JPS5797142A - Electronic computer system - Google Patents
Electronic computer systemInfo
- Publication number
- JPS5797142A JPS5797142A JP17166180A JP17166180A JPS5797142A JP S5797142 A JPS5797142 A JP S5797142A JP 17166180 A JP17166180 A JP 17166180A JP 17166180 A JP17166180 A JP 17166180A JP S5797142 A JPS5797142 A JP S5797142A
- Authority
- JP
- Japan
- Prior art keywords
- control part
- memory
- mpu31b
- microbus
- crt
- 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
Abstract
PURPOSE: To improve a display speed, and to lighten a load of a computer, by only designating a picture to be displayed, to a microprocessor, by a CPU, so that a data can be transferred directly between a bulk memory and a CRT control part.
CONSTITUTION: A microprocessor (MPU) 31b and a microbus 31c as well as a refresh memory 31a are provided in a CRT control part 31, so that multi-access can be executed as a bulk memory control part 22x, and also so that the access can be executed from both the CPU13 and the MPU31b by connecting with a memory bus 12 in a computer 1, and the microbus 31c in the CRT control part 31. In this state, the CPU13 gives a CRT display command to the MPU31b, and in accordance with this command, the MPU31b designates an area 21a to be transferred, of a bulk memory 21, to the bulk memory control part 22x. A data of this area is written directly in the refresh memory 31a through the microbus 31c, and is displayed on a monitor part 32.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17166180A JPS5797142A (en) | 1980-12-05 | 1980-12-05 | Electronic computer system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17166180A JPS5797142A (en) | 1980-12-05 | 1980-12-05 | Electronic computer system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5797142A true JPS5797142A (en) | 1982-06-16 |
Family
ID=15927346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17166180A Pending JPS5797142A (en) | 1980-12-05 | 1980-12-05 | Electronic computer system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5797142A (en) |
-
1980
- 1980-12-05 JP JP17166180A patent/JPS5797142A/en active Pending
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