JPS55123783A - Printer control system - Google Patents

Printer control system

Info

Publication number
JPS55123783A
JPS55123783A JP2997379A JP2997379A JPS55123783A JP S55123783 A JPS55123783 A JP S55123783A JP 2997379 A JP2997379 A JP 2997379A JP 2997379 A JP2997379 A JP 2997379A JP S55123783 A JPS55123783 A JP S55123783A
Authority
JP
Japan
Prior art keywords
data
read
register
bus
basis
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
JP2997379A
Other languages
Japanese (ja)
Inventor
Hideyuki Takahashi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2997379A priority Critical patent/JPS55123783A/en
Publication of JPS55123783A publication Critical patent/JPS55123783A/en
Pending legal-status Critical Current

Links

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)

Abstract

PURPOSE: To reduce a firmware step by reading the exciting phase of a pulse motor for carriage movement control by firmware.
CONSTITUTION: Excitation of a pulse motor for carriage control is given from the external through data bus 22 and is latched in register 21 by write signal 23. Data latched in register 21 becomes a pulse motor excitation driving signal by driver 25. In case of switching of this excitation, contents of register 21 are read from bus driver 27 through bus 22 by read signal 28, and a micro processor performs an arbitrary operation to update this data on a basis of the read contents above. That is, data is read on a basis of the read command of the microprocessor after data update of register 21, and updated contents are operated in the microprocessor on a basis of this read data, and in respect to the operation result, rewrite to register 21 through bus 22 is performed.
COPYRIGHT: (C)1980,JPO&Japio
JP2997379A 1979-03-16 1979-03-16 Printer control system Pending JPS55123783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2997379A JPS55123783A (en) 1979-03-16 1979-03-16 Printer control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2997379A JPS55123783A (en) 1979-03-16 1979-03-16 Printer control system

Publications (1)

Publication Number Publication Date
JPS55123783A true JPS55123783A (en) 1980-09-24

Family

ID=12290897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2997379A Pending JPS55123783A (en) 1979-03-16 1979-03-16 Printer control system

Country Status (1)

Country Link
JP (1) JPS55123783A (en)

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