JPH0462599U

JPH0462599U -

Info

Publication number: JPH0462599U
Application number: JP10452690U
Authority: JP
Priority date: 1990-10-05
Filing date: 1990-10-05
Publication date: 1992-05-28

Description

[Brief explanation of the drawing]

第１図は本考案の構成を示す機能ブロツク図。
第２図は本考案の一実施例の構成を示すブロツク
図。２０……Ｅ^２ＰＲＯＭ、２１……判別手段、２
２……データ格納領域決定手段、２３……制御手
段。 FIG. 1 is a functional block diagram showing the configuration of the present invention.
FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. 20... ^E2 PROM, 21...Discrimination means, 2
2... Data storage area determining means, 23... Control means.

Claims

[Scope of utility model registration request]

The data storage area of the ^E2 PROM is divided into a plurality of areas, and an identifier area in which a flag is stored and is not reset corresponding to each divided data storage area is set as E.
² Discrimination means provided in the PROM for determining an identifier area in which the state of a flag stored in a standard identifier area and the state of a flag stored in another identifier area do not match, and a means for determining an identifier area that is determined to be a mismatch. The data storage area corresponding to the identifier area is used as the next data storage area for storing data, and if there is no identifier area that is determined to be a mismatch, the data storage area corresponding to the reference identifier area is used as the next data storage area. a data storage area determining means for determining a data storage area to be used as a data storage area for storing the next data, and storing the data to be input following the write request in the data storage area determined as the data storage area for storing the next data, and terminating the storage. 1. An E ² PROM control system comprising: a control means for inverting a flag stored in an identifier area corresponding to a data storage area in which data has been stored immediately before.