JPS55121585A - Dot printer control system - Google Patents
Dot printer control systemInfo
- Publication number
- JPS55121585A JPS55121585A JP2843679A JP2843679A JPS55121585A JP S55121585 A JPS55121585 A JP S55121585A JP 2843679 A JP2843679 A JP 2843679A JP 2843679 A JP2843679 A JP 2843679A JP S55121585 A JPS55121585 A JP S55121585A
- Authority
- JP
- Japan
- Prior art keywords
- control part
- microprogram
- dma
- function
- 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
- Dot-Matrix Printers And Others (AREA)
Abstract
PURPOSE: To realize easily control over two-way print of a dot printer controlled by a microprogram, by providing the microprogram with a character generator and then by transferring dot pattern data to a print control part via DMA.
CONSTITUTION: Synchronizing with a timing signal, DMA (direct memory access) control part 1'-3 operates to attain access to the address of a character to be printed in character generator 1-2' stored in microprogram control patt 1' and then transfers dot pattern data to print control part 2'. Then, DMA control part 1'W3, having the increment function and decrement function to memory addresses, attains access by the increment function for forward print or the decrement function for backward print. Therefore, two-way print can easily be controlled.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2843679A JPS55121585A (en) | 1979-03-12 | 1979-03-12 | Dot printer control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2843679A JPS55121585A (en) | 1979-03-12 | 1979-03-12 | Dot printer control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55121585A true JPS55121585A (en) | 1980-09-18 |
Family
ID=12248610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2843679A Pending JPS55121585A (en) | 1979-03-12 | 1979-03-12 | Dot printer control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55121585A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4883737A (en) * | 1972-02-08 | 1973-11-08 | ||
JPS53120429A (en) * | 1977-03-29 | 1978-10-20 | Hitachi Ltd | Printing apparatus of dot type |
-
1979
- 1979-03-12 JP JP2843679A patent/JPS55121585A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4883737A (en) * | 1972-02-08 | 1973-11-08 | ||
JPS53120429A (en) * | 1977-03-29 | 1978-10-20 | Hitachi Ltd | Printing apparatus of dot type |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS52108732A (en) | Dot printer | |
JPS5534725A (en) | Printer | |
JPS55121585A (en) | Dot printer control system | |
JPS5385118A (en) | Memory control unit | |
JPS5520522A (en) | Designation system for printer character | |
JPS5311532A (en) | Printing system | |
JPS5585984A (en) | Control system for dot printer | |
GB8825125D0 (en) | Printer system with external memory for printing characters in various styles & figures | |
JPS522329A (en) | Printer control method | |
JPS55150040A (en) | Character display system | |
JPS5380919A (en) | Dot data control system | |
JPS5216929A (en) | Format print controlling method | |
JPS5384627A (en) | Reverse print control system of printer | |
JPS55147735A (en) | Serial printer | |
JPS5395529A (en) | Memory unit | |
JPS53119631A (en) | Control unit for printer | |
JPS5371532A (en) | Print control systrem | |
JPS5690383A (en) | Print control system | |
JPS5372527A (en) | Chinese chracter printing system | |
JPS54133031A (en) | Print control system in dot matrix type printer | |
JPS5324730A (en) | Control circuit f or print check | |
JPS5368934A (en) | Data print system | |
JPS52113127A (en) | Printer control unit | |
JPS55153080A (en) | Printer control circuit | |
JPS5282129A (en) | Automatic printing unit for record sheet |