JPS6461787A - Crt controller - Google Patents
Crt controllerInfo
- Publication number
- JPS6461787A JPS6461787A JP62218180A JP21818087A JPS6461787A JP S6461787 A JPS6461787 A JP S6461787A JP 62218180 A JP62218180 A JP 62218180A JP 21818087 A JP21818087 A JP 21818087A JP S6461787 A JPS6461787 A JP S6461787A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- display
- register file
- control
- register
- 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
Landscapes
- Controls And Circuits For Display Device (AREA)
Abstract
PURPOSE: To speed up screen switching by storing respective parameters determining the raster number, total horizontal character number, total vertical character number, and generation timing of a control signal in a register file and controlling the transfer timing of the parameters. CONSTITUTION: To switch a screen display, a CPU 11 writes data to be transferred to respective registers 13-16 in the register file 17. Under the control of a control part 18, a transfer control part 20 transfers the respective data stored in the register file 17 from a raster address register to a control register 16. A controller main body 12 reads out character codes corresponding to screen positions and displays a character font on the screen. The main body 12 makes the display in order from a 1st line by following the said procedure, so the screen can easily be switched to improve the flexibility of the display and speed up the display operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62218180A JPS6461787A (en) | 1987-09-01 | 1987-09-01 | Crt controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62218180A JPS6461787A (en) | 1987-09-01 | 1987-09-01 | Crt controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6461787A true JPS6461787A (en) | 1989-03-08 |
Family
ID=16715866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62218180A Pending JPS6461787A (en) | 1987-09-01 | 1987-09-01 | Crt controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6461787A (en) |
-
1987
- 1987-09-01 JP JP62218180A patent/JPS6461787A/en active Pending
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