JPS5641600A - Detection system for memory capacity - Google Patents
Detection system for memory capacityInfo
- Publication number
- JPS5641600A JPS5641600A JP11766879A JP11766879A JPS5641600A JP S5641600 A JPS5641600 A JP S5641600A JP 11766879 A JP11766879 A JP 11766879A JP 11766879 A JP11766879 A JP 11766879A JP S5641600 A JPS5641600 A JP S5641600A
- Authority
- JP
- Japan
- Prior art keywords
- register
- memory
- block
- memory capacity
- detection system
- 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
- Techniques For Improving Reliability Of Storages (AREA)
- Debugging And Monitoring (AREA)
Abstract
PURPOSE: To facilitate a read of the memory capacity of hardware at a firmware side by combining a free gate in a memory block with a register.
CONSTITUTION: Memory block 101 consists of memory 11 and memory control circuit 12, which is connected to MPU bus 14 via register 13 together with control circuits of the same constitution of blocks 102W10n. Then, register 13 shows a constant logical level when a block is connected and makes it possible to record its inverted level when not. Thus, the contents of register 13 are read out at the firmware side, so that the block can immediately be judged. In this case, logic gates 211W213 in circuit 12 are used for data control and free gate 214 is coupled with register 13.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11766879A JPS5641600A (en) | 1979-09-13 | 1979-09-13 | Detection system for memory capacity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11766879A JPS5641600A (en) | 1979-09-13 | 1979-09-13 | Detection system for memory capacity |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5641600A true JPS5641600A (en) | 1981-04-18 |
Family
ID=14717318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11766879A Pending JPS5641600A (en) | 1979-09-13 | 1979-09-13 | Detection system for memory capacity |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5641600A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58111168A (en) * | 1981-12-25 | 1983-07-02 | Canon Inc | Information transmitting device |
JPS58501972A (en) * | 1981-11-17 | 1983-11-17 | ヒュンダイ・エレクトロニクス・インダストリーズ・カンパニー・リミテッド | memory mapping unit |
JPH0262646A (en) * | 1988-08-30 | 1990-03-02 | Nec Corp | Multi-firmware device |
-
1979
- 1979-09-13 JP JP11766879A patent/JPS5641600A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58501972A (en) * | 1981-11-17 | 1983-11-17 | ヒュンダイ・エレクトロニクス・インダストリーズ・カンパニー・リミテッド | memory mapping unit |
JPS58111168A (en) * | 1981-12-25 | 1983-07-02 | Canon Inc | Information transmitting device |
JPH022235B2 (en) * | 1981-12-25 | 1990-01-17 | Canon Kk | |
JPH0262646A (en) * | 1988-08-30 | 1990-03-02 | Nec Corp | Multi-firmware device |
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