JPH026342U - - Google Patents
Info
- Publication number
- JPH026342U JPH026342U JP8062188U JP8062188U JPH026342U JP H026342 U JPH026342 U JP H026342U JP 8062188 U JP8062188 U JP 8062188U JP 8062188 U JP8062188 U JP 8062188U JP H026342 U JPH026342 U JP H026342U
- Authority
- JP
- Japan
- Prior art keywords
- parity
- storage device
- data
- main
- storage
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Detection And Correction Of Errors (AREA)
- Power Sources (AREA)
Description
第１図は本考案の一実施例を説明するためのも
ので、マイクロコンピユータのブロツク図を表わ
したものである。
１１……ＣＰＵ（中央処理装置）、１２……メ
モリ回路、１６……パリテイ生成記憶回路、１７
……パラレルＩ／Ｏポート、２１……データバツ
クアツプ回路。
FIG. 1 is for explaining one embodiment of the present invention, and is a block diagram of a microcomputer. 11... CPU (Central Processing Unit), 12... Memory circuit, 16... Parity generation storage circuit, 17
...Parallel I/O port, 21...Data backup circuit.
Claims (1)
る主記憶装置と、 この主記憶装置の個々のアドレスに書き込まれ
るデータを逐次取り込んでパリテイを生成する第
１のパリテイ生成手段と、 前記主記憶装置の記憶領域と対応する記憶領域
を持ち、前記第１のパリテイ生成手段が生成した
パリテイを主記憶装置のアドレスと対応するアド
レスに記憶するパリテイ記憶手段と、 電源電圧が定格値を下回つたときに前記主記憶
装置およびパリテイ記憶手段に補助電源を供給す
るデータバツクアツプ手段と、 電源電圧が定格値に達したときに前記主記憶装
置に保持されているデータを読み出してパリテイ
を生成する第２のパリテイ生成手段と、 前記パリテイ記憶手段に保持されているパリテ
イと前記第２のパリテイ生成手段によつて生成さ
れたパリテイとを比較するパリテイ比較手段と、 このパリテイ比較手段によつて得られた情報を
基にして前記主記憶装置に保持されていたデータ
の形態が正常なものであるかを判定するデータ形
態判定手段 とを具備することを特徴とするマイクロコンピ
ユータ。[Claims for Utility Model Registration] A central processing unit, a main memory that stores data processed by the central processing unit, and a device that generates parity by sequentially capturing data written to individual addresses of the main memory. a first parity generation means; and a parity storage means having a storage area corresponding to a storage area of the main storage device, and storing the parity generated by the first parity generation means at an address corresponding to an address of the main storage device. data backup means for supplying auxiliary power to the main storage device and parity storage means when the power supply voltage falls below a rated value; a second parity generation means for reading data stored in the parity storage means and generating parity; and a parity comparison means for comparing the parity held in the parity storage means with the parity generated by the second parity generation means. and data format determining means for determining whether the format of the data held in the main storage device is normal based on the information obtained by the parity comparing means. microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8062188U JPH026342U (en) | 1988-06-20 | 1988-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8062188U JPH026342U (en) | 1988-06-20 | 1988-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH026342U true JPH026342U (en) | 1990-01-17 |
Family
ID=31305442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8062188U Pending JPH026342U (en) | 1988-06-20 | 1988-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH026342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52132333U (en) * | 1976-04-01 | 1977-10-07 |
-
1988
- 1988-06-20 JP JP8062188U patent/JPH026342U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52132333U (en) * | 1976-04-01 | 1977-10-07 | ||
| JPS5417537Y2 (en) * | 1976-04-01 | 1979-07-06 |
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