JPS6426250A - Memory readout circuit for cpu - Google Patents
Memory readout circuit for cpuInfo
- Publication number
- JPS6426250A JPS6426250A JP18121287A JP18121287A JPS6426250A JP S6426250 A JPS6426250 A JP S6426250A JP 18121287 A JP18121287 A JP 18121287A JP 18121287 A JP18121287 A JP 18121287A JP S6426250 A JPS6426250 A JP S6426250A
- Authority
- JP
- Japan
- Prior art keywords
- cpu
- bits
- memory
- data
- read
- 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
Abstract
PURPOSE:To control memory access to a memory which is smaller than the number of bits of the data bus of a CPU by accessing plural areas corresponding to one memory read from the CPU and reading data consisting of bits as many as the bits of the CPU. CONSTITUTION:The memory 2 has a data bus consisting of bits less than the bits of the data bus of the CPU 1, a read means 20 divides the address space of the memory 2 into plural areas, accesses those areas successively corresponding to one memory read from the CPU 1, and read data consisting of bits as many as the bits of the CPU 1 are provided, and a means 20 sends an end indication 14 to the CPU at the end of a read of the data consisting of bits as many as the bits of the data bus of the CPU 1. Consequently, programs and data are easily read out of the memory 2 consisting of data bits less than the bits of the data bus of the CPU 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18121287A JPS6426250A (en) | 1987-07-22 | 1987-07-22 | Memory readout circuit for cpu |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18121287A JPS6426250A (en) | 1987-07-22 | 1987-07-22 | Memory readout circuit for cpu |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426250A true JPS6426250A (en) | 1989-01-27 |
Family
ID=16096786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18121287A Pending JPS6426250A (en) | 1987-07-22 | 1987-07-22 | Memory readout circuit for cpu |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426250A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0340517A (en) * | 1989-07-06 | 1991-02-21 | Mitsubishi Electric Corp | Driving/protecting circuit for power device |
US6441679B1 (en) | 2000-02-14 | 2002-08-27 | Yazaki Corporation | Semiconductor active fuse operating at higher supply voltage employing current oscillation |
US7221208B2 (en) | 2003-01-16 | 2007-05-22 | Shindengen Electric Manufacturing Co., Ltd. | Switching circuit |
-
1987
- 1987-07-22 JP JP18121287A patent/JPS6426250A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0340517A (en) * | 1989-07-06 | 1991-02-21 | Mitsubishi Electric Corp | Driving/protecting circuit for power device |
US6441679B1 (en) | 2000-02-14 | 2002-08-27 | Yazaki Corporation | Semiconductor active fuse operating at higher supply voltage employing current oscillation |
US7221208B2 (en) | 2003-01-16 | 2007-05-22 | Shindengen Electric Manufacturing Co., Ltd. | Switching circuit |
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