JPS5588139A - Program write system - Google Patents
Program write systemInfo
- Publication number
- JPS5588139A JPS5588139A JP16002778A JP16002778A JPS5588139A JP S5588139 A JPS5588139 A JP S5588139A JP 16002778 A JP16002778 A JP 16002778A JP 16002778 A JP16002778 A JP 16002778A JP S5588139 A JPS5588139 A JP S5588139A
- Authority
- JP
- Japan
- Prior art keywords
- effective
- written
- instructions
- judged
- program
- 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.)
- Granted
Links
Landscapes
- Read Only Memory (AREA)
Abstract
PURPOSE: To perform write operation with PROM connected to a unit by writing effective instructions in case that when a ROM unit is selected and its program is judged to be effective, any other instruction is not written at an assigned address.
CONSTITUTION: On the basis of a decision signal, program loader 15 discriminates whether a memory selected from memory 14 is RAM or PROM, and when the ROM unit is selected, its program is judged to be effective or not. When it is judged to be effective instructions, a previously-fixed logic state, e.g. "0" is written at an assigned address and write operation of following effective instructions is inhibited; and when effective insturction, it is judged whether any other instruction is written at the assigned address and if not, effective instructions are written. Consequently, instructions can be written by RAM program loader 15 with PROM connected to a processor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53160027A JPS6053330B2 (en) | 1978-12-27 | 1978-12-27 | Program writing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53160027A JPS6053330B2 (en) | 1978-12-27 | 1978-12-27 | Program writing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5588139A true JPS5588139A (en) | 1980-07-03 |
JPS6053330B2 JPS6053330B2 (en) | 1985-11-25 |
Family
ID=15706369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53160027A Expired JPS6053330B2 (en) | 1978-12-27 | 1978-12-27 | Program writing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6053330B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59189445A (en) * | 1983-04-12 | 1984-10-27 | Mitsubishi Electric Corp | Numerical controller |
JPS60149244A (en) * | 1984-01-13 | 1985-08-06 | Matsushita Electric Works Ltd | Program setting system for multiplex transmission system |
-
1978
- 1978-12-27 JP JP53160027A patent/JPS6053330B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59189445A (en) * | 1983-04-12 | 1984-10-27 | Mitsubishi Electric Corp | Numerical controller |
JPS60149244A (en) * | 1984-01-13 | 1985-08-06 | Matsushita Electric Works Ltd | Program setting system for multiplex transmission system |
JPH0544859B2 (en) * | 1984-01-13 | 1993-07-07 | Matsushita Electric Works Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6053330B2 (en) | 1985-11-25 |
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