMENT
AT87783A AT377441B (en) 1981-06-16 1983-03-11 DEVICE FOR PREVENTING THE SLIDING OF FREE SKIS IN DEEP SNOW

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56092826A JPS57207970A (en) 1981-06-16 1981-06-16 Microcomputer

Publications (1)

Publication Number Publication Date
JPS57207970A true JPS57207970A (en) 1982-12-20

Family

ID=14065231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56092826A Pending JPS57207970A (en) 1981-06-16 1981-06-16 Microcomputer

Country Status (8)

Country Link
JP (1) JPS57207970A (en)
AT (1) AT388620B (en)
AU (1) AU561809B2 (en)
CA (1) CA1181528A (en)
DE (1) DE3222704A1 (en)
FR (1) FR2507799A1 (en)
GB (1) GB2103398B (en)
NL (1) NL8202448A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308612A1 (en) * 1983-03-11 1984-09-13 hob Horst Brandstätter, 8502 Zirndorf Screen arrangement for computer or memory systems
GB2137382B (en) * 1983-08-20 1985-12-04 Christopher John Favero Jordan Computer memories

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973244A (en) * 1975-02-27 1976-08-03 Zentec Corporation Microcomputer terminal system
US4026555A (en) * 1975-03-12 1977-05-31 Alpex Computer Corporation Television display control apparatus
DE2922540C2 (en) * 1978-06-02 1985-10-24 Hitachi, Ltd., Tokio/Tokyo Data processing system
JPS6036592B2 (en) * 1979-06-13 1985-08-21 株式会社日立製作所 Character graphic display device
JPS57101887A (en) * 1980-12-16 1982-06-24 Sony Corp Character display
JPS57101888A (en) * 1980-12-16 1982-06-24 Sony Corp Character display

Also Published As

Publication number Publication date
AU8477282A (en) 1982-12-23
FR2507799A1 (en) 1982-12-17
GB2103398B (en) 1985-07-17
ATA233082A (en) 1988-12-15
AU561809B2 (en) 1987-05-21
GB2103398A (en) 1983-02-16
AT388620B (en) 1989-08-10
NL8202448A (en) 1983-01-17
DE3222704A1 (en) 1982-12-30
FR2507799B1 (en) 1985-01-04
CA1181528A (en) 1985-01-22

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